Group One Trading
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Group One Trading’s Mattel MAT Stock Holding History

Group One Trading’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
Q1 		$777K Sell
53,500
-11,100
-17% -$202K ﹤0.01% 2937
2025
Q4 		$1.28M Buy
64,600
+4,400
+7% +$85K ﹤0.01% 2677
2025
Q3 		$1.01M Buy
60,200
+2,100
+4% +$38.3K ﹤0.01% 3019
2025
Q2 		$1.15M Buy
58,100
+29,400
+102% +$523K ﹤0.01% 2634
2025
Q1 		$558K Buy
28,700
+4,100
+17% +$81.3K ﹤0.01% 2988
2024
Q4 		$436K Sell
24,600
-2,600
-10% -$49.1K ﹤0.01% 3290
2024
Q3 		$518K Sell
27,200
-100,500
-79% -$1.85M ﹤0.01% 2834
2024
Q2 		$2.08M Sell
127,700
-71,200
-36% -$1.29M 0.01% 1425
2024
Q1 		$3.94M Buy
198,900
+77,900
+64% +$1.48M 0.02% 983
2023
Q4 		$2.28M Buy
121,000
+53,400
+79% +$1.04M 0.01% 1755
2023
Q3 		$1.49M Buy
67,600
+34,900
+107% +$745K 0.01% 1894
2023
Q2 		$639K Buy
32,700
+18,900
+137% +$341K ﹤0.01% 2779
2023
Q1 		$254K Sell
13,800
-45,300
-77% -$842K ﹤0.01% 3446
2022
Q4 		$1.05M Sell
59,100
-82,000
-58% -$1.49M ﹤0.01% 2368
2022
Q3 		$2.67M Sell
141,100
-187,000
-57% -$4.18M 0.01% 1659
2022
Q2 		$7.33M Buy
328,100
+240,100
+273% +$5.67M 0.01% 1051
2022
Q1 		$1.95M Sell
88,000
-29,600
-25% -$677K ﹤0.01% 2412
2021
Q4 		$2.54M Sell
117,600
-54,100
-32% -$1.13M ﹤0.01% 2332
2021
Q3 		$3.19M Sell
171,700
-140,200
-45% -$2.91M ﹤0.01% 2174
2021
Q2 		$6.27M Sell
311,900
-44,500
-12% -$919K 0.01% 1488
2021
Q1 		$7.1M Buy
356,400
+207,700
+140% +$4.02M 0.01% 1215
2020
Q4 		$2.6M Sell
148,700
-1,600
-1% -$23.6K ﹤0.01% 1824
2020
Q3 		$1.76M Buy
150,300
+17,000
+13% +$189K 0.01% 1718
2020
Q2 		$1.29M Buy
133,300
+27,200
+26% +$247K 0.01% 1810
2020
Q1 		$935K Sell
106,100
-33,500
-24% -$411K 0.01% 1576
2019
Q4 		$1.89M Sell
139,600
-12,900
-8% -$153K 0.01% 1323
2019
Q3 		$1.74M Buy
152,500
+12,600
+9% +$144K 0.01% 1318
2019
Q2 		$1.57M Buy
139,900
+60,400
+76% +$709K 0.01% 1271
2019
Q1 		$1.03M Buy
79,500
+14,200
+22% +$190K 0.01% 1381
2018
Q4 		$652K Buy
65,300
+2,600
+4% +$34.4K 0.01% 1820
2018
Q3 		$984K Sell
62,700
-94,400
-60% -$1.51M 0.01% 1708
2018
Q2 		$2.58M Buy
157,100
+62,200
+66% +$944K 0.02% 948
2018
Q1 		$1.25M Sell
94,900
-97,500
-51% -$1.52M 0.01% 1339
2017
Q4 		$2.96M Buy
192,400
+9,300
+5% +$147K 0.02% 939
2017
Q3 		$2.83M Buy
183,100
+83,800
+84% +$1.5M 0.03% 839
2017
Q2 		$2.14M Buy
99,300
+71,400
+256% +$1.61M 0.02% 919
2017
Q1 		$715K Sell
27,900
-46,500
-63% -$1.25M 0.01% 1587
2016
Q4 		$2.05M Sell
74,400
-3,300
-4% -$100K 0.02% 907
2016
Q3 		$2.35M Buy
77,700
+3,000
+4% +$98.1K 0.03% 768
2016
Q2 		$2.34M Sell
74,700
-19,500
-21% -$618K 0.03% 734
2016
Q1 		$3.17M Buy
94,200
+22,000
+30% +$668K 0.04% 545
2015
Q4 		$1.96M Buy
72,200
+9,000
+14% +$221K 0.02% 866
2015
Q3 		$1.33M Buy
63,200
+3,600
+6% +$84.2K 0.02% 1043
2015
Q2 		$1.53M Sell
59,600
-14,900
-20% -$392K 0.02% 908
2015
Q1 		$1.7M Buy
74,500
+46,800
+169% +$1.24M 0.03% 730
2014
Q4 		$857K Sell
27,700
-5,900
-18% -$181K 0.01% 1166
2014
Q3 		$1.03M Buy
33,600
+14,300
+74% +$506K 0.02% 1096
2014
Q2 		$752K Buy
19,300
+300
+2% +$11.6K 0.01% 1335
2014
Q1 		$762K Buy
19,000
+16,300
+604% +$647K 0.01% 1301
2013
Q4 		$128K Sell
2,700
-3,400
-56% -$152K ﹤0.01% 2821
2013
Q3 		$255K Buy
6,100
+300
+5% +$12.8K ﹤0.01% 2168
2013
Q2 		$263K Buy
+5,800
New +$260K 0.01% 1900

Other funds holding MAT

EIG
EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
AI
Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return
SAM
Southeastern Asset Management Memphis, Tennessee $2.03B AUM 7.06% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $46.4B AUM 27.74% 1-Year Est. Return

Group One Trading's MAT Position: Q1 2026 in Review

Group One Trading opened a new position in Mattel (MAT) in Q1 2026: 8,667 shares worth $126K. The stake represents ﹤0.01% of the portfolio and ranks #4517 among its holdings. This is a return to the name: Group One Trading previously reported a position in MAT as recently as Q3 2025.

Group One Trading first reported a position in MAT in Q2 2013 and has held it in 38 quarters since. The position peaked at $4.48M in Q1 2020. 426 funds tracked by Wall St. Rank hold MAT as of Q1 2026.

  • Group One Trading held 8,667 shares of Mattel worth $126K as of Q1 2026.
  • Mattel was a new Group One Trading position in Q1 2026.
  • Mattel made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #4517 holding.
  • Group One Trading first reported a position in Mattel in Q2 2013 and has held it in 38 quarters since.
  • Group One Trading's Mattel position peaked at $4.48M in Q1 2020.
  • 426 funds tracked by Wall St. Rank held Mattel as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.