We are live on ! Find out more
QTTB icon

Q32 Bio
QTTB

53 hedge funds and large institutions have $16.6M invested in Q32 Bio in 2025 Q3 according to their latest regulatory filings, with 8 funds opening new positions, 10 increasing their positions, 18 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

25% more capital invested

Capital invested by funds: $13.4M → $16.6M (+$3.28M)

0% more funds holding in top 10

Funds holding in top 10: 4 → 4 (0)

4.51% less ownership

Funds ownership: 73.61% → 69.1% (-4.5%)

13% less funds holding

Funds holding: 61 → 53 (-8)

44% less repeat investments, than reductions

Existing positions increased: 10 | Existing positions reduced: 18

50% less first-time investments, than exits

New positions opened: 8 | Existing positions closed: 16

Holders
53
Holders Change
-8
Holders Change %
-13.11%
% of All Funds
0.7%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
8
Increased
10
Reduced
18
Closed
16
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Two Sigma Investments
Two Sigma Investments
New York
+$60.5K
2
Geode Capital Management
Geode Capital Management
Massachusetts
+$51.7K
3
Vanguard Group
Vanguard Group
Pennsylvania
+$49.9K
4
HF
HRT Financial
New York
+$28.5K
5
TSS
Two Sigma Securities
New York
+$26.4K

Top Sellers

Rank Fund Capital Flow
1
MAM
Monaco Asset Management
Monaco
-$540K
2
BlackRock
BlackRock
New York
-$165K
3
Goldman Sachs
Goldman Sachs
New York
-$94.7K
4
Jane Street
Jane Street
New York
-$69.5K
5
Renaissance Technologies
Renaissance Technologies
New York
-$57.1K
Name Holding Trade Value Shares
Change 		Change in
Stake
O
1
OrbiMed
New York
$4.46M – – –
AVLSA
2
Atlas Venture Life Science Advisors
Massachusetts
$4.14M – – –
CG
3
Carlyle Group
District of Columbia
$2.13M – – –
ACA
4
Acorn Capital Advisors
New York
$1.59M – – –
AVM
5
Arch Venture Management
Illinois
$635K – – –
MAM
6
Monaco Asset Management
Monaco
$616K -$540K -280,800 -47%
Vanguard Group
7
Vanguard Group
Pennsylvania
$585K +$49.9K +25,980 +10%
P
8
Pfizer
New York
$550K – – –
S
9
Sanofi
France
$483K – – –
TOCUITCONY
10
Trustees of Columbia University in the City of New York
New York
$265K – – –
Millennium Management
11
Millennium Management
New York
$207K -$49.2K -25,607 -20%
BlackRock
12
BlackRock
New York
$184K -$165K -85,672 -48%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$175K +$51.7K +26,897 +44%
Renaissance Technologies
14
Renaissance Technologies
New York
$93.7K -$57.1K -29,700 -39%
Northern Trust
15
Northern Trust
Illinois
$63.3K +$11.3K +5,895 +23%
Two Sigma Investments
16
Two Sigma Investments
New York
$62.4K +$60.5K +31,506 New
Acadian Asset Management
17
Acadian Asset Management
Massachusetts
$58K – – –
AAA
18
Affinity Asset Advisors
New York
$55K – – –
State Street
19
State Street
Massachusetts
$42K -$11K -5,700 -21%
Fidelity Investments
20
Fidelity Investments
Massachusetts
$31.4K -$51.1K -26,572 -63%
HF
21
HRT Financial
New York
$29K +$28.5K +14,836 New
TSS
22
Two Sigma Securities
New York
$27.2K +$26.4K +13,749 New
Morgan Stanley
23
Morgan Stanley
New York
$22.5K -$14K -7,305 -39%
DIM
24
DLK Investment Management
California
$20.5K – – –
Citadel Advisors
25
Citadel Advisors
Florida
$20K +$19.4K +10,117 New
1
2 3

QTTB Hedge Fund Activity: Q3 2025 in Review

53 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Q32 Bio (QTTB) for Q3 2025, worth a combined $16.6M — up 25% from $13.4M a quarter earlier.

Sellers outnumbered buyers: 16 funds closed out of QTTB and 8 opened new positions — a net loss of 8 holders — while 18 trimmed existing stakes and 10 added.

The largest buyer was Two Sigma Investments, opening a new position worth an estimated $60.5K. The largest seller was Monaco Asset Management, cutting an estimated $540K.

  • 53 institutional investors held Q32 Bio (QTTB) as of Q3 2025, down from 61 in Q2 2025.
  • Funds reported $16.6M of Q32 Bio stock for Q3 2025, up 25% quarter-over-quarter.
  • 8 funds opened new Q32 Bio positions in Q3 2025 and 16 closed out, a net change of -8 holders.
  • The largest Q32 Bio buyer in Q3 2025 was Two Sigma Investments, an estimated $60.5K added.
  • The largest Q32 Bio seller in Q3 2025 was Monaco Asset Management, an estimated $540K sold.

Based on aggregated 13F filings for Q3 2025.