Security key
03835T309
Aptose Biosciences Inc. - Common Shares (APTO)
CUSIP: 03835T309
Q1 2024 13F Holders as of 31 Mar 2024
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 977,602
- Total 13F value
- $1,623,107
- Share change
- -131,033
- SEC-reported price per share
- $1.66
- Number of holders
- 20
- Value change
- -$345,174
- Number of buys
- 4
- Number of sells
- 10
- Shares outstanding
- 2,587,950
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2024
Institutions
20
Top holders
10
APTO full security history
Ownership snapshot
Full 13F holder table
Aptose Biosciences Inc. SEC filings
Aptose Biosciences Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of APTO - 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
DRW Securities, LLC
Disclosed value leader
DRW Securities, LLC
Comparable rows
15/15
Latest evidence
31 Dec 2023
13F
Lead comparable stake: 23%
Showing 1-6 of 15 holder rows.
Quick read
DRW Securities, LLC leads the comparable SEC ownership view at 23%.
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 DRW Securities, LLC's linked filing trail.
Comparable ownership
Top 5
DRW Securities, LLC
23%
Nantahala Capital Management, LLC
4.6%
Carlson Capital, L.P.
3.7%
MORGAN STANLEY
3.5%
Annandale Capital, LLC
2.9%
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 |
|---|---|---|---|---|---|
| DRW Securities, LLC |
13F
Company
|
23%
|
$1,505,786
592,829 shares
|
— | 31 Dec 2023 |
| Nantahala Capital Management, LLC |
13F
Company
|
4.6%
|
$305,135
120,132 shares
|
— | 31 Dec 2023 |
| Carlson Capital, L.P. |
13F
Company
|
3.7%
|
$245,532
96,666 shares
|
— | 31 Dec 2023 |
| MORGAN STANLEY |
13F
Company
|
3.5%
|
$227,231
89,461 shares
|
— | 31 Dec 2023 |
| Annandale Capital, LLC |
13F
Company
|
2.9%
|
$188,000
74,666 shares
|
— | 31 Dec 2023 |
| Sigma Planning Corp |
13F
Company
|
2.9%
|
$191,712
75,477 shares
|
— | 31 Dec 2023 |
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 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
20
Shares
977,602
Rows available
20
| 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 2024 vs Q1 2024 Across Filers
Q1 2024 holders
20
Q1 2024 holders
20
Holder diff
0
| Investor | Q1 2024 Shares | Q1 2024 Shares | Share Diff | Share Chg % | Q1 2024 value | Q1 2024 value | Value change | Value Chg % |
|---|