OSS — ONE STOP SYS INC
Reported value held$111.41M
Funds holding (latest)26
SectorTechnology
Funds holding (Q2 2026)22
Institutional value$95.69M · 5.28M sh
New / Add / Cut / Exit7 / 10 / 5 / 1
Top-5 / Top-10 concentration82.3% / 93.2%
Institutional holdings change
Accumulating +40.1%
(+1.51M sh)
Institutional value change
Up +235.3%
As of Q2 2026, 22 SEC-registered investment managers reported holding OSS (ONE STOP SYS INC) in their latest 13F filings, with a combined reported value of $95.69M across 5.28M shares. That is +40.1% by share count (+1.51M shares) versus the previous quarter, while reported value moved +235.3%. Ownership is concentrated: the five largest holders account for 82.3% of reported value and the top ten for 93.2%.
Compared with the prior quarter, 7 opened new positions, 10 added to existing stakes, 5 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
OSS is classified in the Technology sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 22 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 1.84M | $33.41M | 0.00% | Add |
| Citadel Advisors history | 1.17M | $21.33M | 0.00% | Add |
| Geode Capital Management history | 572.92K | $10.42M | 0.00% | Add |
| Renaissance Technologies history | 407.86K | $7.41M | 0.01% | Add |
| Millennium Management history | 337.71K | $6.14M | 0.00% | Reduce |
| Northern Trust Corp history | 178.10K | $3.24M | 0.00% | Add |
| Two Sigma Investments history | 162.19K | $2.95M | 0.00% | New |
| Morgan Stanley history | 88.90K | $1.62M | 0.00% | Reduce |
| Goldman Sachs Group history | 75.31K | $1.37M | 0.00% | Reduce |
| UBS Group AG history | 72.18K | $1.31M | 0.00% | Reduce |
| Point72 Asset Management history | 69.60K | $1.27M | 0.00% | Add |
| Charles Schwab Investment Management history | 65.28K | $1.19M | 0.00% | Add |
| BNY Mellon history | 62.47K | $1.14M | 0.00% | New |
| Citigroup Inc history | 54.96K | $999.10K | 0.00% | Reduce |
| Bank of America Corp history | 32.15K | $584.50K | 0.00% | Add |
| Wells Fargo & Co history | 26.78K | $486.93K | 0.00% | Add |
| Deutsche Bank AG history | 22.35K | $406.29K | 0.00% | New |
| Invesco Ltd history | 12.21K | $221.96K | 0.00% | New |
| JPMorgan Chase & Co history | 9.31K | $154.44K | 0.00% | New |
| Legal & General Investment Management America history | 2.17K | $39.49K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 996 | $18.10K | 0.00% | Add |
| T. Rowe Price Associates history | 18.45K | $336 | 0.00% | New |
Q1 2026 — 16 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 744.98K | $5.64M | 0.00% | Add |
| BlackRock Inc history | 597.30K | $4.52M | 0.00% | Add |
| Morgan Stanley history | 431.92K | $3.27M | 0.00% | Add |
| Marshall Wace history | 418.98K | $3.17M | 0.00% | Add |
| UBS Group AG history | 407.01K | $3.08M | 0.00% | Add |
| Millennium Management history | 400.73K | $3.03M | 0.00% | Add |
| Renaissance Technologies history | 259.96K | $1.97M | 0.00% | Reduce |
| Geode Capital Management history | 252.45K | $1.91M | 0.00% | Add |
| Goldman Sachs Group history | 77.04K | $583.16K | 0.00% | Reduce |
| Citigroup Inc history | 75.69K | $572.96K | 0.00% | Add |
| Northern Trust Corp history | 46.97K | $355.59K | 0.00% | Add |
| Bank of America Corp history | 23.24K | $175.92K | 0.00% | Add |
| Point72 Asset Management history | 19.40K | $146.86K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 12.91K | $97.74K | 0.00% | Hold |
| Wells Fargo & Co history | 1.00K | $7.57K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 56 | $421 | 0.00% | New |
Q4 2025 — 19 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 1.05M | $7.57M | 0.00% | Add |
| Arrowstreet Capital history | 693.49K | $4.98M | 0.00% | Add |
