PEAK6’s Mattel MAT Stock Holding History

PEAK6’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	–	Sell	-34,100	Closed	-$574K	–	3154
2025 Q3	$574K	Sell	34,100 -185,500	-84%	-$3.38M	﹤0.01%	2086
2025 Q2	$4.33M	Buy	+219,600	New	+$3.91M	0.01%	1035

Other funds holding MAT

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

SAM

Southeastern Asset Management Memphis, Tennessee $2.03B AUM 7.06% 1-Year Est. Return

Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

PEAK6's MAT Position: Q4 2025 in Review

PEAK6 sold out of Mattel (MAT) in Q4 2025, closing a stake of 932 shares — an estimated $15.7K sold.

PEAK6 first reported a position in MAT in Q3 2025 and held it in 1 quarter. The position peaked at $15.7K in Q3 2025. 441 funds tracked by Wall St. Rank hold MAT as of Q4 2025.

PEAK6 reported no remaining Mattel position as of Q4 2025 after selling out during the quarter.
PEAK6 sold 932 Mattel shares in Q4 2025, an estimated $15.7K.
PEAK6 first reported a position in Mattel in Q3 2025 and held it in 1 quarter.
PEAK6's Mattel position peaked at $15.7K in Q3 2025.
441 funds tracked by Wall St. Rank held Mattel as of Q4 2025.

Based on PEAK6's 13F filing for Q4 2025, filed 13 Feb 2026.