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Korro Bio, Inc.

KRRO
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001703647

In the last 90 days, Korro Bio, Inc. insiders filed 1 open-market purchase and 8 sales; 106 institutions reported holding it in 13F filings for Q2 2026, worth $190.1M in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in Korro Bio, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
71
−4 vs. Q1 2025
Shares held
9.05M
−653.4K (−6.7%) vs. Q1 2025
Total value
$114.8M
−$54.2M (−32.1%) vs. Q1 2025
New holders
11
26 more added
Sold out
15
13 more reduced

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting KRRO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 71 institutions
Q1 2021: 115 institutionsQ2 2021: 91 institutionsQ3 2021: 88 institutionsQ4 2021: 84 institutionsQ1 2022: 86 institutionsQ2 2022: 58 institutionsQ3 2022: 55 institutionsQ4 2022: 50 institutionsQ1 2023: 43 institutionsQ2 2023: 41 institutionsQ3 2023: 42 institutionsQ4 2023: 40 institutionsQ1 2024: 49 institutionsQ2 2024: 64 institutionsQ3 2024: 71 institutionsQ4 2024: 84 institutionsQ1 2025: 75 institutionsQ2 2025: 71 institutionsQ3 2025: 92 institutionsQ4 2025: 83 institutionsQ1 2026: 99 institutionsQ2 2026: 106 institutions
Value heldQ2 2025: $114.8M
Q1 2021: $186.6MQ2 2021: $193.9MQ3 2021: $130.4MQ4 2021: $90.2MQ1 2022: $33.1MQ2 2022: $13.0MQ3 2022: $14.1MQ4 2022: $28.3MQ1 2023: $2.52MQ2 2023: $1.67MQ3 2023: $2.58MQ4 2023: $301.5MQ1 2024: $618.6MQ2 2024: $285.7MQ3 2024: $285.3MQ4 2024: $359.6MQ1 2025: $169.0MQ2 2025: $114.8MQ3 2025: $465.5MQ4 2025: $60.6MQ1 2026: $144.8MQ2 2026: $190.1M
Institutions holding KRRO and their total value by quarter
QuarterHoldersValue
Q2 2026106$190.1M
Q1 202699$144.8M
Q4 202583$60.6M
Q3 202592$465.5M
Q2 202571$114.8M
Q1 202575$169.0M
Q4 202484$359.6M
Q3 202471$285.3M
Q2 202464$285.7M
Q1 202449$618.6M
Q4 202340$301.5M
Q3 202342$2.58M
Q2 202341$1.67M
Q1 202343$2.52M
Q4 202250$28.3M
Q3 202255$14.1M
Q2 202258$13.0M
Q1 202286$33.1M
Q4 202184$90.2M
Q3 202188$130.4M
Q2 202191$193.9M
Q1 2021115$186.6M

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Korro Bio, Inc.; share changes are against Q1 2025.

