DOSSIER · 13F Holders · Q4 2025
QMCO
QUANTUM CORP
40 institutions still hold QUANTUM CORP as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 747906600·40 13F holders·last filed Dec 31, 2025
AI Holders Summary · Q4 2025
40 institutions reported QMCO in Q4 2025. Portolan Capital Management, LLC leads at 28.7% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.
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