MARSHALL WACE, LLP

Position in PHAT — Phathom Pharmaceuticals, Inc.

CIK 1318757 LONDON, X0

Position in PHAT

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$7,227,076

-$2,335,212 QoQ

Shares Held

666,090

-22.6% QoQ

Ownership

0.823%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#24

of 161 holders

Holding Since

Dec 2020

12 quarters on record

Voting authority Sole 0% Shared 100% None 0%

Healthcare · as of Jun 30, 2026

MARSHALL WACE, LLP holds $3,055,517,440 across 267 Biotechnology names. PHAT ranks #82 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	543,897	$270,169,956
2	INCY	Incyte Corp	1,310,154	$148,519,056
3	RPRX	Royalty Pharma plc	2,450,669	$137,409,009
4	SYRE	Spyre Therapeutics, Inc.	991,693	$88,042,503
5	ALNY	Alnylam Pharmaceuticals, Inc.	259,799	$78,207,292
6	TVTX	Travere Therapeutics, Inc.	1,333,207	$75,739,488
7	MANE	Veradermics, Inc	585,560	$71,988,746
8	DFTX	Definium Therapeutics, Inc.	1,298,946	$61,102,419

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$7,227,076	666,090	-22.6%	Shares	Other	2026-08-13
2026-03-31	$9,562,288	860,692	+173.3%	Shares	Other	2026-05-15
2025-03-31	$1,974,253	314,873	+221.1%	Shares	Other	2025-05-15
2024-12-31	$796,311	98,068	-13.0%	Shares	Other	2025-02-13
2024-06-30	$1,160,717	112,691	+203.8%	Shares	Other	2024-08-14
2023-03-31	$264,865	37,096	-32.3%	Shares	Other	2023-05-15
2022-06-30	$462,250	54,769	+124.9%	Shares	Other	2022-08-15
2022-03-31	$331,430	24,352	-24.3%	Shares	Other	2022-05-16
2021-12-31	$632,685	32,165	+8.2%	Shares	Other	2022-02-14
2021-06-30	$1,006,394	29,731	-73.9%	Shares	Sole	2021-08-13
2021-03-31	$4,277,520	113,885	-4.0%	Shares	Sole	2021-05-17
2020-12-31	$3,941,519	118,649	—	Shares	Sole	2021-02-16
No filing history on record for this holder in this stock.