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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
2026
Q2 		$879K Buy
63,342
+5,170
+9% +$75.6K 0.03% 383
2026
Q1 		$845K Sell
58,172
-13,860
-19% -$253K 0.04% 385
2025
Q4 		$1.43M Sell
72,032
-10,895
-13% -$210K 0.06% 222
2025
Q3 		$1.4M Buy
82,927
+42,684
+106% +$778K 0.06% 238
2025
Q2 		$794K Buy
40,243
+12,140
+43% +$216K 0.04% 407
2025
Q1 		$546K Buy
+28,103
New +$558K 0.03% 448

Other funds holding MAT

EIG
EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 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
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
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
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LSV Asset Management
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. 403 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.
  • 403 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.