Promethium Advisors
COST icon

Promethium Advisors’s Costco COST Stock Holding History

Promethium Advisors’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
Q3 		$296K Hold
325
– – 0.15% 93
2026
Q2 		$304K Hold
325
– – 0.15% 101
2026
Q1 		$324K Hold
325
– – 0.17% 89
2025
Q4 		$280K Hold
325
– – 0.15% 95
2025
Q3 		$301K Hold
325
– – 0.17% 98
2025
Q2 		$322K Hold
325
– – 0.2% 95
2025
Q1 		$307K Sell
325
-16
-5% -$15.6K 0.2% 96
2024
Q4 		$312K Sell
341
-10
-3% -$9.28K 0.21% 101
2024
Q3 		$311K Buy
+351
New +$305K 0.22% 102

Other funds holding COST

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fisher Asset Management
Fisher Asset Management Camas, Washington $348B AUM 26.9% 1-Year Est. Return
Amundi
Amundi Paris, France $496B AUM 35.36% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $362B AUM 34.89% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $313B AUM 26.62% 1-Year Est. Return
Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $194B AUM 32.2% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $468B AUM 17.69% 1-Year Est. Return

Promethium Advisors's COST Position: Q3 2026 in Review

Promethium Advisors held its Costco (COST) position steady in Q3 2026 at 325 shares worth $296K. The position accounts for 0.15% of the portfolio, ranked #93.

Promethium Advisors first reported a position in COST in Q3 2024 and has held it in 9 quarters since. The position peaked at $324K in Q1 2026. 2,803 funds tracked by Wall St. Rank hold COST as of Q3 2026.

  • Promethium Advisors held 325 shares of Costco worth $296K as of Q3 2026.
  • Promethium Advisors left its Costco share count unchanged in Q3 2026.
  • Costco made up 0.15% of Promethium Advisors's portfolio in Q3 2026, its #93 holding.
  • Promethium Advisors first reported a position in Costco in Q3 2024 and has held it in 9 quarters since.
  • Promethium Advisors's Costco position peaked at $324K in Q1 2026.
  • 2,803 funds tracked by Wall St. Rank held Costco as of Q3 2026.

Based on Promethium Advisors's 13F filing for Q3 2026, filed 19 Oct 2026.