Korro Bio, Inc. - KRRO

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 3 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Atlas Venture Life Science Advisors, LLC History No change 1,137,149 9,108 1.05% 7.24% 1 0 0.0% Q4 2025 Feb 13, 2026
NEA Management Company, LLC History No change 1,090,793 8,737 0.45% 2.87% 2 0 0.0% Q4 2025 Feb 17, 2026
Lynx1 Capital Management LP History New 677,915 5,430 1.1% 3 +677,915 New Q4 2025 Feb 17, 2026
JANE STREET GROUP, LLC History New 604,357 4,840 0.0% 4 +604,357 New Q4 2025 Feb 12, 2026
Nantahala Capital Management, LLC History New 600,000 4,806 0.16% 5 +600,000 New Q4 2025 Feb 13, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History New 509,027 4,077 0.0% 6 +509,027 New Q4 2025 Feb 17, 2026
VANGUARD GROUP INC History Added to 489,639 3,922 0.0% 0.0% 7 +93,980 23.75% Q4 2025 Jan 29, 2026
BlackRock, Inc. History Added to 457,399 3,663 0.0% 0.0% 8 +10,701 2.4% Q4 2025 Feb 12, 2026
TCG Crossover Management, LLC History No change 416,301 3,334 0.11% 0.98% 9 0 0.0% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Added to 352,029 2,819 0.0% 0.0% 10 +198,101 128.7% Q4 2025 Feb 17, 2026
Siren, L.L.C. History Reduced 347,718 2,785 0.08% 0.78% 11 -71,115 -16.98% Q4 2025 Feb 13, 2026
72 Investment Holdings, LLC History No change 276,831 2,217 4.38% 19.51% 12 0 0.0% Q4 2025 Feb 17, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 162,760 1,303 0.0% 0.0% 13 -172 -0.11% Q4 2025 Feb 09, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 161,092 1,290 0.0% 0.01% 14 -99,241 -38.12% Q4 2025 Feb 17, 2026
STATE STREET CORP History Added to 146,221 1,171 0.0% 0.0% 15 +21,652 17.38% Q4 2025 Feb 13, 2026
SIMPLEX TRADING, LLC History New 106,347 851 0.0% 16 +106,347 New Q4 2025 Feb 11, 2026
TWO SIGMA INVESTMENTS, LP History Added to 78,984 632 0.0% 0.0% 17 +14,529 22.54% Q4 2025 Feb 17, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 74,900 599 0.0% 0.0% 18 +34,500 85.4% Q4 2025 Feb 12, 2026
MORGAN STANLEY History Reduced 69,728 558 0.0% 0.0% 19 -97,766 -58.37% Q4 2025 Feb 13, 2026
F/m Investments LLC History Added to 65,548 525 0.02% 0.1% 21 +10,303 18.65% Q4 2025 Feb 03, 2026
EMERALD MUTUAL FUND ADVISERS TRUST History Added to 65,548 525 0.03% 0.15% 20 +6,637 11.27% Q4 2025 Feb 09, 2026
XTX Topco Ltd History Added to 57,067 457 0.01% 22 +13,529 31.07% Q4 2025 Feb 17, 2026
NORTHERN TRUST CORP History Reduced 55,640 445 0.0% 0.0% 23 -1,633 -2.85% Q4 2025 Feb 17, 2026
GOLDMAN SACHS GROUP INC History Added to 51,950 416 0.0% 0.0% 24 +36,269 231.29% Q4 2025 Mar 25, 2026
Graham Capital Management, L.P. History New 40,766 326 0.01% 25 +40,766 New Q4 2025 Feb 17, 2026
AQR CAPITAL MANAGEMENT LLC History Reduced 40,647 325 0.0% 0.0% 26 -7,760 -16.03% Q4 2025 Feb 17, 2026
FMR LLC History Reduced 37,857 303 0.0% 0.0% 27 -525,824 -93.28% Q4 2025 Feb 17, 2026
ACADIAN ASSET MANAGEMENT LLC History New 33,790 270 0.0% 28 +33,790 New Q4 2025 Feb 10, 2026
AIHC Capital Management Ltd History New 30,265 242 0.23% 29 +30,265 New Q4 2025 Feb 05, 2026
Quantinno Capital Management LP History Added to 27,597 221 0.0% 0.0% 30 +21,454 349.24% Q4 2025 Feb 17, 2026
ALGERT GLOBAL LLC History Added to 27,065 217 0.0% 0.01% 31 +19,957 280.77% Q4 2025 Feb 17, 2026
Quadrature Capital Ltd History New 27,064 216 0.0% 32 +27,064 New Q4 2025 Feb 17, 2026
Engineers Gate Manager LP History New 26,885 215 0.0% 33 +26,885 New Q4 2025 Feb 17, 2026
RAYMOND JAMES FINANCIAL INC History Reduced 23,031 184 0.0% 0.0% 34 -125,940 -84.54% Q4 2025 Feb 18, 2026
