We are live on ! Find out more
KRRO icon

Korro Bio
KRRO

75 hedge funds and large institutions have $169M invested in Korro Bio in 2025 Q1 according to their latest regulatory filings, with 9 funds opening new positions, 22 increasing their positions, 25 reducing their positions, and 18 closing their positions.

New
Increased
Maintained
Reduced
Closed

2.53% more ownership

Funds ownership: 100.82% → 103.35% (+2.5%)

0% more funds holding in top 10

Funds holding in top 10: 3 → 3 (0)

11% less funds holding

Funds holding: 84 → 75 (-9)

12% less repeat investments, than reductions

Existing positions increased: 22 | Existing positions reduced: 25

50% less first-time investments, than exits

New positions opened: 9 | Existing positions closed: 18

53% less capital invested

Capital invested by funds: $360M → $169M (-$191M)

Holders
75
Holders Change
-9
Holders Change %
-10.71%
% of All Funds
1.01%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
9
Increased
22
Reduced
25
Closed
18
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
CAM
Cormorant Asset Management
Massachusetts
+$11.3M
2
PCH
Polar Capital Holdings
United Kingdom
+$5.19M
3
DCM
Driehaus Capital Management
Illinois
+$2.6M
4
Aberdeen Group
Aberdeen Group
United Kingdom
+$2.5M
5
DCM
DAFNA Capital Management
California
+$1.4M

Top Sellers

1
EAM
Eventide Asset Management
Massachusetts
-$4.48M
2
Citadel Advisors
Citadel Advisors
Florida
-$3.45M
3
SSA
Schonfeld Strategic Advisors
New York
-$2.45M
4
Verition Fund Management
Verition Fund Management
Connecticut
-$2.36M
5
WP
Woodline Partners
California
-$1.54M
Name Holding Trade Value Shares
Change 		Change in
Stake
AVLSA
1
Atlas Venture Life Science Advisors
Massachusetts
$19.8M – – –
NMC
2
NEA Management Company
Maryland
$19M – – –
DTC
3
Deep Track Capital
Connecticut
$15.2M – – –
AllianceBernstein
4
AllianceBernstein
Tennessee
$11.8M -$749K -25,277 -4%
Fidelity Investments
5
Fidelity Investments
Massachusetts
$11.2M +$45.4K +1,530 +0.2%
DCM
6
Driehaus Capital Management
Illinois
$10.1M +$2.6M +87,544 +18%
Point72 Asset Management
7
Point72 Asset Management
Connecticut
$9.07M +$797K +26,893 +5%
BlackRock
8
BlackRock
New York
$7.69M -$327K -11,019 -2%
SL
9
Siren LLC
Connecticut
$7.29M – – –
Vanguard Group
10
Vanguard Group
Pennsylvania
$6.65M -$228K -7,691 -2%
CAM
11
Cormorant Asset Management
Massachusetts
$6.62M +$11.3M +380,303 New
QUSVM
12
Qiming U.S. Ventures Management
Washington
$6.41M – – –
7IH
13
72 Investment Holdings
Connecticut
$4.82M – – –
Citadel Advisors
14
Citadel Advisors
Florida
$4.41M -$3.45M -116,483 -32%
PCH
15
Polar Capital Holdings
United Kingdom
$4.35M +$5.19M +175,000 +233%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$2.44M +$92.9K +3,134 +2%
TLP
17
Tri Locum Partners
New York
$2.24M -$470K -15,835 -11%
State Street
18
State Street
Massachusetts
$2.13M -$48.7K -1,641 -1%
Millennium Management
19
Millennium Management
New York
$1.9M +$387K +13,061 +14%
Franklin Resources
20
Franklin Resources
California
$1.6M -$1.57K -53 -0.1%
Aberdeen Group
21
Aberdeen Group
United Kingdom
$1.47M +$2.5M +84,428 New
UBS Group
22
UBS Group
Switzerland
$1.29M +$34.8K +1,172 +2%
ACM
23
ADAR1 Capital Management
Texas
$1.2M +$318K +10,737 +19%
ABG
24
Ally Bridge Group
New York
$1.04M -$325K -10,955 -15%
Northern Trust
25
Northern Trust
Illinois
$1.01M -$69.3K -2,336 -4%
1
2 3 4

KRRO Hedge Fund Activity: Q1 2025 in Review

75 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Korro Bio (KRRO) for Q1 2025, worth a combined $169M — down 53% from $360M a quarter earlier.

Sellers outnumbered buyers: 18 funds closed out of KRRO and 9 opened new positions — a net loss of 9 holders — while 25 trimmed existing stakes and 22 added.

The largest buyer was Cormorant Asset Management, opening a new position worth an estimated $11.3M. The largest seller was Eventide Asset Management, exiting entirely with an estimated $4.48M sold.

  • 75 institutional investors held Korro Bio (KRRO) as of Q1 2025, down from 84 in Q4 2024.
  • Funds reported $169M of Korro Bio stock for Q1 2025, down 53% quarter-over-quarter.
  • 9 funds opened new Korro Bio positions in Q1 2025 and 18 closed out, a net change of -9 holders.
  • The largest Korro Bio buyer in Q1 2025 was Cormorant Asset Management, an estimated $11.3M added.
  • The largest Korro Bio seller in Q1 2025 was Eventide Asset Management, an estimated $4.48M sold.

Based on aggregated 13F filings for Q1 2025.