Dark Forest Capital Management’s Mattel MAT Stock Holding History

Dark Forest Capital 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
2026 Q2	$1.39M	Sell	100,237 -4,686	-4%	-$68.5K	0.09%	396
2026 Q1	$1.52M	Buy	+104,923	New	+$1.91M	0.14%	236
2025 Q4	–	Sell	-295,131	Closed	-$4.97M	–	1193
2025 Q3	$4.97M	Buy	295,131 +227,767	+338%	+$4.15M	0.19%	128
2025 Q2	$1.33M	Sell	67,364 -70,486	-51%	-$1.25M	0.05%	639
2025 Q1	$2.68M	Buy	+137,850	New	+$2.73M	0.12%	273
2024 Q4	–	Sell	-14,556	Closed	-$277K	–	1166
2024 Q3	$277K	Buy	+14,556	New	+$268K	0.04%	673
2023 Q2	–	Sell	-2,620	Closed	-$48.2K	–	1244
2023 Q1	$48.2K	Sell	2,620 -3,202	-55%	-$59.5K	0.01%	847
2022 Q4	$104K	Buy	5,822 +5,582	+2,326%	+$101K	0.03%	354
2022 Q3	$5K	Buy	+240	New	+$5.37K	﹤0.01%	900
2022 Q1	–	Sell	-92	Closed	-$2K	–	1567
2021 Q4	$2K	Sell	92 -5,117	-98%	-$107K	﹤0.01%	1297
2021 Q3	$97K	Buy	+5,209	New	+$108K	0.03%	393

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

Dark Forest Capital Management's MAT Position: Q2 2026 in Review

Dark Forest Capital Management reduced its Mattel (MAT) stake by 4.5% in Q2 2026, selling an estimated $68.5K and leaving 100,237 shares worth $1.39M. The position accounts for 0.09% of the portfolio, ranked #396.

Dark Forest Capital Management first reported a position in MAT in Q3 2021 and has held it in 11 quarters since. The position peaked at $4.97M in Q3 2025. 403 funds tracked by Wall St. Rank hold MAT as of Q2 2026.

Dark Forest Capital Management held 100,237 shares of Mattel worth $1.39M as of Q2 2026.
Dark Forest Capital Management sold 4,686 Mattel shares in Q2 2026, an estimated $68.5K.
Mattel made up 0.09% of Dark Forest Capital Management's portfolio in Q2 2026, its #396 holding.
Dark Forest Capital Management first reported a position in Mattel in Q3 2021 and has held it in 11 quarters since.
Dark Forest Capital Management's Mattel position peaked at $4.97M in Q3 2025.
403 funds tracked by Wall St. Rank held Mattel as of Q2 2026.

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