DaveManuel.com · Institutional Ownership · Who Owns It
ONE STOP SYS INC (OSS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
114
Reporting holders
$256.4M
Reported value
43.4%
Of shares outstanding
11.1%
Calls
12.4%
Puts
+34
Holder change
Institutions report 10,814,076 shares against 24,940,130 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $33.4M | 1,837,840 | 0.00% | 8q | +207.7%+$22.6M |
| JANE STREET GROUP, LLC | $29.2M incl. $5.4M options CALL+PUT | 1,309,455 | 0.00% | 7q | +49.7%+$9.7M |
| CITADEL ADVISORS LLC | $21.3M incl. $20.0M options CALL+PUT | 71,202 | 0.00% | 11q | -80.0%-$85.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $17.7M | 974,568 | 0.00% | 2q | +1.6%+$272.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $14.6M CALL+PUT | options only | 0.00% | 13q | OPTIONS |
| GEODE CAPITAL MANAGEMENT, LLC | $10.4M | 572,918 | 0.00% | 28q | +126.9%+$5.8M |
| BARD ASSOCIATES INC | $9.6M | 526,370 | 2.12% | 28q | -2.6%-$259.9K |
| Palisades Investment Partners, LLC | $7.5M | 414,392 | 2.14% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $7.4M | 407,860 | 0.01% | 21q | +56.9%+$2.7M |
| IMC-Chicago, LLC | $7.2M CALL+PUT | options only | 0.00% | 3q | OPTIONS |
| STATE STREET CORP | $7.0M | 384,259 | 0.00% | 21q | +277.9%+$5.1M |
| MILLENNIUM MANAGEMENT LLC | $6.1M | 337,710 | 0.00% | 4q | -15.7%-$1.1M |
| Qube Research & Technologies Ltd | $5.8M | 318,919 | 0.01% | new | NEW |
| Cambridge Investment Research Advisors, Inc. | $5.4M | 298,584 | 0.01% | 3q | +105.0%+$2.8M |
| GROUP ONE TRADING LLC | $4.4M CALL+PUT | options only | 0.01% | 7q | OPTIONS |
| PEAK6 LLC | $3.6M CALL | options only | 0.01% | new | OPTIONS |
| NORTHERN TRUST CORP | $3.2M | 178,101 | 0.00% | 28q | +279.1%+$2.4M |
| SIMPLEX TRADING, LLC | $3.0M CALL+PUT | options only | 0.00% | 9q | OPTIONS |
| TWO SIGMA INVESTMENTS, LP | $2.9M | 162,193 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $2.9M | 157,365 | 0.00% | 2q | +22.2%+$520.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $2.8M | 155,408 | 0.00% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $2.7M | 147,343 | 0.00% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $2.7M | 146,871 | 0.00% | new | NEW |
| Squarepoint Ops LLC | $2.4M | 131,346 | 0.00% | 4q | +124.6%+$1.3M |
| Informed Momentum Co LLC | $2.4M | 130,568 | 0.21% | 5q | -4.0%-$98.6K |
| DNB Asset Management AS | $2.2M | 118,759 | 0.01% | 4q | -53.0%-$2.4M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $1.8M | 99,272 | 0.00% | 2q | +34.4%+$461.9K |
| Trexquant Investment LP | $1.8M | 98,442 | 0.01% | 4q | -54.8%-$2.2M |
