CSS LLC’s Mattel MAT Stock Holding History

CSS LLC’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 Q2	–	Sell	-10,000	Closed	-$194K	–	1075
2025 Q1	$194K	Buy	+10,000	New	+$198K	0.01%	718

Other funds holding MAT

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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 Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return

CSS LLC's MAT Position: Q2 2026 in Review

CSS LLC increased its Mattel (MAT) stake by 8.9% in Q2 2026, buying an estimated $75.6K and bringing the position to 63,342 shares worth $879K. The position accounts for 0.03% of the portfolio, ranked #383.

CSS LLC first reported a position in MAT in Q1 2025 and has held it in 6 quarters since. The position peaked at $1.43M in Q4 2025. 404 funds tracked by Wall St. Rank hold MAT as of Q2 2026.

CSS LLC held 63,342 shares of Mattel worth $879K as of Q2 2026.
CSS LLC bought 5,170 Mattel shares in Q2 2026, an estimated $75.6K.
Mattel made up 0.03% of CSS LLC's portfolio in Q2 2026, its #383 holding.
CSS LLC first reported a position in Mattel in Q1 2025 and has held it in 6 quarters since.
CSS LLC's Mattel position peaked at $1.43M in Q4 2025.
404 funds tracked by Wall St. Rank held Mattel as of Q2 2026.

Based on CSS LLC's 13F filing for Q2 2026, filed 14 Aug 2026.