Westmount Partners’s Mattel MAT Stock Holding History

Westmount Partners’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	$189K	Hold	13,637	–	–	0.04%	254
2026 Q1	$198K	Hold	13,637	–	–	0.05%	254
2025 Q4	$271K	Hold	13,637	–	–	0.07%	208
2025 Q3	$236K	Hold	13,637	–	–	0.06%	224
2025 Q2	$269K	Hold	13,637	–	–	0.07%	207
2025 Q1	$265K	Hold	13,637	–	–	0.08%	202
2024 Q4	$242K	Hold	13,637	–	–	0.07%	189
2024 Q3	$260K	Hold	13,637	–	–	0.08%	180
2024 Q2	$221K	Buy	+13,637	New	+$247K	0.07%	193

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

Westmount Partners's MAT Position: Q2 2026 in Review

Westmount Partners held its Mattel (MAT) position steady in Q2 2026 at 13,637 shares worth $189K. The position accounts for 0.04% of the portfolio, ranked #254.

Westmount Partners first reported a position in MAT in Q2 2024 and has held it in 9 quarters since. The position peaked at $271K in Q4 2025. 404 funds tracked by Wall St. Rank hold MAT as of Q2 2026.

Westmount Partners held 13,637 shares of Mattel worth $189K as of Q2 2026.
Westmount Partners left its Mattel share count unchanged in Q2 2026.
Mattel made up 0.04% of Westmount Partners's portfolio in Q2 2026, its #254 holding.
Westmount Partners first reported a position in Mattel in Q2 2024 and has held it in 9 quarters since.
Westmount Partners's Mattel position peaked at $271K in Q4 2025.
404 funds tracked by Wall St. Rank held Mattel as of Q2 2026.

Based on Westmount Partners's 13F filing for Q2 2026, filed 7 Jul 2026.