How many institutions own MTSR stock?

A company's 13F filings with the Securities and Exchange Commission (SEC) provides investors with comprehensive information about institutional ownership in a listed company, a sign of strength in terms of how many institutions have confidence in that company. The number of institutional investors who currently own MTSR shares is 156, representing 84.25% of the company's common stock.

Who are the major shareholders selling Metsera, Inc. stock?

ROYCE & ASSOCIATES LP, in the last quarter, reduced its stake in MTSR by -69.12% restricting it's holding to 102.3 thousand shares of worth nearly $5.35M. SOFTBANK GROUP CORP. also lessened -24.17% of the MTSR shares from its portfolio, reducing its holding to 3.65 million shares of worth $191.25M. FMR LLC also shunned MTSR shares holding by -11.84% last quarter which brought its holding to 13.89 million shares worth $726.97M.

Investors who are buying MTSR stock?

As per its latest 13F filing, MORGAN STANLEY increased its stake in MTSR by 45.66% in the last quarter. The institutional holder raised its holding to 92.94 thousand shares having worth more than $4.86M. BARCLAYS PLC also added 294.12% more shares of MTSR to its portfolio, raising its holding to 221.06 thousand shares of worth $11.57M. GEODE CAPITAL MANAGEMENT, LLC also increased its MTSR shares holding by 200.46% which brought its holding to 1.4 million shares worth $73.43M.

MTSR's major insiders: who are they?

The insider with the most stakes in MTSR is FMR LLC , See Remark 1 at the company. Additionally, MTSR stock is highly held by N/A N/A and N/A N/A among others.

Did an insider recently sell MTSR stock?

Company executives, directors, and other insiders own 17.71% percent of Metsera, Inc.'s stock. Within the last six months, there have been 0 transaction(s) in which MTSR insiders have sold stock, totaling 0 shares. Insiders that have sold shares include FMR LLC.

Which insider recently purchased MTSR stock?

There have been 0 transaction(s) during the past 6-months in which Metsera, Inc. insiders have bought stock, totalling 0 shares

How much of MTSR does insiders own?

Around 0 Metsera, Inc. shares are held by insiders, which represents about 17.71% of MTSR stock.

Who is the insider with the largest stake?

MTSR See Remark 1, FMR LLC holds the largest portfolio of the company's shares. MTSR shares owned by FMR total nearly 2.36 million.

Which institution holds the most shares in MTSR?

MORGAN STANLEY is the largest institutional owner in MTSR which holds 92.94 thousand shares worth $4.86M or 0.09% of the total MTSR shares outstanding followed by ENSIGN PEAK ADVISORS, INC with ownership of 107.32 thousand shares representing 0.1% of the MTSR ownership. BARCLAYS PLC is the third largest stakeholder with 221.06 thousand shares or 0.21% of the ownership worth more than $11.57M.

Is Metsera, Inc. stock optionable?

Stock options give the owner the ability but not the obligation to buy or sell a security at a predetermined price and date. Stock options can be classified into two types: puts and calls. A put is a bet on falling stock, and a call is a bet on rising stock. As far as the MTSR is concerned, it is a stock which is optionable.

Is there a short position on MTSR's shares?

Number of MTSR shares short is 4.77M. Shares short is a market sentiment in which investors have sold their shares short in a given stock but have not yet covered them or closed them out.

About how many outstanding MTSR shares are there?

As of today, 105.38M shares of MTSR are outstanding.

Is there many float in MTSR stock?

Float represents the number of tradeable shares in a specific stock. By subtracting restricted and closely-held shares from a firm's total outstanding shares, we can calculate its floating stock. The term "closely-held shares" refers to shares held by employees, major shareholders, and company insiders. At present, MTSR has 64.78M shares in float.

MTSR short ratio: what is it?

Short ratio is calculated by dividing the number of short shares, short interest or bets that shareholders will sell short from the average daily volume. A higher ratio indicates longer times needed to repurchase borrowed shares (sold). The short ratio for MTSR is 2.52.

