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Byrne Asset Management’s Costco COST Stock Holding History

Byrne Asset 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 		$109K Buy
119
+5
+4% +$4.67K 0.06% 219
2026
Q2 		$107K Sell
114
-55
-33% -$54.8K 0.06% 237
2026
Q1 		$168K Sell
169
-1
-0.6% -$975 0.1% 152
2025
Q4 		$147K Hold
170
– – 0.08% 168
2025
Q3 		$157K Sell
170
-2
-1% -$1.92K 0.1% 124
2025
Q2 		$170K Buy
172
+5
+3% +$4.97K 0.11% 120
2025
Q1 		$158K Sell
167
-28
-14% -$27.3K 0.12% 120
2024
Q4 		$179K Buy
195
+4
+2% +$3.71K 0.13% 114
2024
Q3 		$169K Buy
191
+2
+1% +$1.74K 0.12% 124
2024
Q2 		$161K Buy
+189
New +$147K 0.11% 122
2024
Q1 		– Sell
-197
Closed -$141K – 138
2023
Q4 		$131K Hold
197
– – 0.1% 131
2023
Q3 		$111K Sell
197
-25
-11% -$13.8K 0.09% 134
2023
Q2 		$120K Hold
222
– – 0.08% 178
2023
Q1 		$110K Buy
222
+32
+17% +$15.7K 0.08% 173
2022
Q4 		$86.7K Buy
+190
New +$92.8K 0.06% 184

Other funds holding COST

CAM
Congress Asset Management Boston, Massachusetts $15.4B AUM 30.35% 1-Year Est. Return
SC
Steginsky Capital Port Washington, New York $610M AUM 12.34% 1-Year Est. Return
MSV
MN Services Vermogensbeheer The Hague, Netherlands $13.4B AUM 37.34% 1-Year Est. Return
SC
Sapient Capital Indianapolis, Indiana $7.44B AUM 23.27% 1-Year Est. Return
NFGCM
Norman Fields Gottscho Capital Management New York $329M AUM 22.06% 1-Year Est. Return
VCM
Violich Capital Management San Francisco, California $927M AUM 28.93% 1-Year Est. Return
YIA
YHB Investment Advisors West Hartford, Connecticut $1.59B AUM 21.04% 1-Year Est. Return
LC
Lincoln Capital Lincoln, Nebraska $570M AUM 10.88% 1-Year Est. Return
PNC
Park National Corp Newark, Ohio $3.69B AUM 18.32% 1-Year Est. Return
FFA
Farther Finance Advisors San Francisco, California $14.2B AUM 18.33% 1-Year Est. Return

Byrne Asset Management's COST Position: Q3 2026 in Review

Byrne Asset Management increased its Costco (COST) stake by 4.4% in Q3 2026, buying an estimated $4.67K and bringing the position to 119 shares worth $109K. The position accounts for 0.06% of the portfolio, ranked #219.

Byrne Asset Management first reported a position in COST in Q4 2022 and has held it in 15 quarters since. The position peaked at $179K in Q4 2024. 231 funds tracked by Wall St. Rank hold COST as of Q3 2026.

  • Byrne Asset Management held 119 shares of Costco worth $109K as of Q3 2026.
  • Byrne Asset Management bought 5 Costco shares in Q3 2026, an estimated $4.67K.
  • Costco made up 0.06% of Byrne Asset Management's portfolio in Q3 2026, its #219 holding.
  • Byrne Asset Management first reported a position in Costco in Q4 2022 and has held it in 15 quarters since.
  • Byrne Asset Management's Costco position peaked at $179K in Q4 2024.
  • 231 funds tracked by Wall St. Rank held Costco as of Q3 2026.

Based on Byrne Asset Management's 13F filing for Q3 2026, filed 6 Oct 2026.