ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Position in ACIU — AC Immune SA

CIK 1164508 BOSTON, MA

Position in ACIU

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$1,115,559

-$63,897 QoQ

Shares Held

405,658

+8.0% QoQ

Ownership

0.399%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

9 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $1,767,735,657 across 48 Biotechnology names. ACIU ranks #44 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	638,950	$285,316,733
2	INCY	Incyte Corp	2,830,799	$266,434,801
3	EXEL	Exelixis, Inc.	4,834,625	$207,357,066
4	GMAB	Genmab A/S	4,975,324	$133,487,942
5	REGN	Regeneron Pharmaceuticals, Inc.	171,571	$132,562,617
6	HALO	Halozyme Therapeutics, Inc.	1,918,149	$123,969,969
7	RPRX	Royalty Pharma plc	2,010,398	$96,438,792
8	IONS	Ionis Pharmaceuticals Inc	737,859	$55,405,832

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,115,559	405,658	+8.0%	Shares	Defined	2026-05-14
2025-12-31	$1,179,456	375,623	+687.2%	Shares	Defined	2026-02-13
2021-09-30	$320,167	47,715	0.0%	Shares	Defined	2021-11-12
2021-06-30	$378,379	47,715	-62.8%	Shares	Defined	2021-08-13
2021-03-31	$974,825	128,098	+1.1%	Shares	Defined	2021-05-14
2020-12-31	$655,075	126,707	-37.2%	Shares	Defined	2021-02-12
2020-09-30	$985,364	201,919	+0.3%	Shares	Defined	2020-11-12
2020-06-30	$1,354,876	201,319	0.0%	Shares	Defined	2020-08-12
2020-03-31	$1,391,114	201,319	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.