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One Stop Systems, Inc.
$13.91 -1.65 (-10.60%) At close · Jul 7
Market Cap
$344.54M
Shares
24,769,017

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: 78
Total Value: $70,461,452
Total Shares: 9,307,991

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 78 13F filers · Δ vs Dec 31, 2025
Top Holder
11.0%
Jun 2023 → Mar 2026 · range 10.9% – 39.5%
+0.1 pts
Top 5
42.8%
Jun 2023 → Mar 2026 · range 39.9% – 87.9%
+2.8 pts
Top 10
66.4%
Jun 2023 → Mar 2026 · range 59.6% – 96.8%
+6.8 pts
HHI
542
Jun 2023 → Mar 2026 · range 472 – 2,260
Broadly held+71

Quarterly Activity

vs Dec 31, 2025
New
27
Increased
23
Decreased
22
Sold Out
19
Unchanged
6
Holder count: +8
Institutional value: +1.3%
Shares held: -3.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega BlackRock, Inc. +459,859 597,303
Mega JANE STREET GROUP, LLC +418,953 1,022,758
Mega UBS Group AG +400,002 407,014
Mega MORGAN STANLEY +369,679 431,919
Mega MILLENNIUM MANAGEMENT LLC +359,219 400,729

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Small Lynrock Lake LP −665,252 666
Small BARD ASSOCIATES INC −310,192 540,666
Mega BNP PARIBAS ARBITRAGE, SA −226,340 1,996
Large RENAISSANCE TECHNOLOGIES LLC −115,741 259,960
Large Squarepoint Ops LLC −89,484 58,476

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 959,588 $7,264,081
Mega VANGUARD FIDUCIARY TRUST CO 128,759 $974,705
Large HRT FINANCIAL LP 79,005 $598,067
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 73,865 $559,158
Micro Eddie Patel Inc 67,059 $507,636

