CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in STRO — Sutro Biopharma, Inc.

CIK 884546 SAN FRANCISCO, CA

Position in STRO

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$1,636,826

+$1,373,353 QoQ

Shares Held

49,302

+366.1% QoQ

Ownership

0.297%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#41

of 97 holders

Holding Since

Mar 2020

23 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $7,346,663,053 across 299 Biotechnology names. STRO ranks #197 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	2,041,282	$1,013,966,007
2	REGN	Regeneron Pharmaceuticals, Inc.	846,306	$527,705,642
3	RVMD	Revolution Medicines, Inc.	1,917,025	$359,020,441
4	MRNA	Moderna, Inc.	4,838,884	$338,867,045
5	ALNY	Alnylam Pharmaceuticals, Inc.	755,377	$227,391,137
6	INCY	Incyte Corp	1,692,439	$191,854,884
7	RPRX	Royalty Pharma plc	3,083,528	$172,893,414
8	CYTK	Cytokinetics Inc	1,565,781	$133,388,883

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,636,826	49,302	+366.1%	Shares	Sole	2026-08-14
2026-03-31	$263,473	10,577	-94.7%	Shares	Sole	2026-05-15
2025-03-31	$129,935	199,901	-20.7%	Shares	Sole	2025-09-15
2024-12-31	$463,670	251,995	0.0%	Shares	Sole	2025-02-06
2024-09-30	$871,902	251,995	+16.2%	Shares	Sole	2024-11-12
2024-06-30	$635,306	216,828	+34.8%	Shares	Sole	2024-08-12
2024-03-31	$908,949	160,876	0.0%	Shares	Sole	2024-05-09
2023-12-31	$690,158	160,876	0.0%	Shares	Sole	2024-02-06
2023-09-30	$558,239	160,876	0.0%	Shares	Sole	2023-11-08
2023-06-30	$748,073	160,876	+10.2%	Shares	Sole	2023-08-10
2023-03-31	$674,242	145,940	+1.2%	Shares	Sole	2023-05-12
2022-12-31	$1,164,707	144,147	+9.9%	Shares	Sole	2023-02-13
2022-09-30	$728,187	131,205	+9.5%	Shares	Sole	2022-11-14
2022-06-30	$624,069	119,783	+0.1%	Shares	Sole	2022-08-15
2022-03-31	$983,662	119,667	+9.2%	Shares	Sole	2022-05-13
2021-12-31	$1,630,089	109,549	+1.6%	Shares	Sole	2022-02-11
2021-09-30	$2,037,720	107,873	+3.7%	Shares	Sole	2021-11-16
2021-06-30	$1,933,322	103,998	+27.8%	Shares	Sole	2021-08-16
2021-03-31	$1,852,618	81,398	+15.9%	Shares	Sole	2021-05-17
2020-12-31	$1,524,584	70,225	+6.6%	Shares	Sole	2021-02-16
2020-09-30	$661,882	65,859	+36.5%	Shares	Sole	2020-11-13
2020-06-30	$374,272	48,231	+113.5%	Shares	Sole	2020-08-20
2020-03-31	$230,438	22,592	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.