Metsera (MTSR) insider trading activity: Get Latest News Today

Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableNo

OptionableYes

Short Percent Of Outstanding Shares4.53

Short Percent Of Float9.6

Shares Outstanding105.38M

Shares Float64.78M

Shares Short4.77M

Short Ratio2.52

9.6%

Short % of Float

4.53%

Short % of Shares Outstanding

Market Insider

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

17.71% Percentage of Shares held by All Insiders

84.25% Percentage of Shares held by All Institutions

102.38% Percentage of Float held by Institutions

156

Number of Institutions Holding Shares

Institutional Ownership

About 84.25% of MTSR shares are held by financial institutions. MORGAN STANLEY is the top corporate investor, holding 92.94K shares valued at $4.86M. A 0.09% stake in Metsera, Inc. is owned by the company. ENSIGN PEAK ADVISORS, INC owns 107.32K shares valued at $5.62M, which translates its holding of 0.1% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Sep 30, 2025	MORGAN STANLEY	0.09%	92.94K	4.86M	29.13K	+45.66%
Sep 30, 2025	ENSIGN PEAK ADVISORS, INC	0.1%	107.32K	5.62M	0	0
Sep 30, 2025	BARCLAYS PLC	0.21%	221.06K	11.57M	164.97K	+294.12%
Sep 30, 2025	CORMORANT ASSET MANAGEMENT, LP	0.38%	400K	20.93M	0	0
Sep 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	1.34%	1.4M	73.43M	936.05K	+200.46%
Sep 30, 2025	STATE STREET CORP	2.39%	2.51M	131.4M	1.91M	+318.37%
Sep 30, 2025	JANUS HENDERSON GROUP PLC	5.1%	5.35M	280.08M	1.96M	+57.99%
Sep 30, 2025	NUVEEN, LLC	0.12%	126.11K	6.6M	88.65K	+236.64%
Sep 30, 2025	MAN GROUP PLC	0.13%	140K	7.33M	140K	+100.00%
Sep 30, 2025	HBK INVESTMENTS L P	3.05%	3.2M	167.46M	3.2M	+100.00%
Sep 30, 2025	VANGUARD GROUP INC	5.55%	5.82M	304.82M	4.33M	+290.55%
Sep 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.49%	3.66M	191.5M	232.03K	+6.77%
Sep 30, 2025	ROYCE & ASSOCIATES LP	0.1%	102.3K	5.35M	-228.98K	-69.12%
Sep 30, 2025	RHUMBLINE ADVISERS	0.07%	73.14K	3.83M	47.56K	+185.94%
Sep 30, 2025	GOLDMAN SACHS GROUP INC	0.17%	176.85K	9.25M	137.9K	+354.04%
Sep 30, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.38%	396.16K	20.73M	0	0
Sep 30, 2025	NORTHERN TRUST CORP	0.42%	437.84K	22.91M	302.09K	+222.54%
Sep 30, 2025	SOFTBANK GROUP CORP.	3.48%	3.65M	191.25M	-1.17M	-24.17%
Sep 30, 2025	UBS GROUP AG	0.13%	140.92K	7.37M	94.66K	+204.58%
Sep 30, 2025	ADAR1 CAPITAL MANAGEMENT, LLC	0.15%	152.52K	7.98M	152.52K	+100.00%
Sep 30, 2025	BANK OF NEW YORK MELLON CORP	0.16%	163.73K	8.57M	124.21K	+314.28%
Sep 30, 2025	ALPINE ASSOCIATES MANAGEMENT INC.	0.19%	195.2K	10.21M	195.2K	+100.00%
Sep 30, 2025	WEALTHSPIRE ADVISORS, LLC	0.2%	213.09K	11.15M	213.09K	+100.00%
Sep 30, 2025	GREENWICH WEALTH MANAGEMENT LLC	0.09%	93.22K	4.88M	93.22K	+100.00%
Sep 30, 2025	HUDSON BAY CAPITAL MANAGEMENT LP	0.31%	323.84K	16.95M	323.84K	+100.00%
Sep 30, 2025	JPMORGAN CHASE & CO	0.31%	325.18K	17.02M	309.75K	+2,008.12%
Sep 30, 2025	WOODLINE PARTNERS LP	0.38%	400.79K	20.97M	0	0
Sep 30, 2025	BLACKROCK, INC.	3.66%	3.84M	200.7M	2.6M	+210.02%
Sep 30, 2025	FMR LLC	13.25%	13.89M	726.97M	-1.87M	-11.84%
Sep 30, 2025	ARIZONA STATE RETIREMENT SYSTEM	0.01%	6.21K	324.71K	6.21K	+100.00%
Sep 30, 2025	WELLS FARGO & COMPANY/MN	0.06%	59.07K	3.09M	42.04K	+246.82%
Sep 30, 2025	TIG ADVISORS, LLC	0.06%	58.35K	3.05M	58.35K	+100.00%
Sep 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	0.05%	54.33K	2.84M	-1.31M	-96.03%
Sep 30, 2025	CITIGROUP INC	0.05%	54.24K	2.84M	43.29K	+395.17%
Sep 30, 2025	AMERICAN CENTURY COMPANIES INC	0.27%	286.45K	14.99M	-1.23K	-0.43%
Sep 30, 2025	BANK OF AMERICA CORP /DE/	0.43%	455.61K	23.84M	404.93K	+799.04%
Sep 30, 2025	RA CAPITAL MANAGEMENT, L.P.	0.64%	675.53K	35.35M	0	0
Sep 30, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	2.22%	2.33M	121.79M	-677.5K	-22.55%
Sep 30, 2025	SCS CAPITAL MANAGEMENT LLC	0.09%	89.38K	4.68M	89.38K	+100.00%
Sep 30, 2025	RAFFERTY ASSET MANAGEMENT, LLC	0.1%	103.47K	5.41M	84.17K	+436.31%
Sep 30, 2025	MILLENNIUM MANAGEMENT LLC	0.11%	120.36K	6.3M	120.36K	+100.00%
Sep 30, 2025	AVIDITY PARTNERS MANAGEMENT LP	0.13%	140.5K	7.35M	140.5K	+100.00%
Sep 30, 2025	VERITION FUND MANAGEMENT LLC	0.07%	70.93K	3.71M	59.27K	+508.51%
Sep 30, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.07%	76.39K	4M	76.39K	+100.00%
Sep 30, 2025	TD ASSET MANAGEMENT INC	0.06%	67.73K	3.54M	30.9K	+83.89%
Sep 30, 2025	ALPS ADVISORS INC	0.05%	49.94K	2.61M	-6.72K	-11.86%
Sep 30, 2025	SWISS NATIONAL BANK	0.04%	40.7K	2.13M	600	+1.50%
Sep 30, 2025	VESTCOR INC	0.04%	40K	2.09M	40K	+100.00%
Sep 30, 2025	DEUTSCHE BANK AG\	0.04%	38.93K	2.04M	27.04K	+227.55%
Sep 30, 2025	INVESCO LTD.	0.03%	31.68K	1.66M	19.7K	+164.54%
Sep 30, 2025	METLIFE INVESTMENT MANAGEMENT, LLC	0.03%	31.32K	1.64M	20.47K	+188.59%
Sep 30, 2025	STIFEL FINANCIAL CORP	0.03%	29.96K	1.57M	29.96K	+100.00%
Sep 30, 2025	FIRST TRUST ADVISORS LP	0.03%	27.69K	1.45M	27.69K	+100.00%
Sep 30, 2025	EXCHANGE TRADED CONCEPTS, LLC	0.02%	25.61K	1.34M	-14.92K	-36.82%
Sep 30, 2025	SG AMERICAS SECURITIES, LLC	0.02%	23.61K	1.24M	-24.05K	-50.46%
Sep 30, 2025	LEGAL & GENERAL GROUP PLC	0.02%	23.49K	1.23M	245	+1.05%
Sep 30, 2025	PROFUND ADVISORS LLC	0.02%	22.32K	1.17M	22.32K	+100.00%
