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Disclosery

OSS ONE STOP SYS INC

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COMMON STOCK (common), issuer CIK 1394056

75 managers (77 13F filers) reported a position in OSS shares at 2026-03-31, 8,333,091 shares in all. 24 filers opened a position and 18 filers sold out during the quarter.

Managers
75
13F filers
77
New
24
Added
22
Reduced
22
Sold out
18
Shares held by filers
8,333,091

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding1,099,166$8.32MnewTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC874,558$6.62M0.01%+270,75313F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.597,303$4.52M<0.01%+459,85913F-HRTimelineGroup
BARD ASSOCIATES INC540,666$4.09M1.03%-310,19213F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY431,919$3.27M<0.01%+369,67913F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP418,978$3.17M<0.01%+145,04313F-HRTimelineGroup
UBS Group AGin group UBS Group AG407,014$3.08M<0.01%+400,00213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC400,729$3.03M<0.01%+359,21913F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC356,676$2.7M<0.01%+211,00013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC259,960$1.97M<0.01%-115,74113F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS252,733$1.91M0.01%+99,83213F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC252,453$1.91M<0.01%+13,95813F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…236,299$1.79M<0.01%-22,77313F-HRTimelineGroup
Trexquant Investment LP217,829$1.65M0.01%-38,98113F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO166,632$1.26M<0.01%+66,78413F-HRTimelineGroup
Cambridge Investment Research Advisors,…145,624$1.1M<0.01%+32,58613F-HRTimeline
Informed Momentum Co LLC135,989$1.03M0.12%-26,98413F-HRTimeline
STATE STREET CORPin group STATE STREET CORP101,676$770K<0.01%+17,10013F-HRTimelineGroup
THOMPSON SIEGEL & WALMSLEY LLC96,963$734K0.01%-56,16113F-HRTimeline
HRT FINANCIAL LP79,005$598K<0.01%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC77,036$583K<0.01%-51,71313F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC75,688$573K<0.01%+71,16113F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…73,865$559K<0.01%new13F-HRTimelineGroup
Eddie Patel Inc67,059$508K0.39%new13F-HRTimeline
OXFORD ASSET MANAGEMENT LLP64,403$488K0.2%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Virtu Financial LLCin group Virtu Financial LLC61,458$465K0.02%new13F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC60,000$454K0.04%-30,25313F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC58,476$443K<0.01%-89,48413F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd50,862$385K0.01%-3,94413F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP46,974$356K<0.01%+5,05113F-HRTimelineGroup
Penbrook Management LLC46,740$354K0.27%013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…43,171$327K<0.01%+15,03113F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP37,913$287K<0.01%new13F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…37,376$283K<0.01%+4,68813F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC35,534$269K0.04%-33,82213F-HRTimeline
Centiva Capital, LP33,627$255K0.01%+22,16113F-HRTimeline
Schonfeld Strategic Advisors LLC29,480$223K<0.01%-2,99113F-HRTimeline
Engineers Gate Manager LP29,000$220K<0.01%-4,85313F-HRTimeline
Hillsdale Investment Management Inc.28,844$218K0.01%-2,00013F-HRTimeline
SG Americas Securities, LLC28,022$212K<0.01%new13F-HRTimeline
MANGROVE PARTNERS IM, LLC23,889$181K0.01%new13F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/23,239$176K<0.01%+23,22113F-HRTimelineGroup
Apollon Wealth Management, LLCin group Apollon Wealth Management, LLC21,040$159K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC20,503$155K<0.01%-2,59113F-HRTimelineGroup
BAKER TILLY WEALTH MANAGEMENT, LLC20,000$151K0.04%013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…17,269$131K0.01%new13F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP13,738$130K0.01%-21,86713F-HRTimeline
Anfield Capital Management, LLCin group Anfield Capital Management, L…17,000$129K0.04%new13F-HRTimelineGroup
OMERS ADMINISTRATION Corp15,200$115K<0.01%-33,00013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co12,911$97.7K<0.01%013F-HRTimelineGroup
McAdam, LLC12,746$96.5K<0.01%-113F-HRTimeline
CHOREO, LLC11,306$85.6K<0.01%new13F-HRTimeline
IMC-Chicago, LLC11,187$84.7K<0.01%new13F-HRTimeline
Strait & Sound Wealth Management LLC11,044$83.6K0.03%new13F-HRTimeline
NKCFO LLC10,000$76K0.02%-3,00013F-HRTimeline
Lodestone Wealth Management LLC6,803$51.5K0.02%new13F-HR/ATimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,754$36K<0.01%-14,39113F-HRTimelineGroup
Smartleaf Asset Management LLC4,000$28.8K<0.01%013F-HRTimeline
Caitong International Asset Management …3,632$27.5K0.01%new13F-HRTimeline
NewEdge Advisors, LLC3,020$22.9K<0.01%new13F-HR/ATimeline
Arax Advisory Partners2,471$22K<0.01%+1,98613F-HRTimeline
Advisory Services Network, LLC2,341$17.7K<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,996$15.1K<0.01%-226,34013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,627$12.3K<0.01%+72713F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,000$7.57K<0.01%013F-HR/ATimelineGroup
Lynrock Lake LP666$5.04K<0.01%-665,25213F-HRTimeline
Hurley Capital, LLC622$4.71K<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA552$4K<0.01%+32613F-HRTimelineGroup
MAI Capital Management226$1.71K<0.01%new13F-HRTimeline
Steward Partners Investment Advisory, L…200$1.51K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP174$1.33K<0.01%new13F-HRTimelineGroup
Strive Financial Group ,LLC100$1K<0.01%013F-HRTimeline
Root Financial Partners, LLC65$492<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC56$421<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.14$106<0.01%+1313F-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