How many institutions own APTO 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 APTO shares is 26, representing 11.51% of the company's common stock.

Who are the major shareholders selling Aptose Biosciences Inc. stock?

JPMORGAN CHASE & CO, in the last quarter, reduced its stake in APTO by -100% restricting it's holding to 0 shares of worth nearly -. FEDERATION DES CAISSES DESJARDINS DU QUEBEC also lessened -100% of the APTO shares from its portfolio, reducing its holding to 0 shares of worth -. NEWBRIDGE FINANCIAL SERVICES GROUP, INC. also shunned APTO shares holding by -100% last quarter which brought its holding to 0 shares worth -.

Investors who are buying APTO stock?

As per its latest 13F filing, FARTHER FINANCE ADVISORS, LLC increased its stake in APTO by 100% in the last quarter. The institutional holder raised its holding to 10 shares having worth more than $15.00. CALDWELL SUTTER CAPITAL, INC. also added 100% more shares of APTO to its portfolio, raising its holding to 2 shares of worth $2.00. GLEASON GROUP, INC. also increased its APTO shares holding by 10,415% which brought its holding to 4.21 thousand shares worth $3.55K.

APTO's major insiders: who are they?

The insider with the most stakes in APTO is Wilson Donald R. Jr. , 10 percent owner at the company. Additionally, APTO stock is highly held by director PLATZER ERICH and Executive VP & CFO Chow Gregory K. among others.

Did an insider recently sell APTO stock?

Company executives, directors, and other insiders own 24.8% percent of Aptose Biosciences Inc.'s stock. Within the last six months, there have been 0 transaction(s) in which APTO insiders have sold stock, totaling 0 shares. Insiders that have sold shares include WILSON DONALD R. JR., WHITEHEAD WARREN, and MARANGO JOTIN.

Which insider recently purchased APTO stock?

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

How much of APTO does insiders own?

Around 0 Aptose Biosciences Inc. shares are held by insiders, which represents about 24.8% of APTO stock.

Who is the insider with the largest stake?

APTO 10 percent owner, Wilson Donald R. Jr. holds the largest portfolio of the company's shares. APTO shares owned by Wilson total nearly 8.89 million.

Which institution holds the most shares in APTO?

DRW SECURITIES, LLC is the largest institutional owner in APTO which holds 19.76 thousand shares worth $29.25K or 0.81% of the total APTO shares outstanding followed by CALDWELL SUTTER CAPITAL, INC. with ownership of 2 shares representing 0% of the APTO ownership. FARTHER FINANCE ADVISORS, LLC is the third largest stakeholder with 10 shares or 0% of the ownership worth more than $15.00.

Is Aptose Biosciences 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 APTO is concerned, it is a stock which is not optionable.

Is there a short position on APTO's shares?

Number of APTO shares short is 53.15K. 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 APTO shares are there?

As of today, 2.55M shares of APTO are outstanding.

Is there many float in APTO 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, APTO has 499.77K shares in float.

APTO 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 APTO is 0.14.