| Citadel Advisors history | 388.38K | $2.79M | 0.00% | Reduce |
| Renaissance Technologies history | 375.70K | $2.70M | 0.00% | Reduce |
| Marshall Wace history | 273.94K | $1.97M | 0.00% | Reduce |
| Two Sigma Investments history | 253.29K | $1.82M | 0.00% | Add |
| Geode Capital Management history | 238.50K | $1.71M | 0.00% | Add |
| BlackRock Inc history | 137.44K | $986.85K | 0.00% | Add |
| Goldman Sachs Group history | 128.75K | $924.42K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 68.39K | $491.07K | 0.00% | New |
| Morgan Stanley history | 62.24K | $446.88K | 0.00% | Add |
| Point72 Asset Management history | 51.09K | $366.85K | 0.00% | New |
| Northern Trust Corp history | 41.92K | $301.01K | 0.00% | Add |
| Millennium Management history | 41.51K | $298.04K | 0.00% | Add |
| Charles Schwab Investment Management history | 12.91K | $92.70K | 0.00% | Hold |
| UBS Group AG history | 7.01K | $50.35K | 0.00% | Add |
| Citigroup Inc history | 4.53K | $32.50K | 0.00% | New |
| Wells Fargo & Co history | 1.00K | $7.18K | 0.00% | Hold |
| Bank of America Corp history | 18 | $129 | 0.00% | Reduce |
Q3 2025 — 16 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 963.44K | $5.16M | 0.00% | Add |
| Vanguard Group history | 872.70K | $4.68M | 0.00% | Add |
| Arrowstreet Capital history | 552.07K | $2.96M | 0.00% | New |
| Marshall Wace history | 501.17K | $2.69M | 0.00% | Add |
| Renaissance Technologies history | 393.16K | $2.11M | 0.00% | Add |
| Geode Capital Management history | 211.38K | $1.13M | 0.00% | Add |
| Two Sigma Investments history | 149.20K | $799.70K | 0.00% | New |
| Goldman Sachs Group history | 144.28K | $773.36K | 0.00% | Add |
| BlackRock Inc history | 93.74K | $502.45K | 0.00% | Add |
| Morgan Stanley history | 56.20K | $301.25K | 0.00% | Reduce |
| Northern Trust Corp history | 35.92K | $192.55K | 0.00% | Reduce |
| Millennium Management history | 20.99K | $112.48K | 0.00% | New |
| Charles Schwab Investment Management history | 12.91K | $69.20K | 0.00% | Hold |
| Bank of America Corp history | 2.75K | $14.72K | 0.00% | Reduce |
| UBS Group AG history | 1.90K | $10.16K | 0.00% | Reduce |
| Wells Fargo & Co history | 1.00K | $5.36K | 0.00% | Hold |
Q2 2025 — 14 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 743.22K | $2.64M | 0.00% | Add |
| Marshall Wace history | 476.39K | $1.69M | 0.00% | Add |
| Citadel Advisors history | 287.54K | $1.02M | 0.00% | Add |
| Geode Capital Management history | 199.73K | $709.20K | 0.00% | Add |
| Renaissance Technologies history | 101.86K | $361.60K | 0.00% | Add |
| BlackRock Inc history | 92.23K | $327.40K | 0.00% | Reduce |
| Morgan Stanley history | 72.50K | $257.39K | 0.00% | Add |
| Northern Trust Corp history | 44.29K | $157.23K | 0.00% | Add |
| Goldman Sachs Group history | 37.02K | $131.42K | 0.00% | Add |
| Charles Schwab Investment Management history | 12.91K | $45.83K | 0.00% | Hold |
| UBS Group AG history | 8.73K | $31.00K | 0.00% | Reduce |
| Bank of America Corp history | 5.02K | $17.81K | 0.00% | Add |
| Wells Fargo & Co history | 1.00K | $3.55K | 0.00% | Hold |
| Citigroup Inc history | 330 | $1.17K | 0.00% | New |
Q1 2025 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 734.16K | $1.70M | 0.00% | Add |
| Geode Capital Management history | 197.89K | $459.24K | 0.00% | Add |
| BlackRock Inc history | 94.59K | $219.46K | 0.00% | Hold |
| Renaissance Technologies history | 92.86K | $215.44K | 0.00% | Add |
| Citadel Advisors history | 57.83K | $134.17K | 0.00% | Reduce |
| Northern Trust Corp history | 39.66K | $92.01K | 0.00% | Add |
| Marshall Wace history | 38.73K | $89.85K | 0.00% | New |
| Morgan Stanley history | 32.30K | $74.94K | 0.00% | Add |
| Goldman Sachs Group history | 26.34K | $61.12K | 0.00% | Reduce |
