Quantum Corporation QMCO

Set alert

14.47 USD +0.78 (+5.70%)

At closeNov 6, 2026, 7:56 PM EST

14.49 +0.02 +0.14%

After hours · Nov 6, 7:56 PM ET

14.08 Day range 15.16

4.31 52-week range 34.50

Held by insiders 37.92%

Held by institutions 35.52%

Float held by institutions 57.22%

Institutions 82

Top institutional holders
Holder	% held	Shares	Value	Reported
Alyeska Investment Group, L.p.	6.73%	2,653,928	70.38M	Jun 29, 2026
Oaktree Capital Management LP	5.10%	2,011,678	53.35M	Jun 29, 2026
Two Seas Capital Lp	3.78%	1,490,992	39.54M	Sep 29, 2026
Neuberger Berman Group, LLC	2.95%	1,163,315	30.85M	Jun 29, 2026
Ashford Capital Management Inc.	2.64%	1,039,200	27.56M	Jun 29, 2026
Portolan Capital Management, LLC	2.59%	1,020,120	27.05M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
NEUBERGER BERMAN EQUITY FUNDS-Neuberger Intrinsic Value Fund	1.97%	776,645	20.60M	Aug 30, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	1.07%	420,696	11.16M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund	0.43%	170,893	4.53M	Jun 29, 2026
ADVISORS' INNER CIRCLE FUND II-Mango Growth ETF	0.23%	90,274	2.39M	Jul 30, 2026
Fidelity Concord Street Trust-Fidelity Extended Market Index Fund	0.18%	72,779	1.93M	Aug 30, 2026
Fidelity Concord Street Trust-Fidelity Nasdaq Composite Index Fund	0.15%	59,502	1.58M	Aug 30, 2026

QMCO insiders
Insider	Relation	Latest transaction	Date	Shares held
CLANCY JAMES C	Chief Operating Officer	Stock Award(Grant)	Sep 30, 2026	163,000
DIALECTIC TECHNOLOGY SPV L.L.C	Beneficial Owner of more than 10% of a Class of Security	Conversion of Exercise of derivative security	Jun 3, 2026	14,104,600
FICHTHORN JOHN A	Director and Beneficial Owner of more than 10% of a Class of Security	Stock Award(Grant)	Sep 30, 2026	14,145,500
GIANELLA KENNETH PHILIPPE	Chief Financial Officer	Sale	Feb 2, 2025	32,402
JAWORKSI DON	Director	Stock Award(Grant)	Sep 30, 2026	51,675
LERNER JAMES J	Chief Executive Officer	Sale	Apr 20, 2025	110,848

Held by funds