Aptose Biosciences (APTO) 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

OptionableNo

Short Percent Of Outstanding Shares2.48

Short Percent Of Float2.6

Shares Outstanding2.55M

Shares Float499.77K

Shares Short53.15K

Short Ratio0.14

2.6%

Short % of Float

2.48%

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

24.8% Percentage of Shares held by All Insiders

11.51% Percentage of Shares held by All Institutions

15.31% Percentage of Float held by Institutions

Number of Institutions Holding Shares

Institutional Ownership

About 11.51% of APTO shares are held by financial institutions. DRW SECURITIES, LLC is the top corporate investor, holding 19.76K shares valued at $29.25K. A 0.81% stake in Aptose Biosciences Inc. is owned by the company. CALDWELL SUTTER CAPITAL, INC. owns 2 shares valued at $3.00, which translates its holding of 0% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Dec 31, 2025	DRW SECURITIES, LLC	0.81%	19.76K	29.25K	0	0
Dec 31, 2025	CALDWELL SUTTER CAPITAL, INC.	0%	2	3	0	0
Dec 31, 2025	FARTHER FINANCE ADVISORS, LLC	0%	10	15	10	+100.00%
Dec 31, 2025	GLEASON GROUP, INC.	0.17%	4.21K	6.5K	0	0
Jun 30, 2025	JPMORGAN CHASE & CO	0%	0	-	-36	-100.00%
Jun 30, 2025	CALDWELL SUTTER CAPITAL, INC.	0%	2	2	2	+100.00%
Jun 30, 2025	FEDERATION DES CAISSES DESJARDINS DU QUEBEC	0%	0	-	-103	-100.00%
Jun 30, 2025	NEWBRIDGE FINANCIAL SERVICES GROUP, INC.	0%	0	-	-26	-100.00%
Jun 30, 2025	HIGHMARK WEALTH MANAGEMENT LLC	0%	0	-	-9	-100.00%
Jun 30, 2025	BLEICHROEDER LP	0%	0	-	-121.37K	-100.00%
Jun 30, 2025	GLEASON GROUP, INC.	0.16%	4.21K	3.55K	4.17K	+10,415.00%
Jun 30, 2025	DRW SECURITIES, LLC	0.93%	19.76K	17.15K	19.76K	+100.00%
Jun 30, 2025	SIGMA PLANNING CORP	0%	0	-	-17.39K	-100.00%
Jun 30, 2025	SBI SECURITIES CO., LTD.	0%	0	-	-4	-100.00%
Jun 30, 2025	ROYAL BANK OF CANADA	0%	0	-	-1.35K	-100.00%
Jun 30, 2025	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	0%	0	-	-2.06K	-100.00%
Jun 30, 2025		0%	0	-	-4	-100.00%
Jun 30, 2025	GROUP ONE TRADING, L.P.	0%	0	-	-3	-100.00%
Jun 30, 2025	DANSKE BANK A/S	0%	0	-	-4	-100.00%
Jun 30, 2025	CITADEL ADVISORS LLC	0%	0	-	-12.01K	-100.00%
Jun 30, 2025	NATIONAL BANK OF CANADA /FI/	0%	0	-	-93	-100.00%
Jun 30, 2025	MORGAN STANLEY	0%	0	-	-101	-100.00%
Mar 31, 2025	GLEASON GROUP, INC.	0%	0	-	-1.22K	-100.00%
Mar 31, 2025	HIGHMARK WEALTH MANAGEMENT LLC	0%	0	-	-300	-100.00%
Mar 31, 2025	BLEICHROEDER LP	0%	0	-	-2.5M	-100.00%
Mar 31, 2025	NEWBRIDGE FINANCIAL SERVICES GROUP, INC.	0%	0	-	-832	-100.00%
Mar 31, 2025	CITADEL ADVISORS LLC	0.56%	12.01K	38K	12.01K	+100.00%
Mar 31, 2025	ROYAL BANK OF CANADA	0.06%	1.35K	4K	1.35K	+100.00%
Mar 31, 2025	NATIONAL BANK OF CANADA /FI/	0%	93	293	93	+100.00%
Mar 31, 2025	JPMORGAN CHASE & CO	0%	36	8	36	+100.00%
Mar 31, 2025	NATIONS FINANCIAL GROUP INC, /IA/ /ADV	0%	0	-	-19.5K	-100.00%
Mar 31, 2025	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	0%	0	-	-133	-100.00%
