FMR LLC

Position in ATYR — aTYR PHARMA INC

CIK 315066 BOSTON, MA

Back to ATYR Full portfolio

Position in ATYR

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

Position Value

$11,471,337

-$37,192 QoQ

Shares Held

14,706,843

+0.1% QoQ

Ownership

15.0%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

of 109 holders

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 99.93912357669149.ToString("F0")% Shared 0.ToString("F0")% None 0.060876423308523796.ToString("F0")%

Common Shares in ATYR Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

FMR LLC holds $49,683,576,696 across 351 Biotechnology names. ATYR ranks #143 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	14,579,166	$4,823,808,652
2	ARGX	Argenx SE	4,991,034	$3,644,702,577
3	MRNA	Moderna, Inc.	45,672,024	$2,320,138,818
4	ROIV	Roivant Sciences Ltd.	77,981,253	$2,160,080,705
5	INSM	INSMED Inc	13,160,167	$2,151,950,504
6	IONS	Ionis Pharmaceuticals Inc	24,556,637	$1,843,957,869
7	RPRX	Royalty Pharma plc	25,152,242	$1,206,553,046
8	REGN	Regeneron Pharmaceuticals, Inc.	1,518,192	$1,173,015,865

All Filings in ATYR

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$11,471,337	14,706,843	+0.1%	Shares	Defined	2026-05-15
2025-12-31	$11,508,529	14,697,995	0.0%	Shares	Defined	2026-02-17
2025-09-30	$10,597,253	14,697,995	+10.1%	Shares	Defined	2025-11-13
2025-06-30	$67,687,870	13,350,665	+3.5%	Shares	Defined	2025-08-14
2025-03-31	$38,938,456	12,893,529	+6.6%	Shares	Defined	2025-05-12
2024-12-31	$43,792,692	12,097,429	+6.4%	Shares	Defined	2025-02-13
2024-09-30	$20,010,194	11,369,429	+9.8%	Shares	Defined	2024-11-13
2024-06-30	$16,148,559	10,351,641	+16.0%	Shares	Defined	2024-08-13
2024-03-31	$17,400,259	8,923,210	+1.6%	Shares	Defined	2024-05-13
2023-12-31	$12,385,452	8,784,009	+2.7%	Shares	Defined	2024-02-13
2023-09-30	$13,519,941	8,556,925	+5.1%	Shares	Defined	2023-11-13
2023-06-30	$17,590,527	8,143,763	+2.1%	Shares	Defined	2023-08-11
2023-03-31	$16,746,044	7,974,307	+83.3%	Shares	Defined	2023-08-11
2022-12-31	$9,529,580	4,351,407	+1.3%	Shares	Defined	2023-02-13
2022-09-30	$12,881,268	4,293,756	+2.0%	Shares	Defined	2022-11-10
2022-06-30	$11,909,876	4,208,437	+0.9%	Shares	Defined	2022-08-12
2022-03-31	$22,306,124	4,169,369	+0.0%	Shares	Defined	2022-05-13
2021-12-31	$31,139,449	4,168,601	+2.6%	Shares	Defined	2022-02-14
2021-09-30	$36,894,699	4,063,293	+142.5%	Shares	Defined	2022-02-14
2021-06-30	$8,178,294	1,675,880	+5.8%	Shares	Defined	2021-08-13
2021-03-31	$7,051,843	1,584,684	+3.7%	Shares	Defined	2021-05-14
2020-12-31	$5,927,933	1,527,818	+8.9%	Shares	Defined	2021-02-08
2020-09-30	$4,531,283	1,402,874	0.0%	Shares	Defined	2020-11-13
2020-06-30	$6,228,760	1,402,874	0.0%	Shares	Defined	2020-08-24
2020-03-31	$3,928,047	1,402,874	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.