Millennium Management
MAT icon

Millennium Management’s Mattel MAT Stock Holding History

Millennium Management’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
2017
Q3 		– Sell
-90,000
Closed -$1.94M – 3711
2017
Q2 		$1.94M Hold
90,000
– – ﹤0.01% 2093
2017
Q1 		$2.31M Buy
+90,000
New +$2.41M ﹤0.01% 1924
2014
Q3 		– Sell
-49,100
Closed -$1.91M – 3873
2014
Q2 		$1.91M Buy
49,100
+600
+1% +$23.3K 0.01% 1812
2014
Q1 		$1.95M Buy
+48,500
New +$1.93M 0.01% 1811

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

Millennium Management's MAT Position: Q2 2026 in Review

Millennium Management reduced its Mattel (MAT) stake by 47% in Q2 2026, selling an estimated $19.3M and leaving 1,480,276 shares worth $20.5M. The position accounts for 0.01% of the portfolio, ranked #1595.

Millennium Management first reported a position in MAT in Q2 2013 and has held it in 47 quarters since. The position peaked at $68M in Q1 2015. 403 funds tracked by Wall St. Rank hold MAT as of Q2 2026.

  • Millennium Management held 1,480,276 shares of Mattel worth $20.5M as of Q2 2026.
  • Millennium Management sold 1,320,859 Mattel shares in Q2 2026, an estimated $19.3M.
  • Mattel made up 0.01% of Millennium Management's portfolio in Q2 2026, its #1595 holding.
  • Millennium Management first reported a position in Mattel in Q2 2013 and has held it in 47 quarters since.
  • Millennium Management's Mattel position peaked at $68M in Q1 2015.
  • 403 funds tracked by Wall St. Rank held Mattel as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.