Oakmont Corp’s Costco COST Stock Holding History

Oakmont Corp’s Portfolio COST Stock Details COST Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$22.6M	Buy	22,716 +581	+3%	+$566K	4.3%	12
2025 Q4	$19.1M	Buy	+22,135	New	+$20.1M	3.3%	12

Other funds holding COST

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

DAM

Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Oakmont Corp's COST Position: Q1 2026 in Review

Oakmont Corp increased its Costco (COST) stake by 2.6% in Q1 2026, buying an estimated $566K and bringing the position to 22,716 shares worth $22.6M. The position accounts for 4.3% of the portfolio, ranked #12.

Oakmont Corp first reported a position in COST in Q4 2025 and has held it in 2 quarters since. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

Oakmont Corp held 22,716 shares of Costco worth $22.6M as of Q1 2026.
Oakmont Corp bought 581 Costco shares in Q1 2026, an estimated $566K.
Costco made up 4.3% of Oakmont Corp's portfolio in Q1 2026, its #12 holding.
Oakmont Corp first reported a position in Costco in Q4 2025 and has held it in 2 quarters since.
4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Oakmont Corp's 13F filing for Q1 2026, filed 12 May 2026.