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Korro Bio
KRRO

70 hedge funds and large institutions have $115M invested in Korro Bio in 2025 Q2 according to their latest regulatory filings, with 10 funds opening new positions, 26 increasing their positions, 13 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more repeat investments, than reductions

Existing positions increased: 26 | Existing positions reduced: 13

0% more funds holding in top 10

Funds holding in top 10: 3 → 3 (0)

7% less funds holding

Funds holding: 75 → 70 (-5)

6.96% less ownership

Funds ownership: 103.35% → 96.4% (-7%)

32% less capital invested

Capital invested by funds: $169M → $115M (-$54.2M)

33% less first-time investments, than exits

New positions opened: 10 | Existing positions closed: 15

Holders
70
Holders Change
-5
Holders Change %
-6.67%
% of All Funds
0.92%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
10
Increased
26
Reduced
13
Closed
15
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$2.11M
2
BOCH
Blue Owl Capital Holdings
New York
+$1.8M
3
Citadel Advisors
Citadel Advisors
Florida
+$1.4M
4
ABG
Ally Bridge Group
New York
+$1.36M
5
CAM
Cormorant Asset Management
Massachusetts
+$1.22M

Top Sellers

Rank Fund Capital Flow
1
AllianceBernstein
AllianceBernstein
Tennessee
-$11.8M
2
DTC
Deep Track Capital
Connecticut
-$8.59M
3
Franklin Resources
Franklin Resources
California
-$1.6M
4
UBS Group
UBS Group
Switzerland
-$801K
5
SSA
Schonfeld Strategic Advisors
New York
-$531K
Name Holding Trade Value Shares
Change 		Change in
Stake
AVLSA
1
Atlas Venture Life Science Advisors
Massachusetts
$14.2M – – –
NMC
2
NEA Management Company
Maryland
$13.6M – – –
Fidelity Investments
3
Fidelity Investments
Massachusetts
$7.98M -$58.3K -4,047 -0.6%
DCM
4
Driehaus Capital Management
Illinois
$7.25M -$22.9K -1,590 -0.3%
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$6.75M +$276K +19,184 +4%
CAM
6
Cormorant Asset Management
Massachusetts
$5.81M +$1.22M +84,697 +22%
BlackRock
7
BlackRock
New York
$5.77M +$295K +20,459 +5%
SL
8
Siren LLC
Connecticut
$5.23M – – –
Vanguard Group
9
Vanguard Group
Pennsylvania
$4.83M +$71.1K +4,939 +1%
QUSVM
10
Qiming U.S. Ventures Management
Washington
$4.6M – – –
Citadel Advisors
11
Citadel Advisors
Florida
$4.38M +$1.4M +97,396 +38%
TLP
12
Tri Locum Partners
New York
$3.48M +$160K +11,112 +9%
DTC
13
Deep Track Capital
Connecticut
$3.47M -$8.59M -596,648 -68%
7IH
14
72 Investment Holdings
Connecticut
$3.46M – – –
Millennium Management
15
Millennium Management
New York
$3.19M +$2.11M +146,814 +135%
PCH
16
Polar Capital Holdings
United Kingdom
$3.12M – – –
Geode Capital Management
17
Geode Capital Management
Massachusetts
$1.94M +$218K +15,166 +11%
ABG
18
Ally Bridge Group
New York
$1.93M +$1.36M +94,500 +158%
BOCH
19
Blue Owl Capital Holdings
New York
$1.56M +$1.8M +125,000 New
State Street
20
State Street
Massachusetts
$1.52M -$7.17K -498 -0.4%
Aberdeen Group
21
Aberdeen Group
United Kingdom
$1.05M – – –
Raymond James Financial
22
Raymond James Financial
Florida
$1.04M +$938K +65,170 +358%
Morgan Stanley
23
Morgan Stanley
New York
$1.02M +$556K +38,633 +90%
ACM
24
ADAR1 Capital Management
Texas
$859K +$1.44K +100 +0.1%
Northern Trust
25
Northern Trust
Illinois
$723K -$4.94K -343 -0.6%
1
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KRRO Hedge Fund Activity: Q2 2025 in Review

70 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Korro Bio (KRRO) for Q2 2025, worth a combined $115M — down 32% from $169M a quarter earlier.

Sellers outnumbered buyers: 15 funds closed out of KRRO and 10 opened new positions — a net loss of 5 holders — while 13 trimmed existing stakes and 26 added.

The largest buyer was Millennium Management, adding an estimated $2.11M. The largest seller was AllianceBernstein, exiting entirely with an estimated $11.8M sold.

  • 70 institutional investors held Korro Bio (KRRO) as of Q2 2025, down from 75 in Q1 2025.
  • Funds reported $115M of Korro Bio stock for Q2 2025, down 32% quarter-over-quarter.
  • 10 funds opened new Korro Bio positions in Q2 2025 and 15 closed out, a net change of -5 holders.
  • The largest Korro Bio buyer in Q2 2025 was Millennium Management, an estimated $2.11M added.
  • The largest Korro Bio seller in Q2 2025 was AllianceBernstein, an estimated $11.8M sold.

Based on aggregated 13F filings for Q2 2025.