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  2. QMCO
Q

Quantum Corporation (QMCO)

NGM – Real Time Price. Currency in USD

4.68

-0.54 (-10.34%)

At close: Mar 27, 2026, 4:00 PM EDT

4.70

+0.02 (0.43%)

After-hours: Mar 27, 2026, 7:58 PM EDT

  • Summary
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Ownership

Major Holders

Breakdown
2.86%% of Shares Held by All Insider
15.33%% of Shares Held by Institutions
15.78%% of Float Held by Institutions
48Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
Vanguard Group Inc625,5382025-12-314.27%$2.93M
Portolan Capital Management, LLC477,2142025-12-313.26%$2.23M
Blackrock Inc.220,7462025-12-311.51%$1.03M
UBS Group AG165,8382025-12-311.13%$776,121.00
Geode Capital Management, LLC156,8712025-12-311.07%$734,156.00
State Street Corporation90,7142025-12-310.62%$424,541.00
AlphaQuest LLC29,3862025-12-310.20%$137,526.00
Northern Trust Corporation28,7622025-12-310.20%$134,606.00
Flagship Harbor Advisors, LLC26,5852025-12-310.18%$124,417.00
Marshall Wace LLP21,7402025-12-310.15%$101,743.00

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund374,1962025-12-312.56%$1.75M
Fidelity Rutland Square TRT II-Strategic Advisers U.S. Total Stock Fd.337,2972026-01-312.30%$1.58M
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund153,2512025-12-311.05%$717,214.00
Fidelity Concord Street Trust-Fidelity Extended Market Index Fund72,8952026-01-310.50%$341,148.00
iShares Trust-iShares Micro-Cap ETF27,9962026-01-310.19%$131,021.00
Fidelity Concord Street Trust-Fidelity Total Market Index Fund27,5322026-01-310.19%$128,849.00
Fidelity Concord Street Trust-Fidelity Series Total Market Index Fund19,6792026-01-310.13%$92,097.00
T. ROWE PRICE INDEX TRT, INC.-T. Rowe Price Extended Eqy. Market Index11,0002025-12-310.08%$51,479.00
VANGUARD VALLEY FORGE FUNDS-VANGUARD BALANCED INDEX FUND10,1902025-09-300.07%$55,841.00
Bridgeway Funds, Inc.-Ultra-Small Company Market Fund8,2402025-12-310.06%$38,563.00
VANGUARD Inst. INDEX Fd.S-Vanguard Inst. Total Stock Market Index Fd.6,7662025-12-310.05%$31,664.00