| MORGAN STANLEY | $1.6M | 88,902 | 0.00% | 21q | -79.4%-$6.2M |
| OSAIC HOLDINGS, INC. | $1.6M | 86,513 | 0.00% | 5q | +5217.3%+$1.5M |
| SEI INVESTMENTS CO | $1.5M | 84,393 | 0.00% | 3q | -49.4%-$1.5M |
| GOLDMAN SACHS GROUP INC | $1.4M | 75,306 | 0.00% | 7q | -2.2%-$31.5K |
| Eddie Patel Inc | $1.3M | 72,895 | 0.79% | 2q | +8.7%+$106.1K |
| UBS Group AG | $1.3M | 72,184 | 0.00% | 11q | -82.3%-$6.1M |
| Point72 Asset Management, L.P. | $1.3M CALL+PUT | options only | 0.00% | 3q | OPTIONS |
| Russell Investments Group, Ltd. | $1.2M | 66,596 | 0.00% | new | NEW |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.2M | 65,276 | 0.00% | 16q | +405.6%+$952.0K |
| Bank of New York Mellon Corp | $1.1M | 62,473 | 0.00% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $1.1M | 61,924 | 0.00% | new | NEW |
| CITIGROUP INC | $999.1K | 54,956 | 0.00% | 3q | -27.4%-$376.9K |
| LPL Financial LLC | $985.8K | 54,225 | 0.00% | new | NEW |
| SG Americas Securities, LLC | $855.0K | 47,014 | 0.00% | 2q | +67.8%+$345.4K |
| LMR Partners LLP | $848.5K incl. $619.9K options PUT | 12,571 | 0.00% | new | NEW |
| Engineers Gate Manager LP | $758.7K | 41,732 | 0.01% | 4q | +43.9%+$231.5K |
| Penbrook Management LLC | $706.7K | 38,875 | 0.45% | 4q | -16.8%-$143.0K |
| Polymer Capital Management (HK) LTD | $690.8K | 38,000 | 0.03% | new | NEW |
| Inspire Investing, LLC | $690.2K | 37,967 | 0.03% | new | NEW |
| Nuveen, LLC | $660.1K | 36,308 | 0.00% | new | NEW |
| STIFEL FINANCIAL CORP | $598.5K | 32,920 | 0.00% | 2q | -13.2%-$90.8K |
| BANK OF AMERICA CORP /DE/ | $584.5K | 32,151 | 0.00% | 9q | +38.3%+$162.0K |
| Calamos Advisors LLC | $581.3K | 31,973 | 0.00% | new | NEW |
| THOMPSON SIEGEL & WALMSLEY LLC | $578.0K | 31,788 | 0.01% | 4q | -67.2%-$1.2M |
| Optimus Capital Advisors, LLC | $545.4K | 30,000 | 0.29% | new | NEW |
| RHUMBLINE ADVISERS | $506.7K | 27,871 | 0.00% | new | NEW |
| ACADIAN ASSET MANAGEMENT LLC | $495.0K | 27,282 | 0.00% | new | NEW |
| WELLS FARGO & COMPANY/MN | $486.9K | 26,784 | 0.00% | 22q | +2578.4%+$468.8K |
| CANTOR FITZGERALD, L. P. | $474.5K | 26,098 | 0.00% | new | NEW |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $466.8K | 25,674 | 0.06% | 26q | -27.7%-$179.3K |
| DEUTSCHE BANK AG\ | $406.3K | 22,348 | 0.00% | new | NEW |
| FOX RUN MANAGEMENT, L.L.C. | $403.7K | 22,208 | 0.07% | new | NEW |
| BAKER TILLY WEALTH MANAGEMENT, LLC | $363.6K | 20,000 | 0.08% | 12q | HELD |
| Lodestone Wealth Management LLC | $357.0K | 19,637 | 0.13% | 2q | +188.7%+$233.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $336.0K | 18,450 | 0.00% | new | NEW |
