What does CUSIP 03835T200 represent in this 13F holders report?

CUSIP 03835T200 is the security identifier for 03835T200 - Aptose Biosciences Inc. - Common Shares used to aggregate holder disclosures.

How many institutions held 03835T200 - Aptose Biosciences Inc. - Common Shares in Q1 2021?

71 institutional investors reported 03835T200 - Aptose Biosciences Inc. - Common Shares for Q1 2021. Use the holders table for investor-level position and value details.

Aptose Biosciences Inc. - Common Shares

CUSIP: 03835T200

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Common Shares
Total 13F shares: 52,369,697
Total 13F value: $312,930,503
Share change: +3,651,537
Put/Call ratio: 39%
SEC-reported price per share: $5.98
Number of holders: 71
Value change: +$27,233,992
Number of buys: 39
Number of sells: 32
Shares outstanding: 2,556,332

Security key

03835T200

Report period

Q1 2021

Institutions

Top holders

03835T200 full security history Ownership snapshot Full 13F holder table Aptose Biosciences Inc. SEC filings Aptose Biosciences Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of 03835T200 - Aptose Biosciences Inc. - Common Shares (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

ORBIMED ADVISORS LLC

Disclosed value leader

ORBIMED ADVISORS LLC

Comparable rows

15/15

Latest evidence

31 Dec 2020

13F Lead comparable stake: 314% Showing 1-6 of 15 holder rows.

Quick read

ORBIMED ADVISORS LLC leads the comparable SEC ownership view at 314%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens ORBIMED ADVISORS LLC's linked filing trail.

Comparable ownership Top 5

ORBIMED ADVISORS LLC 314%

DRW Securities, LLC 312%

Nantahala Capital Management, LLC 284%

PICTET ASSET MANAGEMENT LTD 154%

Corriente Advisors, LLC 113%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
ORBIMED ADVISORS LLC	13F Company 13F	314%	$35,171,000 8,030,000 shares	—	31 Dec 2020
DRW Securities, LLC	13F Company 13F	312%	$34,936,000 7,976,176 shares	—	31 Dec 2020
Nantahala Capital Management, LLC	13F Company 13F	284%	$31,854,000 7,272,673 shares	—	31 Dec 2020
PICTET ASSET MANAGEMENT LTD	13F Company 13F	154%	$17,225,000 3,925,730 shares	—	31 Dec 2020
Corriente Advisors, LLC	13F Company 13F	113%	$12,702,000 2,900,000 shares	—	31 Dec 2020
EVENTIDE ASSET MANAGEMENT, LLC	13F Company 13F	90%	$10,070,000 2,299,000 shares	—	31 Dec 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

52,369,697

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2021 vs Q1 2021 Across Filers

Q1 2021 holders

Holder diff

Investor	Q1 2021 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q1 2021 value	Value change	Value Chg %