Sep 30, 2025	QUINN OPPORTUNITY PARTNERS LLC	0.02%	17.95K	939.38K	17.95K	+100.00%
Sep 30, 2025	GABELLI FUNDS LLC	0.01%	15K	784.95K	15K	+100.00%
Sep 30, 2025	POLICE & FIREMEN'S RETIREMENT SYSTEM OF NEW JERSEY	0.01%	14.64K	766.11K	10.35K	+241.02%
Sep 30, 2025	PROSHARE ADVISORS LLC	0.01%	14.41K	754.23K	14.41K	+100.00%
Sep 30, 2025	CSS LLC/IL	0.01%	13.53K	708.08K	13.53K	+100.00%
Sep 30, 2025	BNP PARIBAS ARBITRAGE, SNC	0.01%	10.86K	568.25K	9.26K	+578.69%
Sep 30, 2025	DIMENSIONAL FUND ADVISORS LP	0.01%	10.77K	563.59K	10.77K	+100.00%
Sep 30, 2025	HAMILTON LANE ADVISORS LLC	0.01%	9.81K	513.36K	9.81K	+100.00%
Sep 30, 2025	VOYA INVESTMENT MANAGEMENT LLC	0.01%	9.49K	496.82K	9.49K	+100.00%
Sep 30, 2025	SIMPLEX TRADING, LLC	0.01%	9.11K	476K	3.32K	+57.19%
Sep 30, 2025	FIFTH LANE CAPITAL, LP	0.01%	8.33K	436.07K	8.33K	+100.00%
Sep 30, 2025	PRUDENTIAL FINANCIAL INC	0.01%	6.84K	357.68K	-9.24K	-57.47%
Sep 30, 2025	IKARIAN CAPITAL, LLC	0.08%	86K	4.5M	86K	+100.00%
Sep 30, 2025	BALYASNY ASSET MANAGEMENT L.P.	0.17%	177.23K	9.27M	177.23K	+100.00%
Sep 30, 2025	GLAZER CAPITAL, LLC	0.26%	270.66K	14.16M	270.66K	+100.00%
Sep 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.16%	168.48K	8.82M	147.19K	+691.42%
Sep 30, 2025	VR ADVISER, LLC	3.58%	3.75M	196.27M	0	0
Sep 30, 2025	JANE STREET GROUP, LLC	0.11%	118.5K	6.2M	118.5K	+100.00%
Sep 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.49%	511.47K	26.76M	375.06K	+274.96%
Sep 30, 2025	ALPHA WAVE GLOBAL, LP	2.27%	2.38M	124.76M	0	0
Sep 30, 2025	ECOR1 CAPITAL, LLC	0.26%	271.53K	14.21M	0	0
Sep 30, 2025	ALPHABET INC.	3.61%	3.78M	197.99M	-1.18M	-23.75%
Jun 30, 2025	NUVEEN, LLC	0.04%	37.46K	1.07M	17.15K	+84.39%
Jun 30, 2025	SOFTBANK GROUP CORP.	4.6%	4.82M	137.13M	4.82M	+100.00%
Jun 30, 2025	MIC CAPITAL MANAGEMENT UK LLP	4.33%	4.54M	129.15M	0	0
Jun 30, 2025	VR ADVISER, LLC	3.58%	3.75M	106.71M	0	0
Jun 30, 2025	BLACKROCK, INC.	1.18%	1.24M	35.2M	-577.23K	-31.81%
Jun 30, 2025	DEEP TRACK CAPITAL, LP	1.04%	1.09M	31.14M	0	0
Jun 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.04%	40.7K	1.16M	40.7K	+100.00%
Jun 30, 2025	EXCHANGE TRADED CONCEPTS, LLC	0.04%	40.53K	1.15M	40.53K	+100.00%
Jun 30, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	2.87%	3M	85.49M	111.84K	+3.87%
Jun 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	1.3%	1.37M	38.94M	-188.91K	-12.13%
Jun 30, 2025	RA CAPITAL MANAGEMENT, L.P.	0.64%	675.53K	19.22M	0	0
Jun 30, 2025	STATE STREET CORP	0.57%	600.2K	17.08M	351.56K	+141.39%
Jun 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.45%	466.96K	13.29M	32.31K	+7.43%
Jun 30, 2025	JENNISON ASSOCIATES LLC	0.3%	312.29K	8.88M	-43.28K	-12.17%
Jun 30, 2025	AMERICAN CENTURY COMPANIES INC	0.27%	287.67K	8.18M	1.47K	+0.51%
Jun 30, 2025	ECOR1 CAPITAL, LLC	0.26%	271.53K	7.73M	221.53K	+443.06%
Jun 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.13%	136.41K	3.88M	11.12K	+8.88%
Jun 30, 2025	FMR LLC	15.03%	15.76M	448.32M	590.52K	+3.89%
Jun 30, 2025	ALPHABET INC.	4.73%	4.96M	141.16M	0	0
Jun 30, 2025	LOGOS GLOBAL MANAGEMENT LP	0.19%	200K	5.69M	200K	+100.00%
Jun 30, 2025	ENSIGN PEAK ADVISORS, INC	0.1%	107.32K	3.05M	107.32K	+100.00%
Jun 30, 2025	TANG CAPITAL MANAGEMENT LLC	0.1%	100K	2.85M	100K	+100.00%
Jun 30, 2025	IKARIAN CAPITAL, LLC	0.07%	77.32K	2.2M	-72.68K	-48.46%
Jun 30, 2025	ALPS ADVISORS INC	0.05%	56.67K	1.61M	56.67K	+100.00%
Jun 30, 2025	ALYESKA INVESTMENT GROUP, L.P.	0.05%	55K	1.56M	55K	+100.00%
Jun 30, 2025	TD ASSET MANAGEMENT INC	0.04%	36.83K	1.05M	-39.99K	-52.06%
Jun 30, 2025	SOFINNOVA INVESTMENTS, INC.	0.03%	36.19K	1.03M	-609	-1.65%
Jun 30, 2025	SCHRODER INVESTMENT MANAGEMENT GROUP	0.02%	25.58K	727.69K	25.58K	+100.00%
Jun 30, 2025	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	0.02%	24.01K	682.94M	22.87K	+2,007.55%
Jun 30, 2025	BOOTHBAY FUND MANAGEMENT, LLC	0.02%	23.35K	664.22K	-24.76K	-51.47%
Jun 30, 2025	RAFFERTY ASSET MANAGEMENT, LLC	0.02%	19.29K	548.86K	19.29K	+100.00%
Jun 30, 2025	INTECH INVESTMENT MANAGEMENT LLC	0.01%	14.06K	400.01K	14.06K	+100.00%
Jun 30, 2025	CI PRIVATE WEALTH, LLC	0.01%	13.11K	373.09K	13.11K	+100.00%
Jun 30, 2025	VERITION FUND MANAGEMENT LLC	0.01%	11.66K	331.61K	11.66K	+100.00%
Jun 30, 2025	MIRAE ASSET GLOBAL ETFS HOLDINGS LTD.	0.01%	10.67K	303.55K	1.54K	+16.86%
Jun 30, 2025	ATOM INVESTORS LP	0.01%	10.25K	291.61K	10.25K	+100.00%
Jun 30, 2025	CANTOR FITZGERALD, L. P.	0.01%	10.2K	290.19K	10.2K	+100.00%
Jun 30, 2025	BELLEVUE GROUP AG	0.01%	7.8K	221.91K	7.8K	+100.00%
Jun 30, 2025	WEXFORD CAPITAL LP	0.01%	5.63K	160.26K	5.63K	+100.00%
Jun 30, 2025	VIRTUS INVESTMENT ADVISERS, INC.	0%	2.72K	77.36K	2.72K	+100.00%
Jun 30, 2025	BNP PARIBAS ARBITRAGE, SNC	0%	1.6K	45.52M	800	+100.00%
Jun 30, 2025	ROYAL BANK OF CANADA	0%	383	11K	312	+439.44%
Jun 30, 2025	GAMMA INVESTING LLC	0%	381	10.84K	381	+100.00%
Jun 30, 2025	MORGAN STANLEY	0.06%	63.81K	1.82M	18.34K	+40.33%
Jun 30, 2025	SWISS NATIONAL BANK	0.04%	40.1K	1.14M	40.1K	+100.00%
Jun 30, 2025	BANK OF NEW YORK MELLON CORP	0.04%	39.52K	1.12M	7.03K	+21.63%
Jun 30, 2025	WOODLINE PARTNERS LP	0.38%	400.79K	11.4M	100.57K	+33.50%
Jun 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.27%	3.43M	97.51M	1.03M	+42.69%
Jun 30, 2025	JANUS HENDERSON GROUP PLC	3.23%	3.39M	96.4M	482.5K	+16.61%