| OCCUDO QUANTITATIVE STRATEGIES LP | $329.4K | 18,117 | 0.02% | 4q | +31.9%+$79.6K |
| Caitong International Asset Management Co., Ltd | $315.2K | 17,337 | 0.04% | 2q | +377.3%+$249.2K |
| Apollon Wealth Management, LLC | $294.4K | 16,195 | 0.00% | 2q | -23.0%-$88.1K |
| State of Wyoming | $280.4K | 15,423 | 0.03% | new | NEW |
| BARCLAYS PLC | $266.9K | 14,679 | 0.00% | 4q | -28.4%-$105.9K |
| Clear Street Group Inc. | $259.1K | 14,250 | 0.00% | new | NEW |
| Cornerstone Investment Partners, LLC | $258.5K | 14,218 | 0.01% | new | NEW |
| Marex Group Ltd | $249.1K | 13,700 | 0.00% | new | NEW |
| MetLife Investment Management, LLC | $242.6K | 13,347 | 0.00% | new | NEW |
| Invesco Ltd. | $222.0K | 12,209 | 0.00% | new | NEW |
| McAdam, LLC | $221.8K | 12,198 | 0.01% | 3q | -4.3%-$10.0K |
| Brevan Howard Capital Management LP | $221.2K | 12,168 | 0.00% | 3q | -71.8%-$563.6K |
| Total Clarity Wealth Management, Inc. | $209.0K | 11,494 | 0.04% | new | NEW |
| Spark Investment Management LLC | $207.3K | 11,400 | 0.40% | new | NEW |
| Savant Capital, LLC | $206.0K | 16,000 | 0.00% | new | NEW |
| CHOREO, LLC | $205.5K | 11,306 | 0.00% | 2q | HELD |
| Connective Capital Management, LLC | $203.6K | 11,198 | 0.14% | new | NEW |
| HighTower Advisors, LLC | $188.4K | 10,365 | 0.00% | new | NEW |
| Strait & Sound Wealth Management LLC | $181.8K | 10,000 | 0.06% | 2q | -9.5%-$19.0K |
| JPMORGAN CHASE & CO | $154.4K | 9,315 | 0.00% | new | NEW |
| Vanguard Global Advisers, LLC | $143.3K | 7,884 | 0.00% | 2q | -27.1%-$53.4K |
| ALLIANCEBERNSTEIN L.P. | $127.4K | 16,830 | 0.00% | new | NEW |
| Police & Firemen's Retirement System of New Jersey | $120.5K | 6,627 | 0.00% | new | NEW |
| Quantbot Technologies LP | $110.6K | 6,082 | 0.00% | new | NEW |
| STRS OHIO | $80.0K | 4,400 | 0.00% | new | NEW |
| Global Retirement Partners, LLC | $72.7K | 4,000 | 0.00% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $70.9K | 3,899 | 0.00% | 3q | +95.3%+$34.6K |
| Smartleaf Asset Management LLC | $66.3K | 4,000 | 0.00% | 3q | HELD |
| NATIONAL BANK OF CANADA /FI/ | $63.6K | 3,500 | 0.00% | new | NEW |
| NewEdge Advisors, LLC | $45.5K | 2,500 | 0.00% | 2q | -17.2%-$9.5K |
| Legal & General Group Plc | $39.5K | 2,172 | 0.00% | new | NEW |
| Ameritas Investment Partners, Inc. | $37.1K | 2,039 | 0.00% | new | NEW |
| Farther Finance Advisors, LLC | $27.3K | 1,500 | 0.00% | new | NEW |
| SBI Securities Co., Ltd. | $24.9K | 1,372 | 0.00% | 7q | +9700.0%+$24.7K |
