Cornerstone Advisory
COST icon

Cornerstone Advisory’s Costco COST Stock Holding History

Cornerstone Advisory’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 		$2.92M Buy
3,209
+140
+5% +$131K 0.23% 70
2026
Q2 		$2.87M Sell
3,069
-2
-0.1% -$1.99K 0.24% 70
2026
Q1 		$3.06M Buy
3,071
+107
+4% +$104K 0.29% 59
2025
Q4 		$2.56M Buy
2,964
+653
+28% +$592K 0.24% 65
2025
Q3 		$2.14M Sell
2,311
-74
-3% -$70.9K 0.21% 66
2025
Q2 		$2.36M Buy
2,385
+14
+0.6% +$13.9K 0.25% 61
2025
Q1 		$2.4M Sell
2,371
-59
-2% -$57.5K 0.28% 57
2024
Q4 		$2.6M Buy
2,430
+114
+5% +$106K 0.3% 56
2024
Q3 		$2.05M Buy
2,316
+140
+6% +$122K 0.27% 62
2024
Q2 		$1.85M Buy
2,176
+37
+2% +$28.9K 0.26% 61
2024
Q1 		$1.57M Buy
2,139
+179
+9% +$128K 0.22% 67
2023
Q4 		$1.29M Buy
1,960
+206
+12% +$122K 0.2% 71
2023
Q3 		$991K Buy
1,754
+49
+3% +$27K 0.17% 79
2023
Q2 		$918K Sell
1,705
-84
-5% -$42.5K 0.16% 87
2023
Q1 		$889K Buy
1,789
+475
+36% +$233K 0.16% 91
2022
Q4 		$600K Buy
1,314
+5
+0.4% +$2.44K 0.12% 115
2022
Q3 		$618K Buy
1,309
+9
+0.7% +$4.68K 0.14% 101
2022
Q2 		$624K Sell
1,300
-339
-21% -$172K 0.14% 101
2022
Q1 		$944K Sell
1,639
-94
-5% -$49.3K 0.14% 112
2021
Q4 		$984K Sell
1,733
-456
-21% -$234K 0.14% 111
2021
Q3 		$984K Buy
2,189
+25
+1% +$11K 0.16% 102
2021
Q2 		$856K Buy
2,164
+206
+11% +$77.9K 0.14% 112
2021
Q1 		$690K Buy
1,958
+1
+0.1% +$348 0.13% 127
2020
Q4 		$737K Sell
1,957
-250
-11% -$93.4K 0.15% 115
2020
Q3 		$784K Hold
2,207
– – 0.18% 100
2020
Q2 		$669K Buy
2,207
+348
+19% +$106K 0.17% 95
2020
Q1 		$530K Buy
1,859
+873
+89% +$265K 0.16% 87
2019
Q4 		$290K Buy
986
+20
+2% +$5.94K 0.06% 143
2019
Q3 		$278K Buy
966
+166
+21% +$46.7K 0.06% 135
2019
Q2 		$211K Buy
+800
New +$199K 0.05% 151

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

Cornerstone Advisory's COST Position: Q3 2026 in Review

Cornerstone Advisory increased its Costco (COST) stake by 4.6% in Q3 2026, buying an estimated $131K and bringing the position to 3,209 shares worth $2.92M. The position accounts for 0.23% of the portfolio, ranked #70.

Cornerstone Advisory first reported a position in COST in Q2 2019 and has held it in 30 quarters since. The position peaked at $3.06M in Q1 2026. 2,678 funds tracked by Wall St. Rank hold COST as of Q3 2026.

  • Cornerstone Advisory held 3,209 shares of Costco worth $2.92M as of Q3 2026.
  • Cornerstone Advisory bought 140 Costco shares in Q3 2026, an estimated $131K.
  • Costco made up 0.23% of Cornerstone Advisory's portfolio in Q3 2026, its #70 holding.
  • Cornerstone Advisory first reported a position in Costco in Q2 2019 and has held it in 30 quarters since.
  • Cornerstone Advisory's Costco position peaked at $3.06M in Q1 2026.
  • 2,678 funds tracked by Wall St. Rank held Costco as of Q3 2026.

Based on Cornerstone Advisory's 13F filing for Q3 2026, filed 6 Nov 2026.