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OSS · One Stop Systems, Inc.

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$11.40 +0.00 (+0.00%) At close · Aug 21
Market Cap
$284.32M
Shares
24.94M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 110
Total Value: $239,131,034
Total Shares: 13,153,526

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 110 13F filers · Δ vs Mar 31, 2026
Top Holder
14.0%
Sep 2023 → Jun 2026 · range 10.9% – 39.5%
+3.0 pts
Top 5
48.6%
Sep 2023 → Jun 2026 · range 39.9% – 87.9%
+5.8 pts
Top 10
66.1%
Sep 2023 → Jun 2026 · range 59.6% – 96.8%
−0.3 pts
HHI
613
Sep 2023 → Jun 2026 · range 472 – 2,263
Broadly held+70

Quarterly Activity

vs Mar 31, 2026
New
51
Increased
30
Decreased
23
Sold Out
19
Unchanged
6
Holder count: +32
Institutional value: +239.4%
Shares held: +41.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 117
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1394056 CUSIP 68247W109 13F (30d) 101 filings 100 filers Visit website Investor relations