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Disclosery

OSS ONE STOP SYS INC

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COMMON STOCK (common), issuer CIK 1394056

68 managers (69 13F filers) reported a position in OSS shares at 2025-12-31, 9,298,038 shares in all. 21 filers opened a position and 10 filers sold out during the quarter.

Managers
68
13F filers
69
New
21
Added
25
Reduced
17
Sold out
10
Shares held by filers
9,298,038

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.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCin group VANGUARD GROUP INC1,054,266$7.57M<0.01%+181,56613F-HRTimelineGroup
BARD ASSOCIATES INC850,858$6.11M1.57%-66,44413F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …693,493$4.98M<0.01%+141,42213F-HRTimelineGroup
Lynrock Lake LP665,918$4.78M0.32%-777,76913F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC603,805$4.34M0.01%+277,76313F-HRTimelineGroup
Pacific Ridge Capital Partners, LLC432,361$3.1M0.68%-13,43313F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC375,701$2.7M<0.01%-17,45913F-HRTimeline
Archon Capital Management LLC326,812$2.35M1.34%-150,00013F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding308,794$2.22M+131,804Timeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP273,935$1.97M<0.01%-227,23413F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…259,072$1.86M<0.01%+79,14813F-HRTimelineGroup
Trexquant Investment LP256,810$1.84M0.02%+164,18913F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC238,495$1.71M<0.01%+27,11113F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS228,336$1.64M<0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC185,992$1.33M<0.01%+104,67713F-HRTimelineGroup
Informed Momentum Co LLC162,973$1.17M0.13%013F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC153,124$1.1M0.02%-46,87613F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS152,901$1.1M<0.01%+137,35313F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC147,960$1.06M<0.01%+89,40113F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC145,676$1.05M<0.01%-719,26313F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.137,444$987K<0.01%+43,70413F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC128,749$924K<0.01%-15,53513F-HR/ATimelineGroup
Cambridge Investment Research Advisors,…113,038$812K<0.01%new13F-HRTimeline
Manatuck Hill Partners, LLC100,000$718K0.25%+50,00013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO99,848$717K<0.01%new13F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC90,253$648K0.05%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP84,576$607K<0.01%-40013F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC69,356$498K0.08%+12,80613F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO68,394$491K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY62,240$447K<0.01%+6,03713F-HR/ATimelineGroup
XTX Topco Ltdin group XTX Topco Ltd54,806$394K0.01%-17,30813F-HRTimelineGroup
Qube Research & Technologies Ltd54,309$390K<0.01%new13F-HRTimeline
Belpointe Asset Management LLC52,000$373K0.01%new13F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.51,093$367K<0.01%new13F-HRTimelineGroup
OMERS ADMINISTRATION Corp48,200$346K<0.01%new13F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP47,163$339K<0.01%+23813F-HRTimelineGroup
Penbrook Management LLC46,740$336K0.23%-67313F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP41,923$301K<0.01%+6,00013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC41,510$298K<0.01%+20,52413F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP35,605$256K0.02%-1,02313F-HRTimeline
Engineers Gate Manager LP33,853$243K<0.01%-38113F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…32,688$235K<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC32,471$233K<0.01%new13F-HRTimeline
Hillsdale Investment Management Inc.30,844$221K0.01%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…28,140$202K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC23,094$166K<0.01%+19,58813F-HRTimelineGroup
BAKER TILLY WEALTH MANAGEMENT, LLC20,000$144K0.04%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…19,145$137K<0.01%+15,71213F-HRTimelineGroup
Legato Capital Management LLC16,324$117K0.01%+3,01913F-HRTimeline
UMB Bank, n.a.15,300$110K<0.01%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
NKCFO LLC13,000$93K0.03%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co12,911$92.7K<0.01%013F-HRTimelineGroup
McAdam, LLC12,747$91.5K<0.01%new13F-HRTimeline
Savant Capital, LLCin group Savant Capital, LLC12,139$87.2K<0.01%new13F-HRTimelineGroup
Centiva Capital, LP11,466$82.3K<0.01%-6,62213F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…10,560$75.8K<0.01%new13F-HRTimelineGroup
UBS Group AGin group UBS Group AG7,012$50.3K<0.01%+5,11613F-HRTimelineGroup
FNY Investment Advisers, LLC6,500$46K0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC4,527$32.5K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC4,058$29.1K<0.01%+1,72113F-HRTimeline
Smartleaf Asset Management LLC4,000$28.6K<0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,000$7.18K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.900$6.46K<0.01%-74513F-HRTimelineGroup
Arax Advisory Partners485$3.48K<0.01%+32513F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA226$2K<0.01%+22113F-HRTimelineGroup
Strive Financial Group ,LLC100$718<0.01%13F-HR/ATimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/18$129<0.01%-2,72913F-HRTimelineGroup
SBI Securities Co., Ltd.1$7<0.01%013F-HRTimeline

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