UBS Group AG History Reduced 19,995 160 0.0% 0.0% 35 -33,108 -62.35% Q4 2025 Jan 29, 2026
MARSHALL WACE, LLP History New 19,772 158 0.0% 36 +19,772 New Q4 2025 Feb 13, 2026
Bank of New York Mellon Corp History Reduced 18,855 151 0.0% 0.0% 37 -458 -2.37% Q4 2025 Feb 10, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Reduced 16,329 130 0.0% 0.0% 38 -6,772 -29.31% Q4 2025 Feb 13, 2026
DEUTSCHE BANK AG\ History Added to 12,758 102 0.0% 0.0% 39 +9,027 241.95% Q4 2025 Feb 11, 2026
TWO SIGMA ADVISERS, LP History Reduced 11,237 90 0.0% 0.0% 40 -172 -1.51% Q4 2025 Feb 17, 2026
Jain Global LLC History New 10,574 84 0.0% 42 +10,574 New Q4 2025 Feb 17, 2026
AMERICAN CENTURY COMPANIES INC History Added to 10,590 84 0.0% 0.0% 41 +1,833 20.93% Q4 2025 Feb 13, 2026
GUGGENHEIM CAPITAL LLC History New 10,439 83 0.0% 43 +10,439 New Q4 2025 Feb 17, 2026
RHUMBLINE ADVISERS History Added to 10,250 82 0.0% 0.0% 44 +907 9.71% Q4 2025 Feb 13, 2026
GROUP ONE TRADING LLC History New 9,000 72 0.0% 45 +9,000 New Q4 2025 Feb 12, 2026
AlphaQuest LLC History Added to 7,703 61 0.0% 0.01% 46 +5,235 212.12% Q4 2025 Feb 09, 2026
WELLS FARGO & COMPANY/MN History Added to 7,522 60 0.0% 0.0% 47 +2,352 45.49% Q4 2025 Feb 13, 2026
BANK OF AMERICA CORP /DE/ History Added to 5,896 47 0.0% 0.0% 48 +1,192 25.34% Q4 2025 Feb 17, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 3,146 25 0.0% 0.0% 49 +8 0.25% Q4 2025 Feb 17, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 3,000 24 0.0% 0.0% 50 0 0.0% Q4 2025 Feb 12, 2026
JPMORGAN CHASE & CO History Reduced 2,838 22 0.0% 0.0% 51 -196,411 -98.58% Q4 2025 Feb 11, 2026
Russell Investments Group, Ltd. History Added to 1,930 15 0.0% 0.0% 52 +1,115 136.81% Q4 2025 Feb 17, 2026
North Star Investment Management Corp. History No change 1,800 14 0.0% 0.01% 53 0 0.0% Q4 2025 Jan 30, 2026
Steward Partners Investment Advisory, LLC History Reduced 1,500 12 0.0% 0.0% 54 -250 -14.29% Q4 2025 Feb 12, 2026
OSAIC HOLDINGS, INC. History Added to 1,417 11 0.0% 0.0% 57 +1,137 406.07% Q4 2025 Feb 17, 2026
Tower Research Capital LLC (TRC) History Added to 1,391 11 0.0% 0.0% 56 +353 34.01% Q4 2025 Feb 17, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 1,487 11 0.0% 0.0% 55 +173 13.17% Q4 2025 Feb 10, 2026
Police & Firemen's Retirement System of New Jersey History Reduced 1,373 10 0.0% 0.0% 58 -913 -39.94% Q4 2025 Feb 13, 2026
TD Waterhouse Canada Inc. History New 800 6 0.0% 59 +800 New Q4 2025 Jan 27, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Reduced 740 5 0.0% 0.0% 60 -2,174 -74.61% Q4 2025 Feb 06, 2026
CITIGROUP INC History Added to 607 4 0.0% 0.0% 62 +270 80.12% Q4 2025 Feb 13, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History New 110 4 0.0% 64 +110 New Q4 2025 Feb 11, 2026
Legal & General Group Plc History No change 526 4 0.0% 0.0% 61 0 0.0% Q4 2025 Feb 09, 2026
Ameritas Investment Partners, Inc. History No change 598 4 0.0% 0.0% 63 0 0.0% Q4 2025 Feb 11, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 408 3 0.0% 0.0% 66 -8 -1.92% Q4 2025 Feb 17, 2026
DUNCKER STREETT & CO INC History No change 437 3 0.0% 0.0% 65 0 0.0% Q4 2025 Jan 27, 2026
Sterling Capital Management LLC History No change 458 3 0.0% 0.0% 67 0 0.0% Q4 2025 Feb 13, 2026
CWM, LLC History Reduced 288 2 0.0% 0.0% 71 -2,405 -89.31% Q4 2025 Jan 26, 2026
FEDERATED HERMES, INC. History New 302 2 0.0% 70 +302 New Q4 2025 Feb 12, 2026
ROYAL BANK OF CANADA History New 224 2 0.0% 69 +224 New Q4 2025 Feb 17, 2026