Institutions holding KRRO in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Advisor Group Holdings, Inc.1$120.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co2$250.00%+2New
Essential Partners LLC3$370.00%+3New
MAI Capital Management5$630.00%00.0%Unchanged
IFP Advisors, Inc0$750.00%0New
SBI Securities Co., Ltd.7$870.00%00.0%Unchanged
EverSource Wealth Advisors, LLC22$2750.00%+22New
Rise Advisors, LLC29$3620.00%+29New
Nisa Investment Advisors, LLC30$3750.00%−301−90.9%Reduced
GAMMA Investing LLC66$8240.00%−527−88.9%Reduced
Sterling Capital Management LLC121$1.51K0.00%+39+47.6%Added
Amalgamated Bank211$3.00K0.00%00.0%Unchanged
Versant Capital Management, Inc282$3.52K0.00%+282New
Duncker Streett & Co Inc437$5.46K0.00%00.0%Unchanged
California State Teachers Retirement System442$5.52K0.00%00.0%Unchanged
Legal & General Group Plc526$6.57K0.00%−40−7.1%Reduced
CWM, LLC548$7.00K0.00%+507+1,236.6%Added
Ameritas Investment Partners, Inc.598$7.47K0.00%00.0%Unchanged
BNP Paribas Arbitrage, SA653$8.16K0.00%+280+75.1%Added
Steward Partners Investment Advisory, LLC1,150$14.4K0.00%+500+76.9%Added
Police & Firemen's Retirement System of New Jersey1,226$15.3K0.00%00.0%Unchanged
North Star Investment Management Corp.1,800$22.5K0.00%00.0%Unchanged
Citigroup Inc2,484$31.0K0.00%−2,347−48.6%Reduced
Tower Research Capital LLC (TRC)2,709$33.8K0.00%+1,945+254.6%Added
New York State Common Retirement Fund3,000$37.5K0.00%00.0%Unchanged
JPMorgan Chase & Co3,170$39.6K0.00%+101+3.3%Added
Mirae Asset Global ETFs Holdings Ltd.3,502$43.7K0.00%−156−4.3%Reduced
Deutsche Bank AG3,616$45.2K0.00%00.0%Unchanged
Wells Fargo & Company4,333$54.1K0.00%+540+14.2%Added
Quarry LP4,500$56.2K0.01%+2,489+123.8%Added
Royal Bank of Canada6,605$82.0K0.00%+508+8.3%Added
Rhumbline Advisers9,511$118.8K0.00%+442+4.9%Added
Walleye Capital LLC16,060$200.6K0.00%−14,895−48.1%Reduced
Bank of New York Mellon Corp16,522$206.4K0.00%+409+2.5%Added
Charles Schwab Investment Management Inc17,776$222.0K0.00%−512−2.8%Reduced
UBS Group AG18,581$232.1K0.00%−55,630−75.0%Reduced
Trexquant Investment LP20,870$260.7K0.00%+20,870New
D. E. Shaw & Co., Inc.24,383$304.5K0.00%+24,383New
Quest Partners LLC27,211$339.9K0.03%+18,015+195.9%Added
Bank of America Corp28,156$351.7K0.00%+23,615+520.0%Added
OrbiMed Advisors LLC32,400$404.7K0.01%00.0%Unchanged
Rock Springs Capital Management LP35,719$446.1K0.03%00.0%Unchanged
Two Sigma Investments, LP36,746$459.0K0.00%+36,746New
Renaissance Technologies LLC45,700$570.8K0.00%+45,700New
Woodline Partners LP50,094$625.7K0.00%00.0%Unchanged
DAFNA Capital Management LLC57,691$720.6K0.20%+10,605+22.5%Added
Northern Trust Corp57,868$722.8K0.00%−343−0.6%Reduced
ADAR1 Capital Management, LLC68,815$859.5K0.14%+100+0.1%Added
Morgan Stanley81,733$1.02M0.00%+38,633+89.6%Added
Raymond James Financial Inc83,392$1.04M0.00%+65,170+357.6%Added
Standard Life Aberdeen plc84,428$1.05M0.00%00.0%Unchanged
State Street Corp121,940$1.52M0.00%−498−0.4%Reduced
Blue Owl Capital Holdings LP125,000$1.56M0.50%+125,000New
Ally Bridge Group (NY) LLC154,223$1.93M1.60%+94,500+158.2%Added
Geode Capital Management, LLC155,387$1.94M0.00%+15,166+10.8%Added
Polar Capital Holdings Plc250,000$3.12M0.02%00.0%Unchanged
Millennium Management LLC255,683$3.19M0.00%+146,814+134.9%Added
72 Investment Holdings, LLC276,831$3.46M9.02%00.0%Unchanged
Deep Track Capital, LP277,966$3.47M0.11%−596,648−68.2%Reduced
Tri Locum Partners LP139,493$3.48M1.06%+11,112+8.7%Added
Citadel Advisors LLC350,646$4.38M0.00%+97,396+38.5%Added
Qiming U.S. Ventures Management, LLC368,085$4.60M19.47%00.0%Unchanged
Vanguard Group Inc386,738$4.83M0.00%+4,939+1.3%Added
Siren, L.L.C.418,833$5.23M0.27%00.0%Unchanged
BlackRock, Inc.461,889$5.77M0.00%+20,459+4.6%Added
Cormorant Asset Management, LP465,000$5.81M0.43%+84,697+22.3%Added
Point72 Asset Management, L.P.540,074$6.75M0.02%+19,184+3.7%Added
Driehaus Capital Management LLC580,859$7.25M0.06%−1,590−0.3%Reduced
FMR LLC639,222$7.98M0.00%−4,047−0.6%Reduced
NEA Management Company, LLC1,090,793$13.6M1.03%00.0%Unchanged
Atlas Venture Life Science Advisors, LLC1,137,149$14.2M2.14%00.0%Unchanged
Alliancebernstein L.P.0$00.00%−680,517−100.0%Sold out
Franklin Resources Inc0$00.00%−91,704−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−30,475−100.0%Sold out
Goldman Sachs Group Inc0$00.00%−20,944−100.0%Sold out
Blair William & Co0$00.00%−16,230−100.0%Sold out
Nuveen, LLC0$00.00%−12,145−100.0%Sold out
XTX Topco Ltd0$00.00%−10,600−100.0%Sold out
Susquehanna International Group, LLP0$00.00%−10,372−100.0%Sold out
Barclays PLC0$00.00%−7,241−100.0%Sold out
MetLife Investment Management0$00.00%−3,639−100.0%Sold out
Corebridge Financial, Inc.0$00.00%−3,019−100.0%Sold out
Federated Hermes, Inc.0$00.00%−64−100.0%Sold out
BNP Paribas0$00.00%−59−100.0%Sold out
Spire Wealth Management0$00.00%−39−100.0%Sold out
True Wealth Design, LLC0$00.00%−1−100.0%Sold out