Marshall Wace
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Marshall Wace’s Mattel MAT Stock Holding History

Marshall Wace’s Portfolio MAT Stock Details MAT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$33.1M Sell
2,384,941
-1,341,638
-36% -$19.6M 0.03% 520
2026
Q1 		$54.1M Buy
3,726,579
+3,712,984
+27,311% +$67.7M 0.05% 340
2025
Q4 		$270K Sell
13,595
-91,465
-87% -$1.77M ﹤0.01% 2492
2025
Q3 		$1.77M Sell
105,060
-1,147,419
-92% -$20.9M ﹤0.01% 1678
2025
Q2 		$24.7M Buy
+1,252,479
New +$22.3M 0.03% 508
2024
Q3 		– Sell
-162,131
Closed -$2.64M – 2778
2024
Q2 		$2.64M Sell
162,131
-1,273,804
-89% -$23.1M ﹤0.01% 1242
2024
Q1 		$28.4M Buy
1,435,935
+34,174
+2% +$648K 0.04% 394
2023
Q4 		$26.5M Buy
1,401,761
+651,342
+87% +$12.7M 0.04% 398
2023
Q3 		$16.5M Buy
+750,419
New +$16M 0.03% 493
2023
Q2 		– Sell
-426,536
Closed -$7.85M – 2760
2023
Q1 		$7.85M Buy
+426,536
New +$7.92M 0.02% 801
2020
Q4 		– Sell
-102,279
Closed -$1.2M – 2059
2020
Q3 		$1.2M Sell
102,279
-1,196,761
-92% -$13.3M 0.01% 965
2020
Q2 		$12.6M Sell
1,299,040
-503,189
-28% -$4.57M 0.09% 231
2020
Q1 		$15.9M Buy
1,802,229
+1,753,668
+3,611% +$21.5M 0.16% 140
2019
Q4 		$658K Buy
48,561
+34,157
+237% +$405K ﹤0.01% 1085
2019
Q3 		$164K Buy
+14,404
New +$165K ﹤0.01% 1317
2019
Q2 		– Sell
-282,816
Closed -$3.68M – 1629
2019
Q1 		$3.68M Buy
282,816
+282,811
+5,656,220% +$3.78M 0.03% 559
2018
Q4 		$0 Buy
+5
New +$66 ﹤0.01% 1717
2017
Q1 		– Sell
-52,586
Closed -$1.45M – 567
2016
Q4 		$1.45M Buy
+52,586
New +$1.6M 0.01% 699
2014
Q4 		– Sell
-176,359
Closed -$5.41M – 893
2014
Q3 		$5.41M Buy
+176,359
New +$6.24M 0.08% 275

Other funds holding MAT

EIG
EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AI
Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
SAM
Southeastern Asset Management Memphis, Tennessee $1.92B AUM 6.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return

Marshall Wace's MAT Position: Q2 2026 in Review

Marshall Wace reduced its Mattel (MAT) stake by 36% in Q2 2026, selling an estimated $19.6M and leaving 2,384,941 shares worth $33.1M. The position accounts for 0.03% of the portfolio, ranked #520.

Marshall Wace first reported a position in MAT in Q3 2014 and has held it in 19 quarters since. The position peaked at $54.1M in Q1 2026. 403 funds tracked by Wall St. Rank hold MAT as of Q2 2026.

  • Marshall Wace held 2,384,941 shares of Mattel worth $33.1M as of Q2 2026.
  • Marshall Wace sold 1,341,638 Mattel shares in Q2 2026, an estimated $19.6M.
  • Mattel made up 0.03% of Marshall Wace's portfolio in Q2 2026, its #520 holding.
  • Marshall Wace first reported a position in Mattel in Q3 2014 and has held it in 19 quarters since.
  • Marshall Wace's Mattel position peaked at $54.1M in Q1 2026.
  • 403 funds tracked by Wall St. Rank held Mattel as of Q2 2026.

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