Marshall Wace
QMCO icon

Marshall Wace’s Quantum Corp QMCO Stock Holding History

Marshall Wace’s Portfolio QMCO Stock Details QMCO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$7.84M Buy
713,075
+675,547
+1,800% +$6.48M 0.01% 1144
2026
Q1 		$178K Buy
37,528
+15,788
+73% +$95.2K ﹤0.01% 2810
2025
Q4 		$140K Buy
+21,740
New +$195K ﹤0.01% 2664
2025
Q3 		– Sell
-178,021
Closed -$1.77M – 3314
2025
Q2 		$1.77M Buy
+178,021
New +$1.97M ﹤0.01% 1614
2025
Q1 		– Sell
-6,188
Closed -$334K – 3013
2024
Q4 		$334K Buy
+6,188
New +$89.8K ﹤0.01% 2200
2022
Q3 		– Sell
-1,120
Closed -$32K – 3711
2022
Q2 		$32K Buy
+1,120
New +$42.4K ﹤0.01% 3347

Other funds holding QMCO

Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
TSC
Two Seas Capital Rye, New York $5.05B AUM 164.99% 1-Year Est. Return
OCM
Oaktree Capital Management Los Angeles, California $7.21B AUM 45.97% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return
ACM
Ashford Capital Management Wilmington, Delaware $933M AUM 56.2% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
MHP
Manatuck Hill Partners Westport, Connecticut $302M AUM 117.41% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
CCM
Cinctive Capital Management New York $2.72B AUM 43.27% 1-Year Est. Return

Marshall Wace's QMCO Position: Q2 2026 in Review

Marshall Wace increased its Quantum Corp (QMCO) stake by 1,800% in Q2 2026, buying an estimated $6.48M and bringing the position to 713,075 shares worth $7.84M. The position accounts for 0.01% of the portfolio, ranked #1144.

Marshall Wace first reported a position in QMCO in Q2 2022 and has held it in 6 quarters since. 60 funds tracked by Wall St. Rank hold QMCO as of Q2 2026.

  • Marshall Wace held 713,075 shares of Quantum Corp worth $7.84M as of Q2 2026.
  • Marshall Wace bought 675,547 Quantum Corp shares in Q2 2026, an estimated $6.48M.
  • Quantum Corp made up 0.01% of Marshall Wace's portfolio in Q2 2026, its #1144 holding.
  • Marshall Wace first reported a position in Quantum Corp in Q2 2022 and has held it in 6 quarters since.
  • 60 funds tracked by Wall St. Rank held Quantum Corp as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.