Security key
03835T200
- 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
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
71
Top holders
10
03835T200 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 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
0/15
Latest evidence
31 Dec 2020
13F
Highest disclosed value: $35,171,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
ORBIMED ADVISORS LLC has the largest disclosed position value at $35.17M.
0 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.
Disclosed position value
Top 5
ORBIMED ADVISORS LLC
$35.17M
DRW Securities, LLC
$34.94M
Nantahala Capital Management, LLC
$31.85M
PICTET ASSET MANAGEMENT LTD
$17.22M
Corriente Advisors, LLC
$12.7M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
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
|
—
denominator unverified
|
$35,171,000
8,030,000 shares
|
— | 31 Dec 2020 |
| DRW Securities, LLC |
13F
Company
|
—
denominator unverified
|
$34,936,000
7,976,176 shares
|
— | 31 Dec 2020 |
| Nantahala Capital Management, LLC |
13F
Company
|
—
denominator unverified
|
$31,854,000
7,272,673 shares
|
— | 31 Dec 2020 |
| PICTET ASSET MANAGEMENT LTD |
13F
Company
|
—
denominator unverified
|
$17,225,000
3,925,730 shares
|
— | 31 Dec 2020 |
| Corriente Advisors, LLC |
13F
Company
|
—
denominator unverified
|
$12,702,000
2,900,000 shares
|
— | 31 Dec 2020 |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
Company
|
—
denominator unverified
|
$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
71
Shares
52,369,697
Rows available
71
| 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
71
Q1 2021 holders
71
Holder diff
0
| Investor | Q1 2021 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q1 2021 value | Q1 2021 value | Value change | Value Chg % |
|---|