MORGAN STANLEY

Position in PRTA — Prothena Corp Public Ltd Co

CIK 895421 NEW YORK, NY

Back to PRTA Full portfolio

Position in PRTA

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

Position Value

$9,744,453

-$2,215,498 QoQ

Shares Held

995,348

-19.1% QoQ

Ownership

1.94%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#13

of 187 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 96% Shared 0% None 4%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MORGAN STANLEY holds $16,717,848,792 across 523 Biotechnology names. PRTA ranks #138 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RPRX	Royalty Pharma plc	42,931,597	$2,407,174,637
2	VRTX	Vertex Pharmaceuticals Inc / Ma	3,242,139	$1,610,467,694
3	ROIV	Roivant Sciences Ltd.	42,592,905	$1,507,362,901
4	REGN	Regeneron Pharmaceuticals, Inc.	1,397,712	$871,529,332
5	MRNA	Moderna, Inc.	9,538,094	$667,952,718
6	ARGX	Argenx SE	643,123	$596,670,219
7	TECH	BIO-TECHNE Corp	6,374,717	$450,373,747
8	INCY	Incyte Corp	2,948,364	$334,226,536

All Filings in PRTA

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$9,744,453	995,348	-19.1%	Shares	Defined	2026-08-13
2026-03-31	$11,959,951	1,230,448	-1.3%	Shares	Defined	2026-05-15
2025-12-31	$11,906,697	1,246,775	+55.9%	Shares	Defined	2026-05-27
2025-09-30	$7,804,814	799,674	-16.1%	Shares	Defined	2026-05-27
2025-06-30	$5,786,261	953,256	+32.4%	Shares	Defined	2025-08-15
2025-03-31	$8,909,847	719,988	+0.1%	Shares	Defined	2025-05-15
2024-12-31	$9,964,932	719,490	+0.0%	Shares	Defined	2025-05-15
2024-09-30	$12,033,667	719,287	-11.3%	Shares	Defined	2025-05-14
2024-06-30	$16,732,905	810,703	+24.3%	Shares	Defined	2025-05-14
2024-03-31	$16,161,629	652,468	+35.3%	Shares	Defined	2024-10-17
2023-12-31	$17,525,325	482,260	+79.4%	Shares	Defined	2024-08-16
2023-09-30	$12,972,492	268,860	+76.2%	Shares	Defined	2023-11-15
2023-06-30	$10,419,182	152,595	-46.4%	Shares	Defined	2023-08-14
2023-03-31	$13,809,438	284,907	+57.9%	Shares	Defined	2023-05-15
2022-12-31	$10,869,279	180,403	+8.4%	Shares	Defined	2023-02-14
2022-09-30	$10,094,830	166,499	-52.8%	Shares	Defined	2022-11-14
2022-06-30	$9,572,597	352,582	+0.9%	Shares	Defined	2022-10-27
2022-03-31	$12,781,980	349,521	+94.7%	Shares	Defined	2022-10-27
2021-12-31	$8,868,828	179,531	+188.7%	Shares	Defined	2022-02-14
2021-09-30	$4,429,079	62,180	+38.4%	Shares	Defined	2021-11-15
2021-06-30	$2,310,362	44,940	+214.8%	Shares	Defined	2021-08-23
2021-03-31	$358,586	14,275	-88.2%	Shares	Defined	2021-05-17
2020-12-31	$1,453,593	121,032	+37.1%	Shares	Defined	2021-02-16
2020-09-30	$881,946	88,283	-12.0%	Shares	Defined	2020-11-13
2020-06-30	$1,048,853	100,273	-5.9%	Shares	Defined	2020-08-14
2020-03-31	$1,140,309	106,571	—	Shares	Defined	2020-05-26
No filing history on record for this holder in this stock.