UOC
MAT icon

UBS O'Connor’s Mattel MAT Stock Holding History

UBS O'Connor’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
2025
Q4 		$19.3M Buy
973,829
+30,600
+3% +$591K 0.51% 19
2025
Q3 		$15.9M Buy
943,229
+100,000
+12% +$1.82M 0.48% 27
2025
Q2 		$16.6M Sell
843,229
-125,800
-13% -$2.24M 0.45% 30
2025
Q1 		$18.8M Hold
969,029
– – 0.45% 24
2024
Q4 		$17.2M Hold
969,029
– – 0.43% 34
2024
Q3 		$18.5M Hold
969,029
– – 0.46% 26
2024
Q2 		$15.8M Hold
969,029
– – 0.44% 30
2024
Q1 		$19.2M Hold
969,029
– – 0.55% 22
2023
Q4 		$18.3M Buy
969,029
+50,000
+5% +$973K 0.57% 20
2023
Q3 		$20.2M Buy
919,029
+86,000
+10% +$1.84M 0.36% 22
2023
Q2 		$16.3M Sell
833,029
-65,807
-7% -$1.19M 0.34% 46
2023
Q1 		$16.5M Hold
898,836
– – 0.39% 43
2022
Q4 		$16M Hold
898,836
– – 0.3% 47
2022
Q3 		$17M Hold
898,836
– – 0.19% 64
2022
Q2 		$20.1M Sell
898,836
-68,915
-7% -$1.63M 0.21% 55
2022
Q1 		$21.5M Buy
967,751
+36,998
+4% +$846K 0.24% 48
2021
Q4 		$20.1M Buy
930,753
+126,533
+16% +$2.65M 0.19% 49
2021
Q3 		$14.9M Buy
804,220
+90,849
+13% +$1.88M 0.12% 72
2021
Q2 		$14.3M Buy
713,371
+16,880
+2% +$349K 0.13% 80
2021
Q1 		$13.9M Buy
696,491
+283,231
+69% +$5.48M 0.2% 75
2020
Q4 		$7.21M Buy
413,260
+400,000
+3,017% +$5.89M 0.15% 129
2020
Q3 		$155K Hold
13,260
– – ﹤0.01% 284
2020
Q2 		$128K Hold
13,260
– – ﹤0.01% 365
2020
Q1 		$117K Buy
+13,260
New +$163K ﹤0.01% 312
2017
Q2 		– Sell
-668,326
Closed -$17.1M – 444
2017
Q1 		$17.1M Buy
+668,326
New +$17.9M 0.29% 90
2015
Q2 		– Sell
-1,083,286
Closed -$24.8M – 878
2015
Q1 		$24.8M Buy
1,083,286
+1,068,763
+7,359% +$28.4M 0.24% 122
2014
Q4 		$449K Buy
+14,523
New +$447K 0.01% 446

Other funds holding MAT

EIG
EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SAM
Southeastern Asset Management Memphis, Tennessee $1.92B AUM 6.41% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

UBS O'Connor's MAT Position: Q4 2025 in Review

UBS O'Connor increased its Mattel (MAT) stake by 3.2% in Q4 2025, buying an estimated $591K and bringing the position to 973,829 shares worth $19.3M. The position accounts for 0.51% of the portfolio, ranked #19.

UBS O'Connor first reported a position in MAT in Q4 2014 and has held it in 27 quarters since. The position peaked at $24.8M in Q1 2015. 441 funds tracked by Wall St. Rank hold MAT as of Q4 2025.

  • UBS O'Connor held 973,829 shares of Mattel worth $19.3M as of Q4 2025.
  • UBS O'Connor bought 30,600 Mattel shares in Q4 2025, an estimated $591K.
  • Mattel made up 0.51% of UBS O'Connor's portfolio in Q4 2025, its #19 holding.
  • UBS O'Connor first reported a position in Mattel in Q4 2014 and has held it in 27 quarters since.
  • UBS O'Connor's Mattel position peaked at $24.8M in Q1 2015.
  • 441 funds tracked by Wall St. Rank held Mattel as of Q4 2025.

Based on UBS O'Connor's 13F filing for Q4 2025, filed 13 Feb 2026.