Marshall Wace
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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
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

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SAMU
SONA Asset Management (US) New York $4.74B AUM 11.18% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Marshall Wace's QMCO Position: Q1 2026 in Review

Marshall Wace increased its Quantum Corp (QMCO) stake by 73% in Q1 2026, buying an estimated $95.2K and bringing the position to 37,528 shares worth $178K. The position accounts for ﹤0.01% of the portfolio, ranked #2810.

Marshall Wace first reported a position in QMCO in Q2 2022 and has held it in 5 quarters since. The position peaked at $1.77M in Q2 2025. 37 funds tracked by Wall St. Rank hold QMCO as of Q1 2026.

  • Marshall Wace held 37,528 shares of Quantum Corp worth $178K as of Q1 2026.
  • Marshall Wace bought 15,788 Quantum Corp shares in Q1 2026, an estimated $95.2K.
  • Quantum Corp made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2810 holding.
  • Marshall Wace first reported a position in Quantum Corp in Q2 2022 and has held it in 5 quarters since.
  • Marshall Wace's Quantum Corp position peaked at $1.77M in Q2 2025.
  • 37 funds tracked by Wall St. Rank held Quantum Corp as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.