Jun 30, 2025	ALPHA WAVE GLOBAL, LP	2.27%	2.38M	67.83M	0	0
Jun 30, 2025	VIKING GLOBAL INVESTORS LP	1.54%	1.62M	45.99M	0	0
Jun 30, 2025	VANGUARD GROUP INC	1.42%	1.49M	42.43M	24.47K	+1.67%
Jun 30, 2025	ALLIANCEBERNSTEIN L.P.	1.36%	1.42M	40.44M	218.41K	+18.16%
Jun 30, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.38%	396.16K	11.27M	146.16K	+58.46%
Jun 30, 2025	ROYCE & ASSOCIATES LP	0.32%	331.28K	9.42M	331.28K	+100.00%
Jun 30, 2025	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0.24%	253.71K	7.22M	-227.97K	-47.33%
Jun 30, 2025	CITADEL ADVISORS LLC	0.22%	230.82K	6.57M	182.32K	+375.96%
Jun 30, 2025	SILVERARC CAPITAL MANAGEMENT, LLC	0.2%	207.58K	5.91M	94.82K	+84.09%
Jun 30, 2025	NORTHERN TRUST CORP	0.13%	135.75K	3.86M	13.43K	+10.98%
Jun 30, 2025	AXA S.A.	0.11%	114.41K	3.25M	114.41K	+100.00%
Jun 30, 2025	BARCLAYS PLC	0.05%	56.09K	1.6M	36.2K	+182.03%
Jun 30, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.05%	55.23K	1.57M	47.08K	+577.36%
Jun 30, 2025	BANK OF AMERICA CORP /DE/	0.05%	50.68K	1.44M	40.07K	+377.81%
Jun 30, 2025	SG AMERICAS SECURITIES, LLC	0.05%	47.66K	1.36M	43.02K	+925.69%
Jun 30, 2025	UBS GROUP AG	0.04%	46.27K	1.32M	-59.01K	-56.05%
Jun 30, 2025	GOLDMAN SACHS GROUP INC	0.04%	38.95K	1.11M	18.09K	+86.76%
Jun 30, 2025		0.04%	37.46K	1.07M	17.15K	+84.39%
Jun 30, 2025	UBS ASSET MANAGEMENT AMERICAS INC	0.05%	53.09K	1.51M	53.09K	+100.00%
Jun 30, 2025	CORMORANT ASSET MANAGEMENT, LP	0.38%	400K	11.38M	0	0
Mar 31, 2025	ALPHA WAVE GLOBAL, LP	3.2%	2.38M	64.89M	2.38M	+100.00%
Mar 31, 2025	RHUMBLINE ADVISERS	0.03%	19.11K	520.03K	19.11K	+100.00%
Mar 31, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.03%	19.11K	520.23K	19.11K	+100.00%
Mar 31, 2025	BARCLAYS PLC	0.03%	19.89K	541K	19.89K	+100.00%
Mar 31, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.23%	2.4M	65.38M	2.4M	+100.00%
Mar 31, 2025	JANUS HENDERSON GROUP PLC	3.91%	2.91M	81.34M	2.91M	+100.00%
Mar 31, 2025	VR ADVISER, LLC	5.04%	3.75M	102.09M	3.75M	+100.00%
Mar 31, 2025	BOOTHBAY FUND MANAGEMENT, LLC	0.06%	48.11K	1.31M	48.11K	+100.00%
Mar 31, 2025	UBS GROUP AG	0.14%	105.28K	2.87M	105.28K	+100.00%
Mar 31, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.17%	125.28K	3.41M	125.28K	+100.00%
Mar 31, 2025	IKARIAN CAPITAL, LLC	0.2%	150K	4.08M	150K	+100.00%
Mar 31, 2025	BRAIDWELL LP	0.24%	175K	4.76M	175K	+100.00%
Mar 31, 2025	AMERICAN CENTURY COMPANIES INC	0.38%	286.21K	7.79M	286.21K	+100.00%
Mar 31, 2025	WOODLINE PARTNERS LP	0.4%	300.22K	8.17M	300.22K	+100.00%
Mar 31, 2025	CORMORANT ASSET MANAGEMENT, LP	0.54%	400K	10.89M	400K	+100.00%
Mar 31, 2025	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	0.67%	500K	13.61M	500K	+100.00%
Mar 31, 2025	ALLIANCEBERNSTEIN L.P.	1.62%	1.2M	32.74M	1.2M	+100.00%
Mar 31, 2025	VIKING GLOBAL INVESTORS LP	2.17%	1.62M	44M	1.62M	+100.00%
Mar 31, 2025	BLACKROCK, INC.	2.44%	1.81M	49.39M	1.81M	+100.00%
Mar 31, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	3.89%	2.89M	78.75M	2.89M	+100.00%
Mar 31, 2025	ALPHABET INC.	6.67%	4.96M	135.06M	4.96M	+100.00%
Mar 31, 2025	FMR LLC	20.39%	15.17M	412.87M	15.17M	+100.00%
Mar 31, 2025	SILVERARC CAPITAL MANAGEMENT, LLC	0.15%	112.76K	3.07M	112.76K	+100.00%
Mar 31, 2025	NORTHERN TRUST CORP	0.16%	122.32K	3.33M	122.32K	+100.00%
Mar 31, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.58%	434.65K	11.83M	434.65K	+100.00%
Mar 31, 2025	RA CAPITAL MANAGEMENT, L.P.	0.91%	675.53K	18.39M	675.53K	+100.00%
Mar 31, 2025	CITADEL ADVISORS LLC	0.07%	48.5K	1.32M	48.5K	+100.00%
Mar 31, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.03%	21.4K	582.37K	21.4K	+100.00%
Mar 31, 2025	BANK OF NEW YORK MELLON CORP	0.04%	32.49K	884.49K	32.49K	+100.00%
Mar 31, 2025		0.03%	20.32K	553.03K	20.32K	+100.00%
Mar 31, 2025	GOLDMAN SACHS GROUP INC	0.03%	20.86K	567.7K	20.86K	+100.00%
Mar 31, 2025	SOFINNOVA INVESTMENTS, INC.	0.05%	36.8K	1M	36.8K	+100.00%
Mar 31, 2025	MORGAN STANLEY	0.06%	45.47K	1.24M	45.47K	+100.00%
Mar 31, 2025	INVESCO LTD.	0.01%	9.97K	271.49K	9.97K	+100.00%
Mar 31, 2025	AMERIPRISE FINANCIAL INC	0.01%	10.02K	272.8K	10.02K	+100.00%
Mar 31, 2025	BANK OF AMERICA CORP /DE/	0.01%	10.61K	288.7K	10.61K	+100.00%
Mar 31, 2025	STATE STREET CORP	0.33%	248.65K	6.77M	248.65K	+100.00%
Mar 31, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.34%	250K	6.81M	250K	+100.00%
Mar 31, 2025	JENNISON ASSOCIATES LLC	0.48%	355.57K	9.68M	355.57K	+100.00%
Mar 31, 2025	VANGUARD GROUP INC	1.97%	1.47M	39.93M	1.47M	+100.00%
Mar 31, 2025	CITIGROUP INC	0.01%	10.85K	295.37K	10.85K	+100.00%
Mar 31, 2025	DEUTSCHE BANK AG\	0.02%	13.74K	374K	13.74K	+100.00%
Mar 31, 2025	TD ASSET MANAGEMENT INC	0.1%	76.82K	2.09M	76.82K	+100.00%
Mar 31, 2025	SIREN, L.L.C.	0.2%	150K	4.08M	150K	+100.00%
Mar 31, 2025	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0.65%	481.68K	13.11M	481.68K	+100.00%
Mar 31, 2025	DEEP TRACK CAPITAL, LP	1.47%	1.09M	29.79M	1.09M	+100.00%
Mar 31, 2025	PARADIGM BIOCAPITAL ADVISORS LP	1.6%	1.19M	32.43M	1.19M	+100.00%
Mar 31, 2025	PRICE T ROWE ASSOCIATES INC /MD/	2.09%	1.56M	42.4M	1.56M	+100.00%
Mar 31, 2025	PRUDENTIAL FINANCIAL INC	0.02%	14.9K	405.58K	14.9K	+100.00%
Mar 31, 2025	MILLENNIUM MANAGEMENT LLC	0.1%	73.7K	2.01M	73.7K	+100.00%

