OSS ONE STOP SYS INC
FollowCOMMON STOCK (common), issuer CIK 1394056
34 managers (34 13F filers) reported a position in OSS shares at 2025-03-31, 5,322,190 shares in all. 4 filers opened a position and 8 filers sold out during the quarter.
- Managers
- 34
- 13F filers
- 34
- New
- 4
- Added
- 16
- Reduced
- 7
- Sold out
- 8
- Shares held by filers
- 5,322,190
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.
- Galkin Vladimir (group Galkin Vladimir)
200,000 shares, 0.8% in a 13G/A as of 2026-10-07,0001376474-26-000639
Accepted , ingested
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q1 2025
Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Lynrock Lake LP | 2,066,666 | $4.79M | 0.46% | 0 | 13F-HRTimeline |
| BARD ASSOCIATES INC | 1,029,780 | $2.39M | 0.89% | -14,917 | 13F-HRTimeline |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 734,162 | $1.7M | <0.01% | +35,063 | 13F-HRTimelineGroup |
| Pacific Ridge Capital Partners, LLC | 461,138 | $1.07M | 0.28% | -22,361 | 13F-HRTimeline |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 197,892 | $459K | <0.01% | +7,675 | 13F-HRTimelineGroup |
| Archon Capital Management LLC | 153,098 | $355K | 0.37% | new | 13F-HRTimeline |
| BlackRock, Inc.in group BlackRock, Inc. | 94,595 | $219K | <0.01% | +127 | 13F-HRTimelineGroup |
| RENAISSANCE TECHNOLOGIES LLC | 92,860 | $215K | <0.01% | +22,960 | 13F-HRTimeline |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 73,643 | $171K | 0.04% | -152 | 13F-HRTimeline |
| STATE STREET CORPin group STATE STREET CORP | 65,876 | $153K | <0.01% | +8,100 | 13F-HRTimelineGroup |
| NORTHERN TRUST CORPin group NORTHERN TRUST CORP | 39,659 | $92K | <0.01% | +7,653 | 13F-HRTimelineGroup |
| MARSHALL WACE, LLPin group MARSHALL WACE, LLP | 38,729 | $89.9K | <0.01% | new | 13F-HRTimelineGroup |
| DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP | 34,894 | $81K | <0.01% | +7,539 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 32,303 | $74.9K | <0.01% | +12,850 | 13F-HRTimelineGroup |
| CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC | 30,431 | $70.6K | <0.01% | -66,642 | 13F-HRTimelineGroup |
| GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC | 26,343 | $61.1K | <0.01% | -2,249 | 13F-HR/ATimelineGroup |
| UBS Group AGin group UBS Group AG | 20,542 | $47.7K | <0.01% | -5,045 | 13F-HRTimelineGroup |
| BAKER TILLY WEALTH MANAGEMENT, LLC | 20,000 | $46.4K | 0.02% | 0 | 13F-HRTimeline |
| Legato Capital Management LLC | 17,984 | $41.7K | 0.01% | 0 | 13F-HRTimeline |
| SIMPLEX TRADING, LLC | 17,300 | $40K | <0.01% | -7,744 | 13F-HRTimeline |
| JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC | 16,332 | $37.9K | <0.01% | +3,421 | 13F-HR/ATimelineGroup |
| GSA CAPITAL PARTNERS LLP | 13,127 | $30K | <0.01% | new | 13F-HRTimeline |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co | 12,911 | $30K | <0.01% | 0 | 13F-HR/ATimelineGroup |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO… | 12,385 | $28.7K | <0.01% | +293 | 13F-HRTimelineGroup |
| GROUP ONE TRADING LLC | 10,210 | $23.7K | <0.01% | +4,333 | 13F-HRTimeline |
| JPMORGAN CHASE & COin group JPMORGAN CHASE & CO | 3,723 | $8.64K | <0.01% | +3,684 | 13F-HRTimelineGroup |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 1,749 | $4.06K | <0.01% | +1,325 | 13F-HRTimelineGroup |
| MAI Capital Management | 1,441 | $3.34K | <0.01% | 0 | 13F-HRTimeline |
| WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN | 1,000 | $2.32K | <0.01% | 0 | 13F-HRTimelineGroup |
| LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC | 845 | $1K | <0.01% | +540 | 13F-HRTimelineGroup |
| SBI Securities Co., Ltd. | 301 | $698 | <0.01% | +300 | 13F-HRTimeline |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 151 | $350 | <0.01% | +7 | 13F-HRTimelineGroup |
| ORG Partners LLC | 120 | $279 | <0.01% | new | 13F-HRTimeline |
| CONCOURSE FINANCIAL GROUP SECURITIES, I… | 0 | $0 | 0 | 13F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios. |
Events
Galkin Vladimir and 2 other reporting persons reported 200,000 OSS shares, 0.8% of the class, as of 2026-10-07, in a 13G/A filed 2026-10-09. 0001376474-26-000639
Accepted , ingested