Korro Bio, Inc.

KRRO • NASDAQ

Korro Bio, Inc. is a biotechnology company in the healthcare sector on NASDAQ, led by Ram Aiyar, Ph.D., M.B.A., with a market cap of $77.5M. As of Q3 2025, 104% of shares are held by 90 institutional investors, with Atlas Venture Life Science Advisors, LLC as the largest holder at 12.11%.

President and Chief Executive OfficerRam Aiyar, Ph.D., M.B.A.

Market Cap$77.5M

Biotechnology

Healthcare

Employees101.0

Websitekorrobio.com

Country

United States of America

Overview

Overview of institutional ownership in KRRO as of Q3 2025 with a market cap of $449.7M

All Institutions

Institutions: 90
Value Held: $465.5M
Shares Held: 9.7M
Avg Position: $5.2M
Median Position: $445.5K

Hedge Funds

Hedge Funds: 21
Value Held: $142.2M
Shares Held: 3.0M
Avg Position: $6.8M
Median Position: $2.3M

Ownership Breakdown

Institutional (non-HF)

71.88%

$323.3M

Hedge Funds

31.63%

$142.2M

Retail & Other

Based on market cap of $449.7M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in KRRO as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
A Atlas Venture Life Science Advisors, LLC Institution	-	$54.5M 7.24% of portfolio	12.11% 1.1M shares	Q4 2023 Held for 1y 11m	$752.6M
NEA Management Company, LLC Venture Capital	Mohamad Hassan Makhzoumi CEO	$52.2M 2.87% of portfolio	11.62% 1.1M shares	Q4 2023 Held for 1y 11m	$1.8B
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven	Stephen Thomas Weber CEO	$32.2M 0.23% of portfolio	7.16% 672.0K shares	Q2 2024 Held for 1y 5m	$13.9B
FMR LLC Institution	-	$27.0M 0.00% of portfolio	6.00% 563.7K shares	Q4 2023 Held for 1y 11m	$1.92T
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	Steven Alan Cohen CEO	$25.5M 0.06% of portfolio	5.66% 532.0K shares	Q4 2023 Held for 1y 11m	$43.2B
C Cormorant Asset Management, LLC Hedge Fund•Long/Short	Bihua Chen CEO	$22.3M 1.73% of portfolio	4.95% 465.0K shares	Q4 2023 Held for 1y 11m	$1.3B
B BlackRock, Inc. Institution	-	$21.4M 0.00% of portfolio	4.76% 446.7K shares	Q3 2023 Held for 2y 2m	$5.67T
S Siren, L.L.C. Institution	-	$20.1M 0.84% of portfolio	4.46% 418.8K shares	Q3 2024 Held for 1y 2m	$2.4B
TCG Crossover Management, LLC Venture Capital	Chen Ming Yu Managing Partner	$19.9M 1.00% of portfolio	4.43% 416.3K shares	Q3 2025 Held for 2 months	$2.0B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$18.9M 0.00% of portfolio	4.21% 395.7K shares	Q3 2023 Held for 2y 2m	$6.69T

Net Capital Flow

Institutional buying and selling activity for KRRO in Q3 2025

Traded: +$50.1M
Buyers: 54
Sellers: 24
Total Bought: +$75.4M
Total Sold: −$25.3M
Avg Position: $4.8M

Biggest Buyers

Institution	Net Bought	Current Position
TCG Crossover Management, LLC Venture Capital	+$19.9M +416.3K shares	$19.9M 416.3K shares
T Tri Locum Partners LP Hedge Fund•Long/Short	+$9.5M +198.3K shares	$16.2M 337.8K shares
JPMORGAN CHASE & CO Institution	+$9.4M +196.1K shares	$9.5M 199.2K shares
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven	+$4.4M +91.1K shares	$32.2M 672.0K shares
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy	+$4.3M +90.2K shares	$4.3M 90.2K shares
MORGAN STANLEY RIA/Wealth	+$4.1M +85.8K shares	$8.0M 167.5K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	+$3.1M +65.6K shares	$7.1M 149.0K shares
EMERALD MUTUAL FUND ADVISERS TRUST Long Only Manager	+$2.8M +58.9K shares	$2.8M 58.9K shares
F/M Investments LLC ETF Provider	+$2.6M +55.2K shares	$2.6M 55.2K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$2.3M +48.4K shares	$2.3M 48.4K shares