Mar 31, 2025	GROUP ONE TRADING, L.P.	0%	0	-	-115	-100.00%
Mar 31, 2025	US BANCORP \DE\	0%	0	-	-2.02K	-100.00%
Mar 31, 2025	CALDWELL SUTTER CAPITAL, INC.	0%	0	-	-92	-100.00%
Mar 31, 2025	MORGAN STANLEY	0%	0	-	-5.5K	-100.00%
Mar 31, 2025	TWO SIGMA SECURITIES, LLC	0%	0	-	-11.4K	-100.00%
Mar 31, 2025	HRT FINANCIAL LP	0%	0	-	-43.11K	-100.00%
Mar 31, 2025	DRW SECURITIES, LLC	0%	0	-	-592.83K	-100.00%
Mar 31, 2025	UBS GROUP AG	0%	0	-	-57.83K	-100.00%
Mar 31, 2025	CETERA INVESTMENT ADVISERS	0%	0	-	-19.21K	-100.00%
Mar 31, 2025	PACIFIC CAPITAL WEALTH ADVISORS, INC	0%	0	-	-6	-100.00%
Mar 31, 2025	ANNANDALE CAPITAL, LLC	0%	0	-	-26.67K	-100.00%
Mar 31, 2025	SIGMA PLANNING CORP	0%	0	-	-703.38K	-100.00%
Mar 31, 2025	ADVISOR GROUP HOLDINGS, INC.	0%	0	-	-420	-100.00%
Mar 31, 2025	STEWARD PARTNERS INVESTMENT ADVISORY, LLC	0%	0	-	-3	-100.00%
Mar 31, 2025		0%	0	-	-135	-100.00%
Mar 31, 2025	FEDERATION DES CAISSES DESJARDINS DU QUEBEC	0%	0	-	-102	-100.00%
Mar 31, 2025	TD WATERHOUSE CANADA INC.	0%	0	-	-684	-100.00%
Dec 31, 2024	ANNANDALE CAPITAL, LLC	0.02%	26.67K	6K	0	0
Dec 31, 2024	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	0%	133	30	0	0
Dec 31, 2024	ADVISOR GROUP HOLDINGS, INC.	0%	420	95	0	0
Dec 31, 2024	US BANCORP \DE\	0%	2.02K	455	0	0
Dec 31, 2024	MORGAN STANLEY	0%	5.5K	1.24K	-25.85K	-82.45%
Dec 31, 2024	UBS GROUP AG	0.04%	57.83K	13.01K	-75.65K	-56.68%
Dec 31, 2024	SIGMA PLANNING CORP	0.53%	703.38K	158.47K	301.63K	+75.08%
Dec 31, 2024	NATIONS FINANCIAL GROUP INC, /IA/ /ADV	0.11%	19.5K	4.39K	19.5K	+100.00%
Dec 31, 2024	TD WATERHOUSE CANADA INC.	0%	684	154	0	0
Dec 31, 2024	HIGHMARK WEALTH MANAGEMENT LLC	0%	300	68	0	0
Dec 31, 2024		0%	135	30	135	+100.00%
Dec 31, 2024	GROUP ONE TRADING, L.P.	0%	115	26	0	0
Dec 31, 2024	PACIFIC CAPITAL WEALTH ADVISORS, INC	0%	6	1	0	0
Dec 31, 2024	PDS PLANNING, INC	0%	0	-	-10K	-100.00%
Dec 31, 2024	ARMISTICE CAPITAL, LLC	0%	0	-	-1.89M	-100.00%
Dec 31, 2024	CALDWELL SUTTER CAPITAL, INC.	0%	92	21	0	0
Dec 31, 2024	NEWBRIDGE FINANCIAL SERVICES GROUP, INC.	0%	832	187	0	0
Dec 31, 2024	GLEASON GROUP, INC.	0%	1.22K	274	0	0
Dec 31, 2024	HRT FINANCIAL LP	0.03%	43.11K	9K	43.11K	+100.00%
Dec 31, 2024	DRW SECURITIES, LLC	0.45%	592.83K	133.56K	0	0
Dec 31, 2024	BLEICHROEDER LP	1.88%	2.5M	563.25K	2.5M	+100.00%
Dec 31, 2024	TEXAS CAPITAL BANK WEALTH MANAGEMENT SERVICES INC	0%	0	-	-12.45K	-100.00%
Dec 31, 2024	ROYAL BANK OF CANADA	0%	0	-	-1.73K	-100.00%
Dec 31, 2024	WELLS FARGO & COMPANY/MN	0%	0	-	-55	-100.00%
Dec 31, 2024	STEWARD PARTNERS INVESTMENT ADVISORY, LLC	0%	3	1	3	+100.00%
Mar 31, 2024	CALDWELL SUTTER CAPITAL, INC.	0%	92	153	0	0
Mar 31, 2024	ANNANDALE CAPITAL, LLC	0.39%	26.67K	44K	-48K	-64.29%
Dec 31, 2023	ANNANDALE CAPITAL, LLC	1.15%	74.67K	188K	0	0
Dec 31, 2023	CALDWELL SUTTER CAPITAL, INC.	0%	92	234	0	0
Sep 30, 2023	ANNANDALE CAPITAL, LLC	17.97%	74.67K	-	21.33K	+40.00%
Sep 30, 2023	CALDWELL SUTTER CAPITAL, INC.	0.02%	92	-	0	0