| UBS Group AG history | 20.54K | $47.66K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 12.91K | $29.95K | 0.00% | Hold |
| JPMorgan Chase & Co history | 3.72K | $8.64K | 0.00% | Add |
| Wells Fargo & Co history | 1.00K | $2.32K | 0.00% | Hold |
| Bank of America Corp history | 151 | $350 | 0.00% | Add |
| Lazard Asset Management history | 845 | $1 | 0.00% | Add |
New Positions (Q2 2026)
- Two Sigma Investments 162.19K sh · $2.95M
- BNY Mellon 62.47K sh · $1.14M
- Deutsche Bank AG 22.35K sh · $406.29K
- Invesco Ltd 12.21K sh · $221.96K
- JPMorgan Chase & Co 9.31K sh · $154.44K
- Legal & General Investment Management America 2.17K sh · $39.49K
- T. Rowe Price Associates 18.45K sh · $336
Fully Exited (vs previous quarter)
- Marshall Wace sold 418.98K sh · $3.17M
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 1.84M | 597.30K | 137.44K | 93.74K | 92.23K | 94.59K | 94.47K | 94.18K | — | — | — | — | — | — | — | — | — | — | — | — |
| Citadel Advisors | 1.17M | 744.98K | 388.38K | 963.44K | 287.54K | 57.83K | 123.97K | 87.23K | 92.09K | 12.97K | 11.07K | — | 63.24K | 38.05K | — | 23.46K | — | 17.20K | 66.00K | 69.76K |
| Geode Capital Management | 572.92K | 252.45K | 238.50K | 211.38K | 199.73K | 197.89K | 190.22K | 181.95K | 170.69K | 161.43K | 151.01K | 151.01K | 159.60K | 120.81K | 120.81K | 118.68K | 118.17K | 114.58K | 110.96K | 110.96K |
| Renaissance Technologies | 407.86K | 259.96K | 375.70K | 393.16K | 101.86K | 92.86K | 69.90K | 66.90K | 61.20K | 52.90K | 43.20K | 38.50K | 52.60K | 64.51K | 62.31K | 89.37K | 132.06K | 247.70K | 421.58K | 336.10K |
| Millennium Management | 337.71K | 400.73K | 41.51K | 20.99K | — | — | 42.28K | — | 17.46K | — | — | — | — | — | — | — | 22.74K | 58.20K | 96.94K | 71.68K |
| Northern Trust Corp | 178.10K | 46.97K | 41.92K | 35.92K | 44.29K | 39.66K | 32.01K | 43.59K | 43.59K | 35.80K | 27.89K | 27.89K | 27.89K | 27.89K | 25.09K | 25.09K | 23.81K | 24.97K | 24.97K | 24.97K |
| Two Sigma Investments | 162.19K | — | 253.29K | 149.20K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10.38K | — |
| Morgan Stanley | 88.90K | 431.92K | 62.24K | 56.20K | 72.50K | 32.30K | 19.45K | 2.80K | 2.80K | 3.80K | 3.89K | 6.80K | 1.80K | 1.80K | 1.80K | 1.80K | 1.80K | 4.72K | 4.72K | 2.56K |
| Goldman Sachs Group | 75.31K | 77.04K | 128.75K | 144.28K | 37.02K | 26.34K | 28.59K | — | — | — | — | — | — | — | — | — | — | — | — | — |
| UBS Group AG | 72.18K | 407.01K | 7.01K | 1.90K | 8.73K | 20.54K | 25.59K | 15.30K | 26.08K | 3.60K | 306 | — | — | 3.21K | 5.36K | 4.67K | — | 2.69K | 4.25K | — |
| Point72 Asset Management | 69.60K | 19.40K | 51.09K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Charles Schwab Investment Management | 65.28K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | 12.91K | — | — | — | — |
| BNY Mellon | 62.47K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Citigroup Inc | 54.96K | 75.69K | 4.53K | — | 330 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Bank of America Corp | 32.15K | 23.24K | 18 | 2.75K | 5.02K | 151 | 144 | 145 | 145 | — | 20 | — | — | — | 34 | — | — | — | 10 | — |
| Wells Fargo & Co | 26.78K | 1.00K | 1.00K | 1.00K | 1.00K | 1.00K | 1.00K | 1.00K | 1.00K | 1.14K | 1.13K | 1.13K | 1.12K | 1.11K | 1.11K | 1.11K | 1.10K | 2.09K | 2.09K | 3.08K |
| Deutsche Bank AG | 22.35K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Invesco Ltd | 12.21K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| JPMorgan Chase & Co | 9.31K | — | 68.39K | — | — | 3.72K | 39 | 41 | 45 | 40 | 79 | 18 | — | — | — | — | — | 1.91K | 1.91K | — |
| Legal & General Investment Management America | 2.17K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details