Sutro Biopharma, Inc.

STRO

Exchange: Nasdaq
Industry: Biological Products, (No Diagnostic Substances)
SEC CIK: 0001382101

SEC filings (opens in a new tab)

No open-market purchases or sales by Sutro Biopharma, Inc. insiders were filed in the last 90 days; 100 institutions reported holding it in 13F filings for Q2 2026, worth $545.7M in total; no superinvestor holds it.

Q3 2024 vs. Q2 2024

How the institutions holding Sutro Biopharma, Inc. changed between Q2 2024 and Q3 2024.

All holders in Q3 2024 All holders in Q2 2024

13F holders of STRO: Q2 2024 compared with Q3 2024
Measure	Q2 2024	Of which not filed for Q3 2024	Q3 2024	Change
Holders	119	2	130	+13
Shares	63.2M	7.14M	62.5M	+6.49M (+11.6%)
Value	$185.1M	$20.9M	$216.4M	+$52.2M (+31.8%)

2 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held Sutro Biopharma, Inc. at the end of Q3 2024 but not at the end of Q2 2024.

Institutions new to STRO in Q3 2024
Institution	Shares	Value	% of portfolio
BlackRock, Inc.	7,016,119	$24.3M	0.00%
Bank of Montreal	814,955	$2.85M	0.00%
Connor, Clark & Lunn Investment Management Ltd.	437,051	$1.51M	0.01%
Deerfield Management Company, L.P. (Series C)	359,919	$1.25M	0.02%
Omers Administration Corp	190,300	$658.4K	0.01%
EntryPoint Capital, LLC	40,985	$141.8K	0.08%
Marshall Wace, LLP	30,661	$106.1K	0.00%
Intech Investment Management LLC	26,336	$91.1K	0.00%
Virtu Financial LLC	22,305	$77.0K	0.00%
Graham Capital Management, L.P.	21,137	$73.1K	0.00%
Cerity Partners LLC	11,311	$39.1K	0.00%
PEAK6 Investments LLC	11,306	$39.1K	0.00%
Lazard Asset Management LLC	9,633	$33.0K	0.00%
Gladius Capital Management LP	8,084	$28.0K	0.02%
Global Retirement Partners, LLC	1,335	$4.62K	0.00%
Capital Performance Advisors LLP	896	$3.10K	0.00%
Bryn Mawr Trust Co	645	$2.23K	0.00%
True Wealth Design, LLC	318	$1.10K	0.00%
Quadrant Capital Group LLC	312	$1.08K	0.00%
Sterling Capital Management LLC	301	$1.04K	0.00%
Versant Capital Management, Inc	235	$813	0.00%
Smartleaf Asset Management LLC	222	$777	0.00%
Allspring Global Investments Holdings, LLC	15	$51	0.00%
Farther Finance Advisors, LLC	9	$31	0.00%

Sold out (11)

Institutions that held Sutro Biopharma, Inc. at the end of Q2 2024 and filed for Q3 2024 without it.

Institutions that sold out of STRO in Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
Gsa Capital Partners LLP	235,397	$690.0K
Tejara Capital Ltd	203,145	$595.2K
Verition Fund Management LLC	97,888	$286.8K
Hudson Bay Capital Management LP	60,761	$178.0K
Engineers Gate Manager LP	50,718	$148.6K
Nomura Holdings Inc	43,426	$127.2K
Dynamic Technology Lab Private Ltd	31,311	$92.0K
Cubist Systematic Strategies, LLC	16,463	$48.2K
Algert Global LLC	12,829	$37.6K
State of Wyoming	11,725	$34.4K
Principal Financial Group Inc	10,853	$31.8K

Not filed for Q3 2024 yet (2)

Institutions that held Sutro Biopharma, Inc. at the end of Q2 2024 and haven't filed a 13F for Q3 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding STRO in Q2 2024 that haven't filed for Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
BlackRock Inc.	6,910,730	$20.2M
Susquehanna Fundamental Investments, LLC	225,367	$660.3K