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Public ownership evidence

Quantum Corporation (QMCO) Ownership Disclosures

Read QMCO insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-14T23:32:50.005Z

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2026-10-052026-10-01White Yue ZhouA12,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-05. Subtracting those calendar dates gives 4 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent Form 4 activity

Inspect all 11 displayed rows: Recent Form 4 activity

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2026-10-052026-10-01White Yue ZhouA12,000Not reported
2026-10-052026-10-01Blevins Tony JA12,000Not reported
2026-10-052026-10-01Tracy John R.A12,000Not reported
2026-10-052026-10-01FICHTHORN JOHNA12,000Not reported
2026-10-052026-10-01Clancy James CA150,000Not reported
2026-10-052026-10-01Clancy James CA400,000Not reported
2026-10-052026-10-01Meyrath HuguesA500,000Not reported
2026-10-052026-10-01Patel HiralA50,000Not reported
2026-10-052026-10-01Jaworksi DonA12,000Not reported
2026-10-052026-10-01Craythorne AnthonyA200,000Not reported
2026-08-062026-08-03Craythorne AnthonyS1,478Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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ASHFORD CAPITAL MANAGEMENT INC2026-06-302026-08-22400,000$3,520,000None
ASHFORD CAPITAL MANAGEMENT INC2026-06-302026-08-22639,200$7,031,200None
EFG International AG2026-06-302026-08-15100$1,099None
SEI INVESTMENTS CO2026-06-302026-08-1538,420$422,620None
SEI INVESTMENTS CO2026-06-302026-08-15319$3,530None
KKM Financial LLC2026-06-302026-08-1590,274$960,515None
Quarry LP2026-06-302026-08-1517$187None
Qube Research & Technologies Ltd2026-06-302026-08-1580,977$890,747None
OSAIC HOLDINGS, INC.2026-06-302026-08-15475$5,229None
OSAIC HOLDINGS, INC.2026-06-302026-08-1510$110None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1512,055$132,605None
Squarepoint Ops LLC2026-06-302026-08-1533,817$371,987None
Man Group plc2026-06-302026-08-1568,593$754,523None
JANE STREET GROUP, LLC2026-06-302026-08-1537,900$416,900Put
JANE STREET GROUP, LLC2026-06-302026-08-15170,600$1,876,600Call
Manatuck Hill Partners, LLC2026-06-302026-08-15350,000$3,850,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15104,000$1,144,000Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1526,300$289,300Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1569,775$767,525None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-1534,601$380,611None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1521,755$239,305None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-151,580$18,407None
Alyeska Investment Group, L.P.2026-06-302026-08-152,653,928$29,193,208None
Cinctive Capital Management LP2026-06-302026-08-15182,769$2,010,459None
ROYAL BANK OF CANADA2026-06-302026-08-15765$8,000None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1516,240$178,640None
CITADEL ADVISORS LLC2026-06-302026-08-1520,600$226,600Put
CITADEL ADVISORS LLC2026-06-302026-08-15116,200$1,278,200Call
Portolan Capital Management, LLC2026-06-302026-08-151,020,120$11,221,320None
OAKTREE CAPITAL MANAGEMENT LP2026-06-302026-08-152,011,678$22,128,458None
Invesco Ltd.2026-06-302026-08-1510,839$119,229None
SONA ASSET MANAGEMENT (US) LLC2026-06-302026-08-1598,000$1,078,000Call
SONA ASSET MANAGEMENT (US) LLC2026-06-302026-08-15146,250$1,608,750None
SONA ASSET MANAGEMENT (US) LLC2026-06-302026-08-152,100$23,100Call
SONA ASSET MANAGEMENT (US) LLC2026-06-302026-08-153,750$41,250None
TUDOR INVESTMENT CORP ET AL2026-06-302026-08-1510,400$114,400Call
GOLDMAN SACHS GROUP INC2026-06-302026-08-1519,153$210,683None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-1599,381$1,093,191None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-153,445$37,895None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-151,010$11,110None
BARCLAYS PLC2026-06-302026-08-15455$5,005None
PRICE T ROWE ASSOCIATES INC /MD/2026-06-302026-08-1525,069$276,000None
WELLS FARGO & COMPANY/MN2026-06-302026-08-1511,300$124,300None
BANK OF AMERICA CORP /DE/2026-06-302026-08-1520,474$225,214None
BANK OF AMERICA CORP /DE/2026-06-302026-08-15149,656$1,646,216None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-14605,541$6,660,951None
Vanguard Global Advisers, LLC2026-06-302026-08-146,000$66,000None
UBS Group AG2026-06-302026-08-142,822$31,042None
UBS Group AG2026-06-302026-08-1443,159$474,749None
UBS Group AG2026-06-302026-08-14125$1,375None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.