Security key
24477V105
Definium Therapeutics, Inc. - Common Shares (DFTX)
CUSIP: 24477V105
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 78,036,684
- Total 13F value
- $1,474,447,042
- Share change
- +64,092,654
- Put/Call ratio
- 23%
- SEC-reported price per share
- $18.90
- Number of holders
- 244
- Value change
- +$1,211,067,091
- Number of buys
- 231
- Number of sells
- 5
- Shares outstanding
- 99,667,774
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 2026
Institutions
244
Top holders
10
DFTX full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
Definium Therapeutics, Inc. SEC filings
Definium Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 24477V105
Recent filing periods:
Ownership snapshot
Top reported holders of DFTX - Definium Therapeutics, 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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
31 Mar 2026
13F
13D/G
Lead comparable stake: 8.3%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 8.3%.
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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
8.3%
Commodore Capital LP
7.2%
DRIEHAUS CAPITAL MANAGEMENT LLC
6.6%
Avoro Capital Advisors LLC
5.1%
Deep Track Capital, LP
3%
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
8.3%
from 13D/G
|
$110,779,164
8,273,276 shares
|
— | 31 Dec 2025 |
| Commodore Capital LP |
13F
13D/G
Company
|
7.2%
from 13D/G
|
$26,780,000
2,000,000 shares
|
— | 31 Dec 2025 |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
13D/G
Company
|
6.6%
from 13D/G
|
$87,533,135
6,537,202 shares
|
— | 31 Dec 2025 |
| Avoro Capital Advisors LLC |
13F
13D/G
Company
|
5.1%
from 13D/G
|
$66,950,000
5,000,000 shares
|
— | 31 Dec 2025 |
| Deep Track Capital, LP |
13D/G
13F
Company
|
3%
|
$66,750,000
3,000,000 shares
|
-$59,553,015 | 31 Mar 2026 |
| VANGUARD GROUP INC |
13F
Company
|
3.2%
|
$34,705,554
2,591,901 shares
|
— | 31 Dec 2025 |
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 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
244
Shares
78,036,684
Rows available
244
| 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 2026 vs Q4 2025 Across Filers
Q4 2025 holders
8
Q1 2026 holders
244
Holder diff
236
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend