MARSHALL WACE, LLP

Position in IOBTQ — IO Biotech, Inc.

CIK 1318757 LONDON, X0

Position in IOBTQ

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$17,776

-$243,690 QoQ

Shares Held

301,291

-29.8% QoQ

Ownership

0.419%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

of 12 holders

Holding Since

Sep 2023

11 quarters on record

Voting authority Sole 0% Shared 100% None 0%

Healthcare · as of Mar 31, 2026

MARSHALL WACE, LLP holds $2,756,303,735 across 280 Biotechnology names. IOBTQ ranks #280 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,099,318	$363,731,344
2	VRTX	Vertex Pharmaceuticals Inc / Ma	317,058	$141,579,078
3	INCY	Incyte Corp	1,253,138	$117,945,347
4	RPRX	Royalty Pharma plc	2,120,692	$101,729,594
5	RCUS	Arcus Biosciences, Inc.	3,761,437	$81,247,039
6	PTGX	Protagonist Therapeutics, Inc	628,075	$66,199,104
7	ROIV	Roivant Sciences Ltd.	2,246,943	$62,240,320
8	COGT	Cogent Biosciences, Inc.	1,600,168	$61,590,466

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$17,776	301,291	-29.8%	Shares	Other	2026-05-15
2025-12-31	$261,466	429,338	-59.2%	Shares	Other	2026-02-13
2025-09-30	$382,105	1,052,631	-50.0%	Shares	Other	2025-11-13
2025-06-30	$2,926,314	2,105,262	0.0%	Shares	Other	2025-08-13
2025-03-31	$2,294,734	2,105,262	0.0%	Shares	Other	2025-05-15
2024-12-31	$1,936,840	2,105,262	0.0%	Shares	Other	2025-02-13
2024-09-30	$2,210,524	2,105,262	0.0%	Shares	Other	2024-11-14
2024-06-30	$2,463,156	2,105,262	0.0%	Shares	Other	2024-08-14
2024-03-31	$3,642,102	2,105,262	0.0%	Shares	Other	2024-05-15
2023-12-31	$3,957,892	2,105,262	0.0%	Shares	Other	2024-02-14
2023-09-30	$2,968,418	2,105,262	—	Shares	Other	2023-11-14
No filing history on record for this holder in this stock.