QMCO
QUANTUM CORPData as of 2026 Q2 (06-30) · 13F snapshot
Summary
QUANTUM CORP (QMCO) is held as common stock by 3 tracked hedge-fund managers, with a combined reported value of ~$24.07M; the largest are Howard Marks, Renaissance Technologies, Izzy Englander. 2 tracked managers also disclosed PUT or CALL positions, reported separately below. This quarter: 3 new. 1 public STOCK Act / OGE trade disclosures are on record. Data as of 2026 Q2, from public SEC 13F filings, delayed up to ~45 days.
Attention · LowThis quarter · Heating up
Common-stock holders32 also report options
Congress trades1
Price$31.40vs quarter-end+185.45%
Sectors0
This quarter's moves
Top holderNew3
Added0
Trimmed / sold0
Howard MarksCommon-stock positions
PUT and CALL disclosures are excluded from these holder counts and values.
Howard MarksNew
Value $22.13M0.6% of portfolio2,011,6782026 Q2
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Howard Marks | $22.13M | 0.6% | New |
PUT / CALL disclosures
Reported separately: 13F option values are not common-stock ownership and do not reveal the full strategy or economic exposure.
Value $1.28M— of portfolio116,2002026 Q2
Value $226.6K— of portfolio20,6002026 Q2
Value $114.4K— of portfolio10,4002026 Q2
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinCALL | $1.28M | — | — |
| Ken GriffinPUT | $226.6K | — | — |
| Paul Tudor JonesCALL | $114.4K | — | — |
Public SEC 13F filings may appear up to 45 days after quarter-end; STOCK Act / OGE trade filings are generally due within 45 days but may be late. Partial data only — research, not investment advice.