What does CUSIP 747906600 represent in this 13F holders report?

CUSIP 747906600 is the security identifier for QMCO - QUANTUM CORP /DE/ - Common Stock, $0.01 par value per share used to aggregate holder disclosures.

How many institutions held QMCO - QUANTUM CORP /DE/ - Common Stock, $0.01 par value per share in Q2 2026?

59 institutional investors reported QMCO - QUANTUM CORP /DE/ - Common Stock, $0.01 par value per share for Q2 2026. Use the holders table for investor-level position and value details.

- Common Stock, $0.01 par value per share (QMCO)

CUSIP: 747906600

Q2 2026 13F Holders as of 30 Jun 2026

Security type / class: Equity / Common Stock, $0.01 par value per share
Total 13F shares: 14,378,632
Total 13F value: $157,256,442
Share change: +12,890,365
Put/Call ratio: 17%
SEC-reported price per share: $11.00
Number of holders: 59
Value change: +$141,187,321
Number of buys: 46
Number of sells: 14
Shares outstanding: 39,500,556

Security key

747906600

Report period

Q2 2026

Institutions

Top holders

QMCO full security history Ownership snapshot Full 13F holder table Previous quarter: Q1 2026 QUANTUM CORP /DE/ SEC filings QUANTUM CORP /DE/ company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 747906600

Previous quarter: Q1 2026

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of QMCO - QUANTUM CORP /DE/ - Common Stock, $0.01 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Dialectic Technology SPV LLC

Disclosed value leader

Dialectic Technology SPV LLC

Comparable rows

15/15

Latest evidence

30 Jun 2026

13D/G 3/4/5 Lead comparable stake: 40% 13D/G row: Dialectic Technology SPV LLC Showing 1-6 of 15 holder rows.

Quick read

Dialectic Technology SPV LLC leads the comparable SEC ownership view at 40%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Dialectic Technology SPV LLC's linked filing trail.

Comparable ownership Top 5

Dialectic Technology SPV LLC 40%

Alyeska Investment Group, L.P. 6.7%

Two Seas Capital LP 6.3%

OAKTREE CAPITAL MANAGEMENT LP 5.1%

VANGUARD GROUP INC 5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Dialectic Technology SPV LLC	13D/G 3/4/5 JOHN FICHTHORN · 10%+ Owner 13D/G 3/4/5	40%	$151,021,051 16,892,735 shares	+$64,381,473	04 Jun 2026
Alyeska Investment Group, L.P.	13D/G 13D/G	6.7%	$25,663,484 2,653,928 shares	$0	30 Jun 2026
Two Seas Capital LP	13D/G 13D/G	6.3%	$24,064,133 2,488,535 shares	$0	30 Jun 2026
OAKTREE CAPITAL MANAGEMENT LP	13D/G 13D/G	5.1%	$19,452,926 2,011,678 shares	$0	30 Jun 2026
VANGUARD GROUP INC	13D/G The Vanguard Group 13D/G	5%	$2,714,883 242,184 shares	$0	31 Dec 2024
Blue Torch Capital LP	13D/G 13D/G	2.3%	$1,521,903 135,763 shares	-$3,029,110	13 Feb 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

14,378,632

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2026 vs Q1 2026 Across Filers

Q1 2026 holders

Q2 2026 holders

Holder diff

Investor	Q1 2026 Shares	Q2 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q2 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend