Mattern Capital Management’s Palantir PLTR Stock Holding History

Mattern Capital Management’s Portfolio PLTR Stock Details PLTR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$548K	Buy	4,697 +66	+1%	+$9K	0.06%	132
2026 Q1	$677K	Hold	4,631	–	–	0.08%	126
2025 Q4	$823K	Sell	4,631 -179	-4%	-$32.4K	0.1%	126
2025 Q3	$877K	Hold	4,810	–	–	0.1%	124
2025 Q2	$656K	Buy	4,810 +260	+6%	+$30.5K	0.08%	129
2025 Q1	$384K	Sell	4,550 -6	-0.1%	-$527	0.05%	141
2024 Q4	$345K	Buy	+4,556	New	+$265K	0.04%	137

Other funds holding PLTR

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Mattern Capital Management's PLTR Position: Q2 2026 in Review

Mattern Capital Management increased its Palantir (PLTR) stake by 1.4% in Q2 2026, buying an estimated $9K and bringing the position to 4,697 shares worth $548K. The position accounts for 0.06% of the portfolio, ranked #132.

Mattern Capital Management first reported a position in PLTR in Q4 2024 and has held it in 7 quarters since. The position peaked at $877K in Q3 2025. 2,845 funds tracked by Wall St. Rank hold PLTR as of Q2 2026.

Mattern Capital Management held 4,697 shares of Palantir worth $548K as of Q2 2026.
Mattern Capital Management bought 66 Palantir shares in Q2 2026, an estimated $9K.
Palantir made up 0.06% of Mattern Capital Management's portfolio in Q2 2026, its #132 holding.
Mattern Capital Management first reported a position in Palantir in Q4 2024 and has held it in 7 quarters since.
Mattern Capital Management's Palantir position peaked at $877K in Q3 2025.
2,845 funds tracked by Wall St. Rank held Palantir as of Q2 2026.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.