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 1,054,266 $7,569,628
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 693,493 $4,979,279
Small Pacific Ridge Capital Partners, LLC 432,361 $3,104,351
Small Archon Capital Management LLC 326,812 $2,346,510
Mega TWO SIGMA INVESTMENTS, LP 253,294 $1,818,650
Filter: New 27 Increased 23 Reduced 22 Sold out 19 Unchanged 6
Showing 84 of 84
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega VANGUARD CAPITAL MANAGEMENT LLC $7,264,081 10.31% 959,588
Mega JANE STREET GROUP, LLC $6,620,403 9.40% 874,558
Mega BlackRock, Inc. $4,521,583 6.42% 597,303
Small BARD ASSOCIATES INC $4,092,841 5.81% 540,666
Mega MORGAN STANLEY $3,269,625 4.64% 431,919
Large MARSHALL WACE, LLP $3,171,663 4.50% 418,978
Mega UBS Group AG $3,081,095 4.37% 407,014
Mega MILLENNIUM MANAGEMENT LLC $3,033,518 4.31% 400,729
Mega CITADEL ADVISORS LLC $2,700,036 3.83% 356,676
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,434,512 3.46% 321,600
Large RENAISSANCE TECHNOLOGIES LLC $1,967,897 2.79% 259,960
Large DNB Asset Management AS $1,913,188 2.72% 252,733
Mega GEODE CAPITAL MANAGEMENT, LLC $1,911,068 2.71% 252,453
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,788,783 2.54% 236,299
Large Trexquant Investment LP $1,648,965 2.34% 217,829
Mega CITADEL ADVISORS LLC $1,620,737 2.30% 214,100
Mega CITADEL ADVISORS LLC $1,318,694 1.87% 174,200
Large SEI INVESTMENTS CO $1,261,404 1.79% 166,632
Large Cambridge Investment Research Advisors, Inc. $1,102,373 1.56% 145,624
Small Informed Momentum Co LLC $1,029,436 1.46% 135,989
Mega JANE STREET GROUP, LLC $1,019,679 1.45% 134,700
Mega VANGUARD FIDUCIARY TRUST CO Bank $974,705 1.38% 128,759
Mega STATE STREET CORP $769,687 1.09% 101,676
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $737,318 1.05% 97,400
Mid THOMPSON SIEGEL & WALMSLEY LLC $734,009 1.04% 96,963
Large HRT FINANCIAL LP $598,067 0.85% 79,005
Mega GOLDMAN SACHS GROUP INC $583,162 0.83% 77,036
Mega CITIGROUP INC $572,958 0.81% 75,688
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $559,158 0.79% 73,865
Micro Eddie Patel Inc $507,636 0.72% 67,059
Small OXFORD ASSET MANAGEMENT LLP $487,530 0.69% 64,403
Mid Virtu Financial LLC $465,237 0.66% 61,458
Mid 683 Capital Management, LLC $454,200 0.64% 60,000
Large Squarepoint Ops LLC $442,663 0.63% 58,476
Mid XTX Topco Ltd $385,025 0.55% 50,862
Mega NORTHERN TRUST CORP Bank $355,593 0.50% 46,974
Small Penbrook Management LLC $353,821 0.50% 46,740
Mid Brevan Howard Capital Management LP $326,804 0.46% 43,171
Large STIFEL FINANCIAL CORP $287,001 0.41% 37,913
Large Hudson Bay Capital Management LP $282,936 0.40% 37,376
Small ESSEX INVESTMENT MANAGEMENT CO LLC $268,992 0.38% 35,534
Large Centiva Capital, LP $254,556 0.36% 33,627
Large Schonfeld Strategic Advisors LLC $223,163 0.32% 29,480
Mid Engineers Gate Manager LP $219,530 0.31% 29,000
Mid Hillsdale Investment Management Inc. $218,349 0.31% 28,844
Large SG Americas Securities, LLC Broker-Dealer $212,126 0.30% 28,022
Mid MANGROVE PARTNERS IM, LLC $180,839 0.26% 23,889
Mega BANK OF AMERICA CORP /DE/ Bank $175,919 0.25% 23,239
Mid Apollon Wealth Management, LLC $159,272 0.23% 21,040
Mega BARCLAYS PLC $155,207 0.22% 20,503
Small BAKER TILLY WEALTH MANAGEMENT, LLC $151,400 0.21% 20,000
Large Point72 Asset Management, L.P. $146,858 0.21% 19,400
Mid LANDSCAPE CAPITAL MANAGEMENT, L.L.C. $130,724 0.19% 17,269
Small Anfield Capital Management, LLC $128,690 0.18% 17,000
Large OMERS ADMINISTRATION Corp $115,064 0.16% 15,200
Mid OCCUDO QUANTITATIVE STRATEGIES LP $103,996 0.15% 13,738
Mega JANE STREET GROUP, LLC $102,195 0.15% 13,500
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $97,736 0.14% 12,911
Small McAdam, LLC $96,487 0.14% 12,746
Mid CHOREO, LLC $85,586 0.12% 11,306
Mid IMC-Chicago, LLC $84,685 0.12% 11,187
Small Strait & Sound Wealth Management LLC $83,603 0.12% 11,044
Mega Vanguard Global Advisers, LLC $81,899 0.12% 10,819
Small NKCFO LLC $75,700 0.11% 10,000
Small Lodestone Wealth Management LLC $51,498 0.07% 6,803
Mid Tower Research Capital LLC (TRC) $35,986 0.05% 4,754
Mid Smartleaf Asset Management LLC $30,280 0.04% 4,000
Small Caitong International Asset Management Co., Ltd $27,494 0.04% 3,632
Large NewEdge Advisors, LLC $22,861 0.03% 3,020
Mid Arax Advisory Partners $18,705 0.03% 2,471
Mid Advisory Services Network, LLC $17,721 0.03% 2,341
Mega BNP PARIBAS ARBITRAGE, SA $15,109 0.02% 1,996
Large OSAIC HOLDINGS, INC. $12,316 0.02% 1,627
Mega WELLS FARGO & COMPANY/MN $7,570 0.01% 1,000
Small Lynrock Lake LP $5,041 0.01% 666
Micro Hurley Capital, LLC $4,708 0.01% 622
Mega ROYAL BANK OF CANADA Bank $4,178 0.01% 552
Mid MAI Capital Management $1,710 0.00% 226
Large Steward Partners Investment Advisory, LLC $1,514 0.00% 200
Large JONES FINANCIAL COMPANIES LLLP $1,317 0.00% 174
Small Strive Financial Group ,LLC $757 0.00% 100
Small Root Financial Partners, LLC $492 0.00% 65
Mega FMR LLC $423 0.00% 56
Mid SBI Securities Co., Ltd. Broker-Dealer $105 0.00% 14
Key facts CIK 1394056 CUSIP 68247W109 Visit website Investor relations

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