Left Brain Wealth Management
COST icon

Left Brain Wealth Management’s Costco COST Stock Holding History

Left Brain Wealth Management’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 		$5.01M Sell
5,502
-77
-1% -$71.9K 1.58% 25
2026
Q2 		$5.22M Buy
5,579
+10
+0.2% +$10K 1.57% 25
2026
Q1 		$5.55M Buy
5,569
+99
+2% +$96.5K 2.18% 18
2025
Q4 		$4.72M Buy
5,470
+34
+0.6% +$30.8K 1.63% 23
2025
Q3 		$5.03M Buy
5,436
+34
+0.6% +$32.6K 1.58% 23
2025
Q2 		$5.35M Buy
5,402
+161
+3% +$160K 1.88% 21
2025
Q1 		$4.96M Sell
5,241
-55
-1% -$53.6K 2.16% 16
2024
Q4 		$4.85M Sell
5,296
-4
-0.1% -$3.71K 1.83% 18
2024
Q3 		$4.7M Buy
5,300
+38
+0.7% +$33K 2.19% 13
2024
Q2 		$4.47M Buy
5,262
+27
+0.5% +$21.1K 2.09% 14
2024
Q1 		$3.84M Sell
5,235
-21
-0.4% -$15K 1.86% 22
2023
Q4 		$3.47M Buy
5,256
+2
+0% +$1.18K 2.01% 19
2023
Q3 		$2.97M Sell
5,254
-147
-3% -$81.1K 1.85% 19
2023
Q2 		$2.91M Sell
5,401
-280
-5% -$142K 1.77% 20
2023
Q1 		$2.86M Sell
5,681
-101
-2% -$49.5K 1.94% 16
2022
Q4 		$2.64M Buy
+5,782
New +$2.83M 1.98% 20

Other funds holding COST

Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $174B AUM 33.96% 1-Year Est. Return
Everett Harris & Co
Everett Harris & Co Los Angeles, California $8.46B AUM 13.48% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
Emerald Advisors
Emerald Advisors Bellevue, Washington $781M AUM 4.78% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $33.8B AUM 31.08% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return
ProShare Advisors
ProShare Advisors Bethesda, Maryland $69.5B AUM 31.38% 1-Year Est. Return
Bank Julius Baer & Co
Bank Julius Baer & Co Zurich, Switzerland $39.3B AUM 31.81% 1-Year Est. Return
Provident Trust Company
Provident Trust Company Waukesha, Wisconsin $3.22B AUM 13.63% 1-Year Est. Return

Left Brain Wealth Management's COST Position: Q3 2026 in Review

Left Brain Wealth Management reduced its Costco (COST) stake by 1.4% in Q3 2026, selling an estimated $71.9K and leaving 5,502 shares worth $5.01M. The position accounts for 1.58% of the portfolio, ranked #25.

Left Brain Wealth Management first reported a position in COST in Q4 2022 and has held it in 16 quarters since. The position peaked at $5.55M in Q1 2026. 2,117 funds tracked by Wall St. Rank hold COST as of Q3 2026.

  • Left Brain Wealth Management held 5,502 shares of Costco worth $5.01M as of Q3 2026.
  • Left Brain Wealth Management sold 77 Costco shares in Q3 2026, an estimated $71.9K.
  • Costco made up 1.58% of Left Brain Wealth Management's portfolio in Q3 2026, its #25 holding.
  • Left Brain Wealth Management first reported a position in Costco in Q4 2022 and has held it in 16 quarters since.
  • Left Brain Wealth Management's Costco position peaked at $5.55M in Q1 2026.
  • 2,117 funds tracked by Wall St. Rank held Costco as of Q3 2026.

Based on Left Brain Wealth Management's 13F filing for Q3 2026, filed 28 Oct 2026.