Insiders

Among the MTSR insiders holding of 17.71% of the stake in company, FMR LLC, See Remark 1, holds the largest shares of 2.36M. , , is the second largest MTSR insider with ownership of - shares. , , stands third with possession of - shares of that stake.

Insiders	Designation	Shares Held
FMR LLC	See Remark 1	2.36M

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Nov 03, 2025	FMR LLC	SALE	61.23	193	11.82K	2.36M
Sep 02, 2025	FMR LLC	SALE	36.00	268	9.65K	0

Frequently Asked Questions

Stock Outstanding Shares

ShortableNo

OptionableYes

Short Percent Of Outstanding Shares4.53

Short Percent Of Float9.6

Shares Outstanding105.38M

Shares Float64.78M

Shares Short4.77M

Short Ratio2.52

9.6%

Short % of Float

4.53%

Short % of Shares Outstanding

Market Insider

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

17.71% Percentage of Shares held by All Insiders

84.25% Percentage of Shares held by All Institutions

102.38% Percentage of Float held by Institutions

156

Number of Institutions Holding Shares

Institutional Ownership

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Sep 30, 2025	MORGAN STANLEY	0.09%	92.94K	4.86M	29.13K	+45.66%
Sep 30, 2025	ENSIGN PEAK ADVISORS, INC	0.1%	107.32K	5.62M	0	0
Sep 30, 2025	BARCLAYS PLC	0.21%	221.06K	11.57M	164.97K	+294.12%
Sep 30, 2025	CORMORANT ASSET MANAGEMENT, LP	0.38%	400K	20.93M	0	0
Sep 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	1.34%	1.4M	73.43M	936.05K	+200.46%
Sep 30, 2025	STATE STREET CORP	2.39%	2.51M	131.4M	1.91M	+318.37%
Sep 30, 2025	JANUS HENDERSON GROUP PLC	5.1%	5.35M	280.08M	1.96M	+57.99%
Sep 30, 2025	NUVEEN, LLC	0.12%	126.11K	6.6M	88.65K	+236.64%
Sep 30, 2025	MAN GROUP PLC	0.13%	140K	7.33M	140K	+100.00%
Sep 30, 2025	HBK INVESTMENTS L P	3.05%	3.2M	167.46M	3.2M	+100.00%
Sep 30, 2025	VANGUARD GROUP INC	5.55%	5.82M	304.82M	4.33M	+290.55%
Sep 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.49%	3.66M	191.5M	232.03K	+6.77%
Sep 30, 2025	ROYCE & ASSOCIATES LP	0.1%	102.3K	5.35M	-228.98K	-69.12%
Sep 30, 2025	RHUMBLINE ADVISERS	0.07%	73.14K	3.83M	47.56K	+185.94%
Sep 30, 2025	GOLDMAN SACHS GROUP INC	0.17%	176.85K	9.25M	137.9K	+354.04%
Sep 30, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.38%	396.16K	20.73M	0	0
Sep 30, 2025	NORTHERN TRUST CORP	0.42%	437.84K	22.91M	302.09K	+222.54%
Sep 30, 2025	SOFTBANK GROUP CORP.	3.48%	3.65M	191.25M	-1.17M	-24.17%
Sep 30, 2025	UBS GROUP AG	0.13%	140.92K	7.37M	94.66K	+204.58%
Sep 30, 2025	ADAR1 CAPITAL MANAGEMENT, LLC	0.15%	152.52K	7.98M	152.52K	+100.00%
Sep 30, 2025	BANK OF NEW YORK MELLON CORP	0.16%	163.73K	8.57M	124.21K	+314.28%
Sep 30, 2025	ALPINE ASSOCIATES MANAGEMENT INC.	0.19%	195.2K	10.21M	195.2K	+100.00%
Sep 30, 2025	WEALTHSPIRE ADVISORS, LLC	0.2%	213.09K	11.15M	213.09K	+100.00%
Sep 30, 2025	GREENWICH WEALTH MANAGEMENT LLC	0.09%	93.22K	4.88M	93.22K	+100.00%
Sep 30, 2025	HUDSON BAY CAPITAL MANAGEMENT LP	0.31%	323.84K	16.95M	323.84K	+100.00%
Sep 30, 2025	JPMORGAN CHASE & CO	0.31%	325.18K	17.02M	309.75K	+2,008.12%
Sep 30, 2025	WOODLINE PARTNERS LP	0.38%	400.79K	20.97M	0	0
Sep 30, 2025	BLACKROCK, INC.	3.66%	3.84M	200.7M	2.6M	+210.02%
Sep 30, 2025	FMR LLC	13.25%	13.89M	726.97M	-1.87M	-11.84%
Sep 30, 2025	ARIZONA STATE RETIREMENT SYSTEM	0.01%	6.21K	324.71K	6.21K	+100.00%
Sep 30, 2025	WELLS FARGO & COMPANY/MN	0.06%	59.07K	3.09M	42.04K	+246.82%
Sep 30, 2025	TIG ADVISORS, LLC	0.06%	58.35K	3.05M	58.35K	+100.00%
Sep 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	0.05%	54.33K	2.84M	-1.31M	-96.03%
Sep 30, 2025	CITIGROUP INC	0.05%	54.24K	2.84M	43.29K	+395.17%
Sep 30, 2025	AMERICAN CENTURY COMPANIES INC	0.27%	286.45K	14.99M	-1.23K	-0.43%
Sep 30, 2025	BANK OF AMERICA CORP /DE/	0.43%	455.61K	23.84M	404.93K	+799.04%
Sep 30, 2025	RA CAPITAL MANAGEMENT, L.P.	0.64%	675.53K	35.35M	0	0
Sep 30, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	2.22%	2.33M	121.79M	-677.5K	-22.55%
Sep 30, 2025	SCS CAPITAL MANAGEMENT LLC	0.09%	89.38K	4.68M	89.38K	+100.00%
Sep 30, 2025	RAFFERTY ASSET MANAGEMENT, LLC	0.1%	103.47K	5.41M	84.17K	+436.31%
