How many institutions own OSTX 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 OSTX shares is 14, representing 1.91% of the company's common stock.

Who are the major shareholders selling OS Therapies Incorporated stock?

MARSHALL WACE, LLP, in the last quarter, reduced its stake in OSTX by -44.62% restricting it's holding to 109.95 thousand shares of worth nearly $153.93K. MERCER GLOBAL ADVISORS INC /ADV also lessened -50% of the OSTX shares from its portfolio, reducing its holding to 10.22 thousand shares of worth $14.31K. TOWER RESEARCH CAPITAL LLC (TRC) also shunned OSTX shares holding by -97.89% last quarter which brought its holding to 88 shares worth $123.00.

Investors who are buying OSTX stock?

As per its latest 13F filing, GEODE CAPITAL MANAGEMENT, LLC increased its stake in OSTX by 31.09% in the last quarter. The institutional holder raised its holding to 246.04 thousand shares having worth more than $344.45K. NORTHERN TRUST CORP also added 26.74% more shares of OSTX to its portfolio, raising its holding to 71.31 thousand shares of worth $99.83K. BANK OF AMERICA CORP /DE/ also increased its OSTX shares holding by 100% which brought its holding to 23 shares worth $32.00.

OSTX's major insiders: who are they?

The insider with the most stakes in OSTX is Auerbach Shalom , 10 percent owner at the company. Additionally, OSTX stock is highly held by N/A N/A and N/A N/A among others.

Did an insider recently sell OSTX stock?

Company executives, directors, and other insiders own 31.15% percent of OS Therapies Incorporated's stock. Within the last six months, there have been 0 transaction(s) in which OSTX insiders have sold stock, totaling 0 shares. Insiders that have sold shares include AUERBACH SHALOM.

Which insider recently purchased OSTX stock?

There have been 0 transaction(s) during the past 6-months in which OS Therapies Incorporated insiders have bought stock, totalling 0 shares

How much of OSTX does insiders own?

Around 0 OS Therapies Incorporated shares are held by insiders, which represents about 31.15% of OSTX stock.

Who is the insider with the largest stake?

OSTX 10 percent owner, Auerbach Shalom holds the largest portfolio of the company's shares. OSTX shares owned by Auerbach total nearly 2.66 million.

Which institution holds the most shares in OSTX?

CM MANAGEMENT, LLC is the largest institutional owner in OSTX which holds 400 thousand shares worth $560.00K or 1.25% of the total OSTX shares outstanding followed by GEODE CAPITAL MANAGEMENT, LLC with ownership of 246.04 thousand shares representing 0.77% of the OSTX ownership. MARSHALL WACE, LLP is the third largest stakeholder with 109.95 thousand shares or 0.34% of the ownership worth more than $153.93K.

Is OS Therapies Incorporated 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 OSTX is concerned, it is a stock which is not optionable.

Is there a short position on OSTX's shares?

Number of OSTX shares short is 348.36K. 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 OSTX shares are there?

As of today, 31.62M shares of OSTX are outstanding.

Is there many float in OSTX 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, OSTX has 20.95M shares in float.

OSTX 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 OSTX is 0.51.

OS Therapies (OSTX) 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.

