CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in INSM — INSMED Inc

CIK 1081019 WEST SACRAMENTO, CA

Position in INSM

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$49,576,320

-$4,433,513 QoQ

Shares Held

303,182

-2.3% QoQ

Ownership

0.140%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Healthcare · as of Mar 31, 2026

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $884,195,299 across 222 Biotechnology names. INSM ranks #4 (5.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	373,481	$166,774,205
2	REGN	Regeneron Pharmaceuticals, Inc.	154,201	$119,141,860
3	ALNY	Alnylam Pharmaceuticals, Inc.	196,863	$65,136,060
4	INSM	INSMED Inc This page	303,182	$49,576,320
5	RPRX	Royalty Pharma plc	759,042	$36,411,244
6	INCY	Incyte Corp	241,287	$22,709,932
7	MRNA	Moderna, Inc.	407,190	$20,685,252
8	RVMD	Revolution Medicines, Inc.	165,277	$16,073,188

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$49,576,320	303,182	-2.3%	Shares	Sole	2026-05-18
2025-12-31	$54,009,833	310,330	+73.0%	Shares	Sole	2026-02-17
2025-09-30	$25,835,682	179,402	+3.4%	Shares	Sole	2025-11-14
2025-06-30	$17,463,958	173,529	+10.0%	Shares	Sole	2025-08-14
2025-03-31	$12,030,780	157,698	+2.8%	Shares	Sole	2025-05-15
2024-12-31	$10,586,800	153,343	+4.5%	Shares	Sole	2025-03-18
2024-09-30	$10,712,166	146,742	+5.8%	Shares	Sole	2025-04-04
2024-06-30	$9,295,178	138,734	+1.9%	Shares	Sole	2025-04-08
2024-03-31	$3,692,582	136,107	-5.8%	Shares	Sole	2024-05-16
2023-12-31	$4,475,916	144,431	-3.5%	Shares	Sole	2024-02-13
2023-09-30	$3,780,783	149,734	-8.6%	Shares	Sole	2023-11-14
2023-06-30	$3,458,268	163,899	-3.2%	Shares	Sole	2023-08-21
2023-03-31	$2,886,735	169,310	-0.6%	Shares	Sole	2023-05-09
2022-12-31	$3,402,993	170,320	+13.6%	Shares	Sole	2023-02-14
2022-09-30	$3,229,470	149,929	-1.6%	Shares	Sole	2022-11-21
2022-06-30	$3,005,426	152,405	+0.1%	Shares	Sole	2022-08-15
2022-03-31	$3,578,956	152,296	-5.7%	Shares	Sole	2022-05-16
2021-12-31	$4,398,388	161,468	+4.2%	Shares	Sole	2022-02-15
2021-09-30	$4,268,837	155,005	+8.9%	Shares	Sole	2021-11-15
2021-06-30	$4,050,199	142,312	-6.8%	Shares	Sole	2021-08-16
2021-03-31	$5,199,872	152,668	-0.4%	Shares	Sole	2021-05-18
2020-12-31	$5,102,358	153,270	+0.0%	Shares	Sole	2021-02-16
2020-09-30	$4,925,872	153,263	+0.4%	Shares	Sole	2020-11-17
2020-06-30	$4,203,953	152,649	+12.8%	Shares	Sole	2020-08-17
2020-03-31	$2,169,468	135,338	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.