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QMCOQMCO
7 quarters

Position history for MWMARSHALL WACE, LLP's holdings in QUANTUM CORP

Yes. Marshall Wace holds 713,075 shares of QMCO (Quantum), worth $7.8M, as of its Q2 2026 13F filing. It increased the position from 37,528 shares in Q1 2026. Marshall Wace has held QMCO since Q4 2025, across 3 quarterly 13F filings.

Current Value

$7.8M

Current Shares

713,075

Total Value Change

+$7.5M

Total Shares Change

+706,887

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Increased
713,075
+1800.1%
$7.8M0.0%$11.00
44
2026-Q1
Increased
37,528
+72.6%
$178,2580.0%$4.75
34
2025-Q4
New
21,740
-
$140,2230.0%$6.45
31
2025-Q3
Exited
0
-100.0%
$00.0%$9.92
0
2025-Q2
New
178,021
-
$1.8M0.0%$9.97
36
2025-Q1
Exited
0
-100.0%
$00.0%$14.38
0
2024-Q4
New
6,188
-
$333,6570.0%$53.92
33

Other major holders of QMCO: Alyeska Investment Group, L.P., Allianz Asset Management GmbH, OAKTREE CAPITAL MANAGEMENT LP, VANGUARD GROUP INC

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