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 		$72.7K Buy
5,000
+2,600
+108% +$47.4K ﹤0.01% 4983
2025
Q4 		$47.6K Sell
2,400
-192,700
-99% -$3.72M ﹤0.01% 5640
2025
Q3 		$3.28M Buy
195,100
+172,900
+779% +$3.15M 0.01% 1865
2025
Q2 		$438K Buy
22,200
+12,200
+122% +$217K ﹤0.01% 3559
2025
Q1 		$194K Sell
10,000
-18,600
-65% -$369K ﹤0.01% 4044
2024
Q4 		$507K Buy
28,600
+10,200
+55% +$193K ﹤0.01% 3163
2024
Q3 		$351K Buy
18,400
+5,300
+40% +$97.7K ﹤0.01% 3125
2024
Q2 		$213K Sell
13,100
-10,100
-44% -$183K ﹤0.01% 3338
2024
Q1 		$460K Sell
23,200
-28,500
-55% -$540K ﹤0.01% 2828
2023
Q4 		$976K Buy
51,700
+9,800
+23% +$191K ﹤0.01% 2476
2023
Q3 		$923K Buy
41,900
+23,500
+128% +$502K ﹤0.01% 2342
2023
Q2 		$360K Sell
18,400
-16,800
-48% -$303K ﹤0.01% 3360
2023
Q1 		$648K Sell
35,200
-20,800
-37% -$386K ﹤0.01% 2516
2022
Q4 		$999K Sell
56,000
-183,300
-77% -$3.32M ﹤0.01% 2406
2022
Q3 		$4.53M Sell
239,300
-110,900
-32% -$2.48M 0.01% 1238
2022
Q2 		$7.82M Buy
350,200
+259,900
+288% +$6.14M 0.01% 1005
2022
Q1 		$2.01M Sell
90,300
-202,400
-69% -$4.63M ﹤0.01% 2392
2021
Q4 		$6.31M Buy
292,700
+31,700
+12% +$665K 0.01% 1495
2021
Q3 		$4.84M Buy
261,000
+3,100
+1% +$64.3K 0.01% 1723
2021
Q2 		$5.18M Buy
257,900
+79,700
+45% +$1.65M 0.01% 1656
2021
Q1 		$3.55M Sell
178,200
-589,800
-77% -$11.4M 0.01% 1860
2020
Q4 		$13.4M Buy
768,000
+30,100
+4% +$443K 0.02% 639
2020
Q3 		$8.63M Buy
737,900
+57,900
+9% +$643K 0.03% 601
2020
Q2 		$6.58M Sell
680,000
-387,700
-36% -$3.52M 0.03% 636
2020
Q1 		$9.41M Sell
1,067,700
-7,100
-0.7% -$87.1K 0.08% 278
2019
Q4 		$14.6M Buy
1,074,800
+627,500
+140% +$7.44M 0.1% 227
2019
Q3 		$5.09M Sell
447,300
-290,500
-39% -$3.32M 0.04% 560
2019
Q2 		$8.27M Buy
737,800
+588,300
+394% +$6.91M 0.07% 307
2019
Q1 		$1.94M Buy
149,500
+86,500
+137% +$1.16M 0.02% 946
2018
Q4 		$629K Buy
63,000
+32,200
+105% +$427K 0.01% 1846
2018
Q3 		$484K Sell
30,800
-3,700
-11% -$59.2K ﹤0.01% 2319
2018
Q2 		$566K Sell
34,500
-186,200
-84% -$2.83M ﹤0.01% 2195
2018
Q1 		$2.9M Buy
220,700
+9,000
+4% +$140K 0.03% 756
2017
Q4 		$3.26M Buy
211,700
+158,200
+296% +$2.51M 0.02% 884
2017
Q3 		$828K Buy
53,500
+10,800
+25% +$193K 0.01% 1702
2017
Q2 		$919K Buy
42,700
+30,300
+244% +$685K 0.01% 1527
2017
Q1 		$318K Sell
12,400
-7,300
-37% -$196K ﹤0.01% 2189
2016
Q4 		$543K Sell
19,700
-5,300
-21% -$161K 0.01% 1708
2016
Q3 		$757K Sell
25,000
-57,500
-70% -$1.88M 0.01% 1483
2016
Q2 		$2.58M Buy
82,500
+9,900
+14% +$314K 0.03% 672
2016
Q1 		$2.44M Buy
72,600
+4,900
+7% +$149K 0.03% 657
2015
Q4 		$1.84M Buy
67,700
+47,600
+237% +$1.17M 0.02% 912
2015
Q3 		$423K Sell
20,100
-7,800
-28% -$183K 0.01% 1909
2015
Q2 		$717K Sell
27,900
-29,000
-51% -$764K 0.01% 1485
2015
Q1 		$1.3M Buy
56,900
+22,200
+64% +$589K 0.02% 883
2014
Q4 		$1.07M Sell
34,700
-300
-0.9% -$9.23K 0.02% 1029
2014
Q3 		$1.07M Buy
35,000
+24,600
+237% +$870K 0.02% 1069
2014
Q2 		$405K Sell
10,400
-13,700
-57% -$532K 0.01% 1818
2014
Q1 		$967K Buy
24,100
+12,500
+108% +$496K 0.02% 1120
2013
Q4 		$552K Buy
11,600
+10,600
+1,060% +$472K 0.01% 1593
2013
Q3 		$42K Sell
1,000
-16,300
-94% -$697K ﹤0.01% 3665
2013
Q2 		$784K Buy
+17,300
New +$774K 0.02% 987

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.