Insiders

Among the APTO insiders holding of 24.8% of the stake in company, WILSON DONALD R. JR., 10 percent owner, holds the largest shares of 8.89M. PLATZER ERICH, director, is the second largest APTO insider with ownership of 455K shares. CHOW GREGORY K., Executive VP & CFO, stands third with possession of 232.85K shares of that stake.

Insiders	Designation	Shares Held
WILSON DONALD R. JR.	10 percent owner	8.89M
PLATZER ERICH	director	455K
CHOW GREGORY K.	Executive VP & CFO	232.85K
MARANGO JOTIN	Senior VP, Chief Bus. Officer	116.22K
RICE WILLIAM G.	Chair, President & CEO	50K
BURGER DENIS R	director	31.67K
SEIZINGER BERND R.	director	17K
WHITEHEAD WARREN	director	15K
BEJAR RAFAEL	Sr. VP, Chief Medical Officer	10K

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Nov 25, 2024	RICE WILLIAM G.	PURCHASE	0.25	50K	12.5K	50K
Sep 22, 2023	SEIZINGER BERND R.	PURCHASE	3.14	17K	53.38K	17K
Sep 19, 2022	RICE WILLIAM G.	PURCHASE	0.68	10K	6.83K	363.25K
Jun 06, 2022	RICE WILLIAM G.	PURCHASE	0.97	10K	9.68K	353.25K
Dec 20, 2021	BURGER DENIS R	PURCHASE	1.45	10K	14.49K	31.67K
Dec 16, 2021	PLATZER ERICH	PURCHASE	1.37	50K	68.5K	455K
Dec 16, 2021	RICE WILLIAM G.	PURCHASE	1.52	13.18K	20.04K	343.25K
Dec 15, 2021	RICE WILLIAM G.	PURCHASE	1.12	17.82K	19.96K	330.07K
Dec 15, 2021	PLATZER ERICH	PURCHASE	1.16	120K	139.08K	255K
Nov 26, 2021	RICE WILLIAM G.	PURCHASE	2.31	8.64K	19.97K	312.25K
Nov 19, 2021	BEJAR RAFAEL	PURCHASE	2.56	10K	25.6K	10K
Aug 05, 2021	WILSON DONALD R. JR.	SALE	2.62	60K	157.2K	8.89M
Aug 03, 2021	WILSON DONALD R. JR.	PURCHASE	2.65	57.2K	151.41K	8.95M
Jul 02, 2021	RICE WILLIAM G.	PURCHASE	3.29	6.08K	20K	303.6K
Jun 22, 2021	WHITEHEAD WARREN	SALE	3.24	9.6K	31.1K	15K
Jun 21, 2021	WHITEHEAD WARREN	SALE	3.35	15.4K	51.59K	24.6K
Dec 22, 2020	WHITEHEAD WARREN	SALE	4.11	10K	41.1K	40K
Jul 10, 2020	MARANGO JOTIN	SALE	6.05	62.84K	380.15K	116.22K
Jul 10, 2020	RICE WILLIAM G.	SALE	6.05	168.89K	1.02M	297.52K
Jul 10, 2020	CHOW GREGORY K.	SALE	6.05	126.67K	766.34K	232.85K
Jul 02, 2020	MARANGO JOTIN	SALE	6.34	20.95K	132.79K	179.05K
Jun 24, 2020	WHITEHEAD WARREN	SALE	6.78	5K	33.9K	40K
Jun 23, 2020	WHITEHEAD WARREN	SALE	7.17	5K	35.85K	45K
Mar 25, 2020	RICE WILLIAM G.	PURCHASE	5.82	3.4K	19.8K	466.41K
Oct 24, 2019	RICE WILLIAM G.	PURCHASE	1.92	10K	19.2K	163.01K
Jun 05, 2019	CHOW GREGORY K.	PURCHASE	1.84	7.5K	13.82K	134.51K
Apr 18, 2019	RICE WILLIAM G.	PURCHASE	1.85	10K	18.51K	153.01K
Mar 19, 2019	PLATZER ERICH	SALE	2.19	15K	32.84K	130K
Mar 14, 2019	RICE WILLIAM G.	PURCHASE	1.90	10K	18.99K	143.01K
Mar 13, 2019	CHOW GREGORY K.	PURCHASE	1.74	10K	17.39K	122.01K

APTO Stock Ownership Breakdown