ShortableYes

OptionableNo

Short Percent Of Outstanding Shares1.03

Short Percent Of Float1.25

Shares Outstanding31.62M

Shares Float20.95M

Shares Short348.36K

Short Ratio0.51

1.25%

Short % of Float

1.03%

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

31.15% Percentage of Shares held by All Insiders

1.91% Percentage of Shares held by All Institutions

2.77% Percentage of Float held by Institutions

Number of Institutions Holding Shares

Institutional Ownership

About 1.91% of OSTX shares are held by financial institutions. CM MANAGEMENT, LLC is the top corporate investor, holding 400K shares valued at $560.00K. A 1.25% stake in OS Therapies Incorporated is owned by the company. GEODE CAPITAL MANAGEMENT, LLC owns 246.04K shares valued at $344.45K, which translates its holding of 0.77% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Dec 31, 2025	CM MANAGEMENT, LLC	1.25%	400K	560K	0	0
Dec 31, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.77%	246.04K	344.45K	58.35K	+31.09%
Dec 31, 2025	MARSHALL WACE, LLP	0.34%	109.95K	153.93K	-88.6K	-44.62%
Dec 31, 2025	NORTHERN TRUST CORP	0.22%	71.31K	99.83K	15.05K	+26.74%
Dec 31, 2025	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0.08%	25K	35K	0	0
Dec 31, 2025	MERCER GLOBAL ADVISORS INC /ADV	0.03%	10.22K	14.31K	-10.22K	-50.00%
Dec 31, 2025	MORGAN STANLEY	0%	1K	1.4K	0	0
Dec 31, 2025	TOWER RESEARCH CAPITAL LLC (TRC)	0%	88	123	-4.08K	-97.89%
Dec 31, 2025	BANK OF AMERICA CORP /DE/	0%	23	32	23	+100.00%
Dec 31, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0%	0	-	-14.96K	-100.00%
Dec 31, 2025	TWO SIGMA SECURITIES, LLC	0%	0	-	-10.24K	-100.00%
Dec 31, 2025	GROUND SWELL CAPITAL, LLC	0%	0	-	-20.46K	-100.00%
Dec 31, 2025	BLACKROCK, INC.	0.19%	61.43K	86K	13.26K	+27.54%
Dec 31, 2025	STATE STREET CORP	0.18%	58.5K	81.9K	8.2K	+16.30%
Dec 31, 2025	INGALLS & SNYDER LLC	0.11%	36.68K	51K	0	0
Dec 31, 2025	JANE STREET GROUP, LLC	0.09%	27.74K	38.84K	27.74K	+100.00%
Dec 31, 2025	UBS GROUP AG	0.06%	18.16K	25.42K	17.93K	+7,898.24%
Dec 31, 2025	STIFEL FINANCIAL CORP	0.05%	15K	21K	0	0
Dec 31, 2025	STRATOS WEALTH ADVISORS, LLC	0.04%	13.82K	19.34K	13.82K	+100.00%
Dec 31, 2025	JONES FINANCIAL COMPANIES LLLP	0.03%	10.87K	15.21K	3K	+38.13%
Dec 31, 2025	LPL FINANCIAL LLC	0.03%	10.11K	14.16K	10.11K	+100.00%
Dec 31, 2025	ROYAL BANK OF CANADA	0%	480	1K	480	+100.00%
Dec 31, 2025	ARMSTRONG ADVISORY GROUP, INC	0%	100	140	0	0
Dec 31, 2025	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	0%	25	35	25	+100.00%
Dec 31, 2025	JPMORGAN CHASE & CO	0%	0	-	-13	-100.00%
Dec 31, 2025	SANDERS MORRIS HARRIS LLC	0%	0	-	-12K	-100.00%
Dec 31, 2025	TWO SIGMA INVESTMENTS, LP	0.27%	87.54K	122.55K	1.29K	+1.50%
Dec 31, 2025	MILLENNIUM MANAGEMENT LLC	0.1%	30.79K	43.1K	-62.79K	-67.10%
Dec 31, 2025	VIRTU FINANCIAL LLC	0%	0	-	-75.8K	-100.00%
Dec 31, 2025	VANGUARD GROUP INC	1.69%	540.42K	756.59K	352.16K	+187.06%
Sep 30, 2025	MILLENNIUM MANAGEMENT LLC	0.29%	93.57K	183.41K	93.57K	+100.00%
Sep 30, 2025	JPMORGAN CHASE & CO	0%	13	25	-309	-95.96%
Sep 30, 2025	MARSHALL WACE, LLP	0.62%	198.55K	389.16K	198.55K	+100.00%
Sep 30, 2025	GEODE CAPITAL MANAGEMENT, LLC	0.59%	187.69K	367.87K	187.69K	+100.00%
Sep 30, 2025	TWO SIGMA INVESTMENTS, LP	0.27%	86.25K	169.04K	86.25K	+100.00%
Sep 30, 2025	VIRTU FINANCIAL LLC	0.24%	75.8K	149K	54.27K	+252.04%
Sep 30, 2025	NORTHERN TRUST CORP	0.18%	56.26K	110.28K	56.26K	+100.00%
Sep 30, 2025	STATE STREET CORP	0.16%	50.3K	98.59K	50.3K	+100.00%
Sep 30, 2025	BLACKROCK, INC.	0.15%	48.16K	94.4K	17.88K	+59.05%
Sep 30, 2025	INGALLS & SNYDER LLC	0.11%	36.68K	72K	0	0
Sep 30, 2025	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0.08%	25K	49K	0	0
Sep 30, 2025	GROUND SWELL CAPITAL, LLC	0.06%	20.46K	40.11K	20.46K	+100.00%
Sep 30, 2025	MERCER GLOBAL ADVISORS INC /ADV	0.06%	20.44K	40.06K	20.44K	+100.00%
Sep 30, 2025	STIFEL FINANCIAL CORP	0.05%	15K	29.4K	0	0
Sep 30, 2025	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.05%	14.96K	29.32K	14.96K	+100.00%
Sep 30, 2025	SANDERS MORRIS HARRIS LLC	0.04%	12K	23.52K	12K	+100.00%
Sep 30, 2025	TWO SIGMA SECURITIES, LLC	0.03%	10.24K	20.07K	10.24K	+100.00%
Sep 30, 2025	FULL SAIL CAPITAL, LLC	0.03%	10.22K	20.03K	0	0
Sep 30, 2025	JONES FINANCIAL COMPANIES LLLP	0.02%	7.87K	16.13K	7.87K	+100.00%
Sep 30, 2025	TOWER RESEARCH CAPITAL LLC (TRC)	0.01%	4.17K	8.17K	1.62K	+63.41%
Sep 30, 2025	MORGAN STANLEY	0%	1K	1.96K	260	+35.14%
Sep 30, 2025	UBS GROUP AG	0%	227	445	-52.59K	-99.57%
Sep 30, 2025	ARMSTRONG ADVISORY GROUP, INC	0%	100	196	0	0
Sep 30, 2025	XTX TOPCO LTD	0%	0	-	-33.49K	-100.00%
Sep 30, 2025	CM MANAGEMENT, LLC	1.25%	400K	784K	25K	+6.67%
Sep 30, 2025	VANGUARD GROUP INC	0.59%	188.26K	369K	188.26K	+100.00%

Insiders

Among the OSTX insiders holding of 31.15% of the stake in company, AUERBACH SHALOM, 10 percent owner, holds the largest shares of 2.66M. , , is the second largest OSTX insider with ownership of - shares. , , stands third with possession of - shares of that stake.

Insiders	Designation	Shares Held
AUERBACH SHALOM	10 percent owner	2.66M

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
May 07, 2025	AUERBACH SHALOM	SALE	2.00	82K	163.92K	2.66M
Apr 10, 2025	AUERBACH SHALOM	SALE	1.39	10K	13.9K	2.75M
Apr 09, 2025	AUERBACH SHALOM	SALE	1.35	50.01K	67.67K	2.76M
Feb 14, 2025	AUERBACH SHALOM	SALE	2.84	100K	284.3K	2.43M

OSTX Stock Ownership Breakdown

OS Therapies

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