Sep 30, 2025	MILLENNIUM MANAGEMENT LLC	0.11%	120.36K	6.3M	120.36K	+100.00%
Sep 30, 2025	AVIDITY PARTNERS MANAGEMENT LP	0.13%	140.5K	7.35M	140.5K	+100.00%
Sep 30, 2025	VERITION FUND MANAGEMENT LLC	0.07%	70.93K	3.71M	59.27K	+508.51%
Sep 30, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.07%	76.39K	4M	76.39K	+100.00%
Sep 30, 2025	TD ASSET MANAGEMENT INC	0.06%	67.73K	3.54M	30.9K	+83.89%
Sep 30, 2025	ALPS ADVISORS INC	0.05%	49.94K	2.61M	-6.72K	-11.86%
Sep 30, 2025	SWISS NATIONAL BANK	0.04%	40.7K	2.13M	600	+1.50%
Sep 30, 2025	VESTCOR INC	0.04%	40K	2.09M	40K	+100.00%
Sep 30, 2025	DEUTSCHE BANK AG\	0.04%	38.93K	2.04M	27.04K	+227.55%
Sep 30, 2025	INVESCO LTD.	0.03%	31.68K	1.66M	19.7K	+164.54%
Sep 30, 2025	METLIFE INVESTMENT MANAGEMENT, LLC	0.03%	31.32K	1.64M	20.47K	+188.59%
Sep 30, 2025	STIFEL FINANCIAL CORP	0.03%	29.96K	1.57M	29.96K	+100.00%
Sep 30, 2025	FIRST TRUST ADVISORS LP	0.03%	27.69K	1.45M	27.69K	+100.00%
Sep 30, 2025	EXCHANGE TRADED CONCEPTS, LLC	0.02%	25.61K	1.34M	-14.92K	-36.82%
Sep 30, 2025	SG AMERICAS SECURITIES, LLC	0.02%	23.61K	1.24M	-24.05K	-50.46%
Sep 30, 2025	LEGAL & GENERAL GROUP PLC	0.02%	23.49K	1.23M	245	+1.05%
Sep 30, 2025	PROFUND ADVISORS LLC	0.02%	22.32K	1.17M	22.32K	+100.00%
Sep 30, 2025	QUINN OPPORTUNITY PARTNERS LLC	0.02%	17.95K	939.38K	17.95K	+100.00%
Sep 30, 2025	GABELLI FUNDS LLC	0.01%	15K	784.95K	15K	+100.00%
Sep 30, 2025	POLICE & FIREMEN'S RETIREMENT SYSTEM OF NEW JERSEY	0.01%	14.64K	766.11K	10.35K	+241.02%
Sep 30, 2025	PROSHARE ADVISORS LLC	0.01%	14.41K	754.23K	14.41K	+100.00%
Sep 30, 2025	CSS LLC/IL	0.01%	13.53K	708.08K	13.53K	+100.00%
Sep 30, 2025	BNP PARIBAS ARBITRAGE, SNC	0.01%	10.86K	568.25K	9.26K	+578.69%
Sep 30, 2025	DIMENSIONAL FUND ADVISORS LP	0.01%	10.77K	563.59K	10.77K	+100.00%
Sep 30, 2025	HAMILTON LANE ADVISORS LLC	0.01%	9.81K	513.36K	9.81K	+100.00%
Sep 30, 2025	VOYA INVESTMENT MANAGEMENT LLC	0.01%	9.49K	496.82K	9.49K	+100.00%
Sep 30, 2025	SIMPLEX TRADING, LLC	0.01%	9.11K	476K	3.32K	+57.19%
Sep 30, 2025	FIFTH LANE CAPITAL, LP	0.01%	8.33K	436.07K	8.33K	+100.00%
Sep 30, 2025	PRUDENTIAL FINANCIAL INC	0.01%	6.84K	357.68K	-9.24K	-57.47%
Sep 30, 2025	IKARIAN CAPITAL, LLC	0.08%	86K	4.5M	86K	+100.00%
Sep 30, 2025	BALYASNY ASSET MANAGEMENT L.P.	0.17%	177.23K	9.27M	177.23K	+100.00%
Sep 30, 2025	GLAZER CAPITAL, LLC	0.26%	270.66K	14.16M	270.66K	+100.00%
Sep 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.16%	168.48K	8.82M	147.19K	+691.42%
Sep 30, 2025	VR ADVISER, LLC	3.58%	3.75M	196.27M	0	0
Sep 30, 2025	JANE STREET GROUP, LLC	0.11%	118.5K	6.2M	118.5K	+100.00%
Sep 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.49%	511.47K	26.76M	375.06K	+274.96%
Sep 30, 2025	ALPHA WAVE GLOBAL, LP	2.27%	2.38M	124.76M	0	0
Sep 30, 2025	ECOR1 CAPITAL, LLC	0.26%	271.53K	14.21M	0	0
Sep 30, 2025	ALPHABET INC.	3.61%	3.78M	197.99M	-1.18M	-23.75%
Jun 30, 2025	NUVEEN, LLC	0.04%	37.46K	1.07M	17.15K	+84.39%
Jun 30, 2025	SOFTBANK GROUP CORP.	4.6%	4.82M	137.13M	4.82M	+100.00%
Jun 30, 2025	MIC CAPITAL MANAGEMENT UK LLP	4.33%	4.54M	129.15M	0	0
Jun 30, 2025	VR ADVISER, LLC	3.58%	3.75M	106.71M	0	0
Jun 30, 2025	BLACKROCK, INC.	1.18%	1.24M	35.2M	-577.23K	-31.81%
Jun 30, 2025	DEEP TRACK CAPITAL, LP	1.04%	1.09M	31.14M	0	0
Jun 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.04%	40.7K	1.16M	40.7K	+100.00%
Jun 30, 2025	EXCHANGE TRADED CONCEPTS, LLC	0.04%	40.53K	1.15M	40.53K	+100.00%
Jun 30, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	2.87%	3M	85.49M	111.84K	+3.87%
Jun 30, 2025	PRICE T ROWE ASSOCIATES INC /MD/	1.3%	1.37M	38.94M	-188.91K	-12.13%
Jun 30, 2025	RA CAPITAL MANAGEMENT, L.P.	0.64%	675.53K	19.22M	0	0
Jun 30, 2025	STATE STREET CORP	0.57%	600.2K	17.08M	351.56K	+141.39%
Jun 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.45%	466.96K	13.29M	32.31K	+7.43%
Jun 30, 2025	JENNISON ASSOCIATES LLC	0.3%	312.29K	8.88M	-43.28K	-12.17%
Jun 30, 2025	AMERICAN CENTURY COMPANIES INC	0.27%	287.67K	8.18M	1.47K	+0.51%
Jun 30, 2025	ECOR1 CAPITAL, LLC	0.26%	271.53K	7.73M	221.53K	+443.06%