Biggest Sellers

Institution	Net Sold	Current Position
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$9.4M −196.7K shares	$7.4M 153.9K shares
FMR LLC Institution	−$3.6M −75.5K shares	$27.0M 563.7K shares
Deep Track Capital, LP Hedge Fund•Long/Short	−$3.5M −278.0K shares	Sold Off 0 shares
Ally Bridge Group LLC Hedge Fund•Sector	−$1.9M −154.2K shares	Sold Off 0 shares
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	−$1.4M −28.6K shares	$1.9M 40.2K shares
S Standard Life Aberdeen plc Institution	−$1.3M −26.4K shares	$2.8M 58.0K shares
BANK OF AMERICA CORP /DE/ Institution	−$1.1M −23.5K shares	$225.3K 4.7K shares
B Blue Owl Capital Holdings LP Institution	−$957.8K −20.0K shares	$5.0M 105.0K shares
B BlackRock, Inc. Institution	−$727.5K −15.2K shares	$21.4M 446.7K shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	−$388.1K −8.1K shares	$25.5M 532.0K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited KRRO in Q3 2025

New Positions: 14
New Value: $30.0M
Exited Positions: 5
Exited Value: $5.9M

New Positions

Institution	Position Value
TCG Crossover Management, LLC Venture Capital	$19.9M 416.3K shares
EMERALD MUTUAL FUND ADVISERS TRUST Long Only Manager	$2.8M 58.9K shares
F/M Investments LLC ETF Provider	$2.6M 55.2K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	$2.3M 48.4K shares
EMERALD ADVISERS INC/PA Long Only Manager	$788.7K 16.5K shares
A AMERICAN CENTURY COMPANIES INC Institution	$419.4K 8.8K shares
ALGERT COLDIRON INVESTORS LLC Hedge Fund•Quant	$340.4K 7.1K shares
Quantinno Capital Management LP Hedge Fund•Market Neutral	$294.2K 6.1K shares
Wealth Forward, LLC RIA/Wealth	$239.9K 5.0K shares
SRS Capital Advisors, Inc. RIA/Wealth	$172.9K 3.6K shares

Exited Positions

Institution	Previous Position
Deep Track Capital, LP Hedge Fund•Long/Short	$3.5M 278.0K shares
Ally Bridge Group LLC Hedge Fund•Sector	$1.9M 154.2K shares
D D. E. Shaw & Co., Inc. Institution	$304.5K 24.4K shares
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$200.6K 16.1K shares
Rise Advisors, LLC RIA/Wealth	$362.0 29.0 shares

Options Activity

Institutions with the largest Call and Put options positions in KRRO as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with KRRO as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Q Qiming U.S. Ventures Management, LLC Institution	-	31.68% $17.6M	3.92% 368.1K shares	Q4 2023 Held for 1y 11m	$55.6M
7 72 Investment Holdings, LLC Institution	-	19.51% $13.3M	2.95% 276.8K shares	Q4 2023 Held for 1y 11m	$67.9M
A Atlas Venture Life Science Advisors, LLC Institution	-	7.24% $54.5M	12.11% 1.1M shares	Q4 2023 Held for 1y 11m	$752.6M
T Tri Locum Partners LP Hedge Fund•Long/Short	Prashanth Nmn Jayaram CIO	3.72% $16.2M	3.60% 337.8K shares	Q2 2024 Held for 1y 5m	$435.1M
NEA Management Company, LLC Venture Capital	Mohamad Hassan Makhzoumi CEO	2.87% $52.2M	11.62% 1.1M shares	Q4 2023 Held for 1y 11m	$1.8B
C Cormorant Asset Management, LLC Hedge Fund•Long/Short	Bihua Chen CEO	1.73% $22.3M	4.95% 465.0K shares	Q4 2023 Held for 1y 11m	$1.3B
B Blue Owl Capital Holdings LP Institution	-	1.58% $5.0M	1.12% 105.0K shares	Q2 2025 Held for 5 months	$318.8M
TCG Crossover Management, LLC Venture Capital	Chen Ming Yu Managing Partner	1.00% $19.9M	4.43% 416.3K shares	Q3 2025 Held for 2 months	$2.0B
S Siren, L.L.C. Institution	-	0.84% $20.1M	4.46% 418.8K shares	Q3 2024 Held for 1y 2m	$2.4B
D DAFNA Capital Management LLC Hedge Fund•Event Driven	Nathan Fischel CEO	0.73% $2.9M	0.65% 60.8K shares	Q1 2025 Held for 8 months	$397.7M

Hedge Fund Spotlight

Discover hedge funds investing in KRRO

ALGERT COLDIRON INVESTORS LLC

Hedge Fund • Quant

Portfolio ManagerRyan Zentner Lafond

Portfolio Value: $6.0B
Positions: 1,110
Last Reported: Q3 2025

Sector Allocation

Position in Korro Bio, Inc.

Market Value: $340.4K
Shares Held: 7.1K
Portfolio Weight: 0.01%
Owned Since: 2025-Q3

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