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ISSUER PROFILE · CIK 0000709283 · CUSIP 747906600

QUANTUM CORP /DE/QMCO

2 13D/G filings 2 distinct filers 0 insider transactions (365d)

Post-Filing Returns · across 2 activist filings on this issuer

Median 30d
avg —
Median 60d
avg —
Median 90d
avg —
Median 180d
avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
2
2 SCHEDULE
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
5.12
as of 2026-03-31

13D/G Filings Timeline · 2 total

FiledFormFilerStakeSharesIntent
2025-02-21 SCHEDULE Blue Torch Capital LP 2.30% 135,763 view →
2025-01-07 SCHEDULE PACIFIC INVESTMENT MANAGEMENT CO LLC 16.70% 962,127 view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-03-31 1,796,279 5.12 -11.2%
2026-03-13 2,022,035 4.31 -12.7%
2026-02-27 2,316,565 3.68 +10.3%
2026-02-13 2,100,850 4.01 +23.4%
2026-01-30 1,702,614 3.03 +4.5%
2026-01-15 1,629,950 2.87 +3.5%
2025-12-31 1,574,033 2.97 -7.7%
2025-12-15 1,705,424 3.58 +11.8%

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