Jun 30, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.13%	136.41K	3.88M	11.12K	+8.88%
Jun 30, 2025	FMR LLC	15.03%	15.76M	448.32M	590.52K	+3.89%
Jun 30, 2025	ALPHABET INC.	4.73%	4.96M	141.16M	0	0
Jun 30, 2025	LOGOS GLOBAL MANAGEMENT LP	0.19%	200K	5.69M	200K	+100.00%
Jun 30, 2025	ENSIGN PEAK ADVISORS, INC	0.1%	107.32K	3.05M	107.32K	+100.00%
Jun 30, 2025	TANG CAPITAL MANAGEMENT LLC	0.1%	100K	2.85M	100K	+100.00%
Jun 30, 2025	IKARIAN CAPITAL, LLC	0.07%	77.32K	2.2M	-72.68K	-48.46%
Jun 30, 2025	ALPS ADVISORS INC	0.05%	56.67K	1.61M	56.67K	+100.00%
Jun 30, 2025	ALYESKA INVESTMENT GROUP, L.P.	0.05%	55K	1.56M	55K	+100.00%
Jun 30, 2025	TD ASSET MANAGEMENT INC	0.04%	36.83K	1.05M	-39.99K	-52.06%
Jun 30, 2025	SOFINNOVA INVESTMENTS, INC.	0.03%	36.19K	1.03M	-609	-1.65%
Jun 30, 2025	SCHRODER INVESTMENT MANAGEMENT GROUP	0.02%	25.58K	727.69K	25.58K	+100.00%
Jun 30, 2025	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	0.02%	24.01K	682.94M	22.87K	+2,007.55%
Jun 30, 2025	BOOTHBAY FUND MANAGEMENT, LLC	0.02%	23.35K	664.22K	-24.76K	-51.47%
Jun 30, 2025	RAFFERTY ASSET MANAGEMENT, LLC	0.02%	19.29K	548.86K	19.29K	+100.00%
Jun 30, 2025	INTECH INVESTMENT MANAGEMENT LLC	0.01%	14.06K	400.01K	14.06K	+100.00%
Jun 30, 2025	CI PRIVATE WEALTH, LLC	0.01%	13.11K	373.09K	13.11K	+100.00%
Jun 30, 2025	VERITION FUND MANAGEMENT LLC	0.01%	11.66K	331.61K	11.66K	+100.00%
Jun 30, 2025	MIRAE ASSET GLOBAL ETFS HOLDINGS LTD.	0.01%	10.67K	303.55K	1.54K	+16.86%
Jun 30, 2025	ATOM INVESTORS LP	0.01%	10.25K	291.61K	10.25K	+100.00%
Jun 30, 2025	CANTOR FITZGERALD, L. P.	0.01%	10.2K	290.19K	10.2K	+100.00%
Jun 30, 2025	BELLEVUE GROUP AG	0.01%	7.8K	221.91K	7.8K	+100.00%
Jun 30, 2025	WEXFORD CAPITAL LP	0.01%	5.63K	160.26K	5.63K	+100.00%
Jun 30, 2025	VIRTUS INVESTMENT ADVISERS, INC.	0%	2.72K	77.36K	2.72K	+100.00%
Jun 30, 2025	BNP PARIBAS ARBITRAGE, SNC	0%	1.6K	45.52M	800	+100.00%
Jun 30, 2025	ROYAL BANK OF CANADA	0%	383	11K	312	+439.44%
Jun 30, 2025	GAMMA INVESTING LLC	0%	381	10.84K	381	+100.00%
Jun 30, 2025	MORGAN STANLEY	0.06%	63.81K	1.82M	18.34K	+40.33%
Jun 30, 2025	SWISS NATIONAL BANK	0.04%	40.1K	1.14M	40.1K	+100.00%
Jun 30, 2025	BANK OF NEW YORK MELLON CORP	0.04%	39.52K	1.12M	7.03K	+21.63%
Jun 30, 2025	WOODLINE PARTNERS LP	0.38%	400.79K	11.4M	100.57K	+33.50%
Jun 30, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.27%	3.43M	97.51M	1.03M	+42.69%
Jun 30, 2025	JANUS HENDERSON GROUP PLC	3.23%	3.39M	96.4M	482.5K	+16.61%
Jun 30, 2025	ALPHA WAVE GLOBAL, LP	2.27%	2.38M	67.83M	0	0
Jun 30, 2025	VIKING GLOBAL INVESTORS LP	1.54%	1.62M	45.99M	0	0
Jun 30, 2025	VANGUARD GROUP INC	1.42%	1.49M	42.43M	24.47K	+1.67%
Jun 30, 2025	ALLIANCEBERNSTEIN L.P.	1.36%	1.42M	40.44M	218.41K	+18.16%
Jun 30, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.38%	396.16K	11.27M	146.16K	+58.46%
Jun 30, 2025	ROYCE & ASSOCIATES LP	0.32%	331.28K	9.42M	331.28K	+100.00%
Jun 30, 2025	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0.24%	253.71K	7.22M	-227.97K	-47.33%
Jun 30, 2025	CITADEL ADVISORS LLC	0.22%	230.82K	6.57M	182.32K	+375.96%
Jun 30, 2025	SILVERARC CAPITAL MANAGEMENT, LLC	0.2%	207.58K	5.91M	94.82K	+84.09%
Jun 30, 2025	NORTHERN TRUST CORP	0.13%	135.75K	3.86M	13.43K	+10.98%
Jun 30, 2025	AXA S.A.	0.11%	114.41K	3.25M	114.41K	+100.00%
Jun 30, 2025	BARCLAYS PLC	0.05%	56.09K	1.6M	36.2K	+182.03%
Jun 30, 2025	MANUFACTURERS LIFE INSURANCE COMPANY, THE	0.05%	55.23K	1.57M	47.08K	+577.36%
Jun 30, 2025	BANK OF AMERICA CORP /DE/	0.05%	50.68K	1.44M	40.07K	+377.81%
Jun 30, 2025	SG AMERICAS SECURITIES, LLC	0.05%	47.66K	1.36M	43.02K	+925.69%
Jun 30, 2025	UBS GROUP AG	0.04%	46.27K	1.32M	-59.01K	-56.05%
Jun 30, 2025	GOLDMAN SACHS GROUP INC	0.04%	38.95K	1.11M	18.09K	+86.76%
Jun 30, 2025		0.04%	37.46K	1.07M	17.15K	+84.39%
Jun 30, 2025	UBS ASSET MANAGEMENT AMERICAS INC	0.05%	53.09K	1.51M	53.09K	+100.00%
Jun 30, 2025	CORMORANT ASSET MANAGEMENT, LP	0.38%	400K	11.38M	0	0
Mar 31, 2025	ALPHA WAVE GLOBAL, LP	3.2%	2.38M	64.89M	2.38M	+100.00%
Mar 31, 2025	RHUMBLINE ADVISERS	0.03%	19.11K	520.03K	19.11K	+100.00%