| Tower Research Capital LLC (TRC) | $24.4K | 1,340 | 0.00% | 10q | -71.8%-$62.1K |
| ROYAL BANK OF CANADA | $24.0K | 1,315 | 0.00% | 3q | +138.2%+$13.9K |
| JONES FINANCIAL COMPANIES LLLP | $23.8K | 1,465 | 0.00% | 2q | +742.0%+$21.0K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-09 | 13G/A | Galkin Vladimir INDIVIDUALwith 2 co-filers | 0.8% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-28 | 2026-10-28 | Material agreement entered | filing |
| 2026-08-05 | 2026-07-31 | Directors or officers departed or appointed Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-26 | BASSETT DAVID GEORGE | Director | Sold | 8,000 | $141.1K |
| 2026-05-26 | Matz Gregory W | Director | Sold | 8,000 | $140.2K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 18 | $1.1M | 127,292 | 8 | 3 | 3 | 0.0% |
| Q2 2026 | 114 | $256.4M | 10,814,076 | 52 | 27 | 25 | 23.4% |
| Q1 2026 | 80 | $75.8M | 8,333,091 | 25 | 22 | 22 | 16.8% |
| Q4 2025 | 72 | $71.0M | 9,298,038 | 24 | 24 | 16 | 6.0% |
| Q3 2025 | 60 | $53.5M | 9,714,788 | 26 | 17 | 12 | 2.7% |
| Q2 2025 | 39 | $23.6M | 6,432,455 | 10 | 13 | 11 | 3.3% |
| Q1 2025 | 33 | $12.5M | 5,322,190 | 4 | 15 | 6 | 1.3% |
| Q4 2024 | 37 | $18.0M | 5,275,157 | 12 | 10 | 8 | 1.8% |
| Q3 2024 | 27 | $12.3M | 5,064,262 | 1 | 7 | 8 | 1.7% |
| Q2 2024 | 34 | $13.4M | 5,482,379 | 11 | 11 | 6 | 1.7% |
| Q1 2024 | 26 | $18.0M | 5,431,464 | 5 | 8 | 7 | 1.7% |
| Q4 2023 | 28 | $11.9M | 5,634,415 | 4 | 5 | 7 | 0.2% |
| Q3 2023 | 26 | $10.4M | 5,575,911 | 5 | 7 | 6 | 0.7% |
| Q2 2023 | 28 | $16.8M | 5,799,779 | 7 | 6 | 5 | 1.2% |
| Q1 2023 | 27 | $14.5M | 5,846,509 | 3 | 7 | 3 | 0.1% |
| Q4 2022 | 27 | $16.8M | 5,570,143 | 3 | 9 | 2 | 0.4% |
| Q3 2022 | 28 | $17.2M | 5,311,920 | 5 | 4 | 4 | 1.1% |
| Q2 2022 | 24 | $20.5M | 5,154,686 | 0 | 8 | 8 | 1.0% |
| Q1 2022 | 31 | $18.2M | 4,666,774 | 5 | 8 | 5 | 2.0% |
| Q4 2021 | 35 | $67.4M | 13,488,814 | 6 | 8 | 7 | 1.0% |
| Q3 2021 | 32 | $22.7M | 4,449,836 | 3 | 7 | 9 | 1.5% |
| Q2 2021 | 35 | $25.5M | 4,349,624 | 9 | 9 | 8 | 1.4% |
| Q1 2021 | 35 | $24.7M | 3,898,393 | 13 | 9 | 9 | 0.0% |
| Q4 2020 | 25 | $18.7M | 4,668,135 | 6 | 6 | 7 | 0.0% |
| Q3 2020 | 20 | $9.3M | 4,416,072 | 5 | 5 | 2 | 0.0% |
| Q2 2020 | 16 | $8.5M | 4,240,801 | 0 | 3 | 3 | 0.0% |
| Q1 2020 | 24 | $7.6M | 5,292,025 | 6 | 7 | 5 | 0.0% |
| Q4 2019 | 19 | $10.1M | 4,970,895 | 5 | 5 | 3 | 0.0% |
| Q3 2019 | 19 | $12.6M | 4,265,170 | 8 | 5 | 4 | 0.0% |
| Q2 2019 | 12 | $4.4M | 2,606,978 | 2 | 4 | 3 | 0.0% |
| Q1 2019 | 11 | $6.1M | 2,966,395 | 2 | 5 | 1 | 0.0% |
| Q4 2018 | 12 | $4.8M | 2,471,838 | 0 | 0 | 0 | 0.0% |