Calamos Advisors’s Costco COST Stock Holding History
Bought
Maintained
Sold
Other funds holding COST
Calamos Advisors's COST Position: Q2 2026 in Review
Calamos Advisors reduced its Costco (COST) stake by 12% in Q2 2026, selling an estimated $10.6M and leaving 80,404 shares worth $75.2M. The position accounts for 0.25% of the portfolio, ranked #83.
Calamos Advisors first reported a position in COST in Q2 2013 and has held it in 53 quarters since. The position peaked at $109M in Q3 2014. 4,238 funds tracked by Wall St. Rank hold COST as of Q2 2026.
- Calamos Advisors held 80,404 shares of Costco worth $75.2M as of Q2 2026.
- Calamos Advisors sold 10,602 Costco shares in Q2 2026, an estimated $10.6M.
- Costco made up 0.25% of Calamos Advisors's portfolio in Q2 2026, its #83 holding.
- Calamos Advisors first reported a position in Costco in Q2 2013 and has held it in 53 quarters since.
- Calamos Advisors's Costco position peaked at $109M in Q3 2014.
- 4,238 funds tracked by Wall St. Rank held Costco as of Q2 2026.
Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.