Mar 31, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.03%	19.11K	520.23K	19.11K	+100.00%
Mar 31, 2025	BARCLAYS PLC	0.03%	19.89K	541K	19.89K	+100.00%
Mar 31, 2025	WELLINGTON MANAGEMENT GROUP LLP	3.23%	2.4M	65.38M	2.4M	+100.00%
Mar 31, 2025	JANUS HENDERSON GROUP PLC	3.91%	2.91M	81.34M	2.91M	+100.00%
Mar 31, 2025	VR ADVISER, LLC	5.04%	3.75M	102.09M	3.75M	+100.00%
Mar 31, 2025	BOOTHBAY FUND MANAGEMENT, LLC	0.06%	48.11K	1.31M	48.11K	+100.00%
Mar 31, 2025	UBS GROUP AG	0.14%	105.28K	2.87M	105.28K	+100.00%
Mar 31, 2025	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.17%	125.28K	3.41M	125.28K	+100.00%
Mar 31, 2025	IKARIAN CAPITAL, LLC	0.2%	150K	4.08M	150K	+100.00%
Mar 31, 2025	BRAIDWELL LP	0.24%	175K	4.76M	175K	+100.00%
Mar 31, 2025	AMERICAN CENTURY COMPANIES INC	0.38%	286.21K	7.79M	286.21K	+100.00%
Mar 31, 2025	WOODLINE PARTNERS LP	0.4%	300.22K	8.17M	300.22K	+100.00%
Mar 31, 2025	CORMORANT ASSET MANAGEMENT, LP	0.54%	400K	10.89M	400K	+100.00%
Mar 31, 2025	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)	0.67%	500K	13.61M	500K	+100.00%
Mar 31, 2025	ALLIANCEBERNSTEIN L.P.	1.62%	1.2M	32.74M	1.2M	+100.00%
Mar 31, 2025	VIKING GLOBAL INVESTORS LP	2.17%	1.62M	44M	1.62M	+100.00%
Mar 31, 2025	BLACKROCK, INC.	2.44%	1.81M	49.39M	1.81M	+100.00%
Mar 31, 2025	T. ROWE PRICE INVESTMENT MANAGEMENT, INC.	3.89%	2.89M	78.75M	2.89M	+100.00%
Mar 31, 2025	ALPHABET INC.	6.67%	4.96M	135.06M	4.96M	+100.00%
Mar 31, 2025	FMR LLC	20.39%	15.17M	412.87M	15.17M	+100.00%
Mar 31, 2025	SILVERARC CAPITAL MANAGEMENT, LLC	0.15%	112.76K	3.07M	112.76K	+100.00%
Mar 31, 2025	NORTHERN TRUST CORP	0.16%	122.32K	3.33M	122.32K	+100.00%
Mar 31, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.58%	434.65K	11.83M	434.65K	+100.00%
Mar 31, 2025	RA CAPITAL MANAGEMENT, L.P.	0.91%	675.53K	18.39M	675.53K	+100.00%
Mar 31, 2025	CITADEL ADVISORS LLC	0.07%	48.5K	1.32M	48.5K	+100.00%
Mar 31, 2025	SCHONFELD STRATEGIC ADVISORS LLC	0.03%	21.4K	582.37K	21.4K	+100.00%
Mar 31, 2025	BANK OF NEW YORK MELLON CORP	0.04%	32.49K	884.49K	32.49K	+100.00%
Mar 31, 2025		0.03%	20.32K	553.03K	20.32K	+100.00%
Mar 31, 2025	GOLDMAN SACHS GROUP INC	0.03%	20.86K	567.7K	20.86K	+100.00%
Mar 31, 2025	SOFINNOVA INVESTMENTS, INC.	0.05%	36.8K	1M	36.8K	+100.00%
Mar 31, 2025	MORGAN STANLEY	0.06%	45.47K	1.24M	45.47K	+100.00%
Mar 31, 2025	INVESCO LTD.	0.01%	9.97K	271.49K	9.97K	+100.00%
Mar 31, 2025	AMERIPRISE FINANCIAL INC	0.01%	10.02K	272.8K	10.02K	+100.00%
Mar 31, 2025	BANK OF AMERICA CORP /DE/	0.01%	10.61K	288.7K	10.61K	+100.00%
Mar 31, 2025	STATE STREET CORP	0.33%	248.65K	6.77M	248.65K	+100.00%
Mar 31, 2025	EVENTIDE ASSET MANAGEMENT, LLC	0.34%	250K	6.81M	250K	+100.00%
Mar 31, 2025	JENNISON ASSOCIATES LLC	0.48%	355.57K	9.68M	355.57K	+100.00%
Mar 31, 2025	VANGUARD GROUP INC	1.97%	1.47M	39.93M	1.47M	+100.00%
Mar 31, 2025	CITIGROUP INC	0.01%	10.85K	295.37K	10.85K	+100.00%
Mar 31, 2025	DEUTSCHE BANK AG\	0.02%	13.74K	374K	13.74K	+100.00%
Mar 31, 2025	TD ASSET MANAGEMENT INC	0.1%	76.82K	2.09M	76.82K	+100.00%
Mar 31, 2025	SIREN, L.L.C.	0.2%	150K	4.08M	150K	+100.00%
Mar 31, 2025	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0.65%	481.68K	13.11M	481.68K	+100.00%
Mar 31, 2025	DEEP TRACK CAPITAL, LP	1.47%	1.09M	29.79M	1.09M	+100.00%
Mar 31, 2025	PARADIGM BIOCAPITAL ADVISORS LP	1.6%	1.19M	32.43M	1.19M	+100.00%
Mar 31, 2025	PRICE T ROWE ASSOCIATES INC /MD/	2.09%	1.56M	42.4M	1.56M	+100.00%
Mar 31, 2025	PRUDENTIAL FINANCIAL INC	0.02%	14.9K	405.58K	14.9K	+100.00%
Mar 31, 2025	MILLENNIUM MANAGEMENT LLC	0.1%	73.7K	2.01M	73.7K	+100.00%

Insiders

Insiders	Designation	Shares Held
FMR LLC	See Remark 1	2.36M

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Nov 03, 2025	FMR LLC	SALE	61.23	193	11.82K	2.36M
Sep 02, 2025	FMR LLC	SALE	36.00	268	9.65K	0

MTSR Stock Ownership Breakdown

Metsera

Stock Outstanding Shares

Market Insider

Institutional Ownership

Insiders

Buying/Selling by Insiders

Frequently Asked Questions

Stock Outstanding Shares

Market Insider

Institutional Ownership

Insiders

Buying/Selling by Insiders

Frequently Asked Questions