One Stop Systems, Inc.

OSS

Exchange: Nasdaq
Industry: Electronic Computers
SEC CIK: 0001394056

SEC filings (opens in a new tab)

No open-market purchases or sales by One Stop Systems, Inc. insiders were filed in the last 90 days; 108 institutions reported holding it in 13F filings for Q2 2026, worth $193.4M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding One Stop Systems, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of OSS: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	69	1	77	+9
Shares	9.30M	1.05M	8.33M	+89.3K (+1.1%)
Value	$66.8M	$7.57M	$63.1M	+$3.92M (+6.6%)

1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (27)

Institutions that held One Stop Systems, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to OSS in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	959,588	$7.26M	0.00%
Vanguard Fiduciary Trust Co	128,759	$974.7K	0.00%
HRT Financial LP	79,005	$598.0K	0.00%
Mirae Asset Global ETFs Holdings Ltd.	73,865	$559.2K	0.00%
Eddie Patel Inc	67,059	$507.6K	0.39%
Oxford Asset Management LLP	64,403	$487.5K	0.20%
Virtu Financial LLC	61,458	$465.0K	0.02%
Stifel Financial Corp	37,913	$287.0K	0.00%
SG Americas Securities, LLC	28,022	$212.0K	0.00%
Mangrove Partners	23,889	$180.8K	0.01%
Apollon Wealth Management, LLC	21,040	$159.3K	0.00%
Landscape Capital Management, L.L.C.	17,269	$130.7K	0.01%
Anfield Capital Management, LLC	17,000	$128.7K	0.04%
RSM US Wealth Management LLC	11,306	$85.6K	0.00%
IMC-Chicago, LLC	11,187	$84.7K	0.00%
Strait & Sound Wealth Management LLC	11,044	$83.6K	0.03%
Vanguard Global Advisers, LLC	10,819	$81.9K	0.00%
Lodestone Wealth Management LLC	6,803	$51.5K	0.02%
Caitong International Asset Management Co., Ltd	3,632	$27.5K	0.01%
GWM Advisors LLC	3,020	$22.9K	0.00%
Advisory Services Network, LLC	2,341	$17.7K	0.00%
Hurley Capital, LLC	622	$4.71K	0.00%
MAI Capital Management	226	$1.71K	0.00%
Steward Partners Investment Advisory, LLC	200	$1.51K	0.00%
Jones Financial Companies LLLP	174	$1.33K	0.00%
Root Financial Partners, LLC	65	$492	0.00%
FMR LLC	56	$421	0.00%

Sold out (18)

Institutions that held One Stop Systems, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of OSS in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Arrowstreet Capital, Limited Partnership	693,493	$4.98M
Pacific Ridge Capital Partners, LLC	432,361	$3.10M
Archon Capital Management LLC	326,812	$2.35M
Two Sigma Investments, LP	253,294	$1.82M
Acadian Asset Management LLC	185,992	$1.33M
Manatuck Hill Partners, LLC	100,000	$718.0K
JPMorgan Chase & Co	68,394	$491.1K
Two Sigma Advisers, LP	55,500	$398.5K
Qube Research & Technologies Ltd	54,309	$389.9K
Belpointe Asset Management LLC	52,000	$373.4K
Point72 Asset Management, L.P.	51,093	$366.8K
Dimensional Fund Advisors LP	47,163	$338.6K
Legato Capital Management LLC	16,324	$117.2K
Umb Bank N A	15,300	$109.9K
Savant Capital, LLC	12,139	$87.2K
Lighthouse Investment Partners, LLC	10,560	$75.8K
FNY Investment Advisers, LLC	6,500	$46.0K
Simplex Trading, LLC	4,058	$29.1K

Not filed for Q1 2026 yet (1)

Institutions that held One Stop Systems, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding OSS in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	1,054,266	$7.57M