AMALGAMATED BANK History Reduced 208 2 0.0% 0.0% 68 -3 -1.42% Q4 2025 Feb 05, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC History Closed out 0 0 0.23% -671,981 -100.0% Q3 2025 Nov 14, 2025
Point72 Asset Management, L.P. History Closed out 0 0 0.04% -531,969 -100.0% Q3 2025 Nov 14, 2025
Cormorant Asset Management, LP History Closed out 0 0 1.54% -465,000 -100.0% Q3 2025 Nov 14, 2025
Tri Locum Partners LP History Closed out 0 0 3.72% -337,764 -100.0% Q3 2025 Nov 14, 2025
Blue Owl Capital Holdings LP History Closed out 0 0 1.56% -105,000 -100.0% Q3 2025 Nov 12, 2025
Schonfeld Strategic Advisors LLC History Closed out 0 0 0.02% -90,186 -100.0% Q3 2025 Nov 14, 2025
DAFNA Capital Management LLC History Closed out 0 0 0.72% -60,804 -100.0% Q3 2025 Nov 14, 2025
Aberdeen Group plc History Closed out 0 0 0.0% -57,983 -100.0% Q3 2025 Nov 07, 2025
Woodline Partners LP History Closed out 0 0 0.01% -50,094 -100.0% Q3 2025 Nov 14, 2025
ADAR1 Capital Management, LLC History Closed out 0 0 0.18% -40,235 -100.0% Q3 2025 Nov 14, 2025
Trexquant Investment LP History Closed out 0 0 0.02% -38,260 -100.0% Q3 2025 Nov 14, 2025
Rock Springs Capital Management LP History Closed out 0 0 0.1% -35,719 -100.0% Q3 2025 Nov 14, 2025
ORBIMED ADVISORS LLC History Closed out 0 0 0.04% -32,400 -100.0% Q3 2025 Nov 14, 2025
Eversept Partners, LP History Closed out 0 0 0.07% -20,856 -100.0% Q3 2025 Nov 14, 2025
EMERALD ADVISERS, LLC History Closed out 0 0 0.03% -16,469 -100.0% Q3 2025 Oct 30, 2025
BLAIR WILLIAM & CO/IL History Closed out 0 0 0.0% -9,750 -100.0% Q3 2025 Nov 12, 2025
Nuveen, LLC History Closed out 0 0 0.0% -9,264 -100.0% Q3 2025 Nov 12, 2025
ALLIANCEBERNSTEIN L.P. History Closed out 0 0 0.0% -7,700 -100.0% Q3 2025 Nov 14, 2025
Wealth Forward, LLC History Closed out 0 0 0.14% -5,009 -100.0% Q3 2025 Nov 06, 2025
Quarry LP History Closed out 0 0 0.05% -4,375 -100.0% Q3 2025 Nov 14, 2025
MetLife Investment Management, LLC History Closed out 0 0 0.0% -3,945 -100.0% Q3 2025 Nov 13, 2025
Arax Advisory Partners History Closed out 0 0 0.0% -3,610 -100.0% Q3 2025 Nov 14, 2025
Versant Capital Management, Inc History Closed out 0 0 0.0% -271 -100.0% Q3 2025 Oct 27, 2025
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History New 91 0 +91 New Q4 2025 Feb 13, 2026
EverSource Wealth Advisors, LLC History Closed out 0 0 0.0% -89 -100.0% Q3 2025 Nov 10, 2025
NISA INVESTMENT ADVISORS, LLC History Closed out 0 0 0.0% -83 -100.0% Q3 2025 Oct 23, 2025
Wealthspire Advisors, LLC History Closed out 0 0 0.0% -65 -100.0% Q3 2025 Nov 14, 2025
Keating Financial Advisory Services, Inc. History New 63 0 +63 New Q4 2025 Feb 09, 2026
Global Retirement Partners, LLC History New 35 0 +35 New Q4 2025 Feb 06, 2026
True Wealth Design, LLC History Closed out 0 0 -19 -100.0% Q3 2025 Oct 21, 2025
Clearstead Advisors, LLC History Closed out 0 0 -18 -100.0% Q3 2025 Nov 10, 2025
GAMMA Investing LLC History Added to 102 0 0.0% +13 14.61% Q4 2025 Jan 05, 2026
ROTHSCHILD INVESTMENT LLC History New 6 0 +6 New Q4 2025 Feb 10, 2026
Allworth Financial LP History New 1 0 +1 New Q4 2025 Feb 05, 2026
Sunbelt Securities, Inc. History New 1 0 +1 New Q4 2025 Feb 20, 2026
MAI Capital Management History No change 5 0 0 0.0% Q4 2025 Feb 13, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History No change 2 0 0 0.0% Q4 2025 Feb 10, 2026
IFP Advisors, Inc History No change 40 0 0.0% 0 0.0% Q4 2025 Feb 06, 2026
SBI Securities Co., Ltd. History No change 1 0 0 0.0% Q4 2025 Feb 03, 2026
Optiver Holding B.V. History No change 116 0 0.0% 0 0.0% Q4 2025 Feb 17, 2026