JANE STREET GROUP, LLC

Position in KRRO — Korro Bio, Inc.

CIK 1595888 NEW YORK, NY

Back to KRRO Full portfolio

Position in KRRO

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$1,309,768

-$1,000,771 QoQ

Shares Held

115,704

-59.9% QoQ

Ownership

0.786%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2023

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in KRRO Over Time

Shares Held

Position Value (USD)

Derivatives in KRRO

reported options exposure · as of Mar 31, 2026

CallValue

CallShares

PutValue

$484,496

PutShares

42,800

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $1,363,996,810 across 291 Biotechnology names.

#	Ticker	Company	Shares	Value (USD)
1	BBIO	BridgeBio Pharma, Inc.	2,934,193	$218,538,693
2	MDGL	Madrigal Pharmaceuticals, Inc.	191,541	$102,847,939
3	AXSM	Axsome Therapeutics, Inc.	403,995	$98,885,855
4	TGTX	Tg Therapeutics, Inc.	1,752,646	$96,290,370
5	EXEL	Exelixis, Inc.	1,402,438	$76,306,651
6	QURE	uniQure N.V.	1,610,483	$74,178,846
7	HALO	Halozyme Therapeutics, Inc.	694,684	$54,372,915
8	TVTX	Travere Therapeutics, Inc.	938,699	$53,327,489

All Filings in KRRO

Export CSV

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,309,768	115,704	-59.9%	Shares	Defined	2026-05-12
2026-03-31	$484,496	42,800	-86.5%	Put	Defined	2026-05-12
2025-12-31	$2,530,359	315,900	—	Put	Defined	2026-02-12
2025-12-31	$2,310,539	288,457	+3693.5%	Shares	Defined	2026-02-12
2024-12-31	$289,484	7,604	-70.5%	Shares	Defined	2025-02-14
2024-03-31	$2,323,260	25,814	+250.5%	Shares	Defined	2024-05-16
2023-12-31	$353,004	7,365	—	Shares	Defined	2024-02-15
No filing history on record for this holder in this stock.