Marshall Wace
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Marshall Wace’s Ampco-Pittsburgh AP Stock Holding History

Marshall Wace’s Portfolio AP Stock Details AP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.08M Sell
161,291
-47,051
-23% -$338K ﹤0.01% 2103
2025
Q4 		$1.11M Buy
+208,342
New +$576K ﹤0.01% 1874

Other funds holding AP

GI
GAMCO Investors Greenwich, Connecticut $10.2B AUM 30.27% 1-Year Est. Return
GF
Gabelli Funds Rye, New York $14.8B AUM 32.24% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
HA
Huntleigh Advisors St. Louis, Missouri $585M AUM 50.58% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
MIM
Meros Investment Management Dallas, Texas $231M AUM 35.94% 1-Year Est. Return

Marshall Wace's AP Position: Q1 2026 in Review

Marshall Wace reduced its Ampco-Pittsburgh (AP) stake by 23% in Q1 2026, selling an estimated $338K and leaving 161,291 shares worth $1.08M. The position accounts for ﹤0.01% of the portfolio, ranked #2103.

Marshall Wace first reported a position in AP in Q4 2025 and has held it in 2 quarters since. The position peaked at $1.11M in Q4 2025. 63 funds tracked by Wall St. Rank hold AP as of Q1 2026.

  • Marshall Wace held 161,291 shares of Ampco-Pittsburgh worth $1.08M as of Q1 2026.
  • Marshall Wace sold 47,051 Ampco-Pittsburgh shares in Q1 2026, an estimated $338K.
  • Ampco-Pittsburgh made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2103 holding.
  • Marshall Wace first reported a position in Ampco-Pittsburgh in Q4 2025 and has held it in 2 quarters since.
  • Marshall Wace's Ampco-Pittsburgh position peaked at $1.11M in Q4 2025.
  • 63 funds tracked by Wall St. Rank held Ampco-Pittsburgh as of Q1 2026.

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