ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Position in PBYI — Puma Biotechnology, Inc.

CIK 1164508 BOSTON, MA

Position in PBYI

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

Position Value

$3,438,810

+$179,085 QoQ

Shares Held

538,155

-1.8% QoQ

Ownership

1.06%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Mar 31, 2026

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $1,752,851,805 across 48 Biotechnology names. PBYI ranks #33 (0.2% 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

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,438,810	538,155	-1.8%	Shares	Defined	2026-05-14
2025-12-31	$3,259,725	547,853	+17.9%	Shares	Defined	2026-02-13
2025-09-30	$2,467,737	464,734	+2.9%	Shares	Defined	2025-11-13
2025-06-30	$1,549,101	451,633	+25.9%	Shares	Defined	2025-08-13
2025-03-31	$1,061,518	358,621	+289.1%	Shares	Defined	2025-05-14
2024-06-30	$300	92,174	-60.0%	Shares	Defined	2024-08-14
2024-03-31	$1,221	230,425	+185.1%	Shares	Defined	2024-05-15
2020-12-31	$829,243	80,823	-25.5%	Shares	Defined	2021-02-12
2020-09-30	$1,094,391	108,463	-78.5%	Shares	Defined	2020-11-12
2020-06-30	$5,258,461	504,167	+763.3%	Shares	Defined	2020-08-12
2020-03-31	$492,896	58,400	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.