Security key
746964105
Q32 Bio Inc. - Common Stock, par value $0.0001 per share (QTTB)
CUSIP: 746964105
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Shares outstanding
- 24,007,250
- Total 13F shares
- 8,428,600
- Share change
- -550,098
- Total reported value
- $16,632,224
- Reported price per share
- $1.98
- Number of holders
- 52
- Value change
- -$986,951
- Number of buys
- 17
- Number of sells
- 33
Security identity
2 facts
Holder snapshot
8 facts
Report period
Q3 2025
Institutions
52
Top holders
10
QTTB full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
Q32 Bio Inc. SEC filings
Q32 Bio Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 746964105
Recent filing periods:
Ownership snapshot
Top reported holders of QTTB - Q32 Bio Inc. - Common Stock, par value $0.0001 per share (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.
Lead holder
PFIZER INC
13D/G signal
PFIZER INC
Evidence rows
15
Latest as of
30 Jun 2025
13D/G
13F
3/4/5
Lead comparable stake: 2.3%
13D/G row: PFIZER INC
Showing 1-6 of 15 holder rows.
Rank 1 holder
PFIZER INC
13D/G
13F
- Ownership
- 2.3%
- Position
- $994.4K
Rank 2 holder
BRISTOL MYERS SQUIBB CO
13D/G
- Ownership
- 1.6%
- Position
- $312.4K
Rank 3 holder
ORBIMED ADVISORS LLC
13F
3/4/5
- Ownership
- 9.4%
- Position
- $3.36M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PFIZER INC |
13D/G
13F
Pfizer Inc. (IRS Identification No.: 13-5315170) · Company
|
2.3%
|
$994,442
277,777 shares
|
$0 | 31 Dec 2024 |
| BRISTOL MYERS SQUIBB CO |
13D/G
|
1.6%
|
$312,381
200,244 shares
|
$0 | 31 Dec 2024 |
| ORBIMED ADVISORS LLC |
13F
3/4/5
Company · Director, 10%+ Owner
|
9.4%
|
$3,356,951
2,252,987 shares
|
— | 30 Jun 2025 |
| Atlas Venture Life Science Advisors, LLC |
13F
Company
|
8.7%
|
$3,117,238
2,092,106 shares
|
— | 30 Jun 2025 |
| Carlyle Group Inc. |
13F
Company
|
4.6%
|
$1,621,029
1,102,741 shares
|
— | 30 Jun 2025 |
| ACORN CAPITAL ADVISORS, LLC |
13F
Company
|
3.3%
|
$1,197,103
803,425 shares
|
— | 30 Jun 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 Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
52
Shares
8,428,600
Rows available
52
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* 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 failed the local validity check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
59
Q3 2025 holders
52
Holder diff
-7
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend