Diamant Asset Management’s Costco COST Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $6.32M | Sell |
6,751
-6,720,148
| -100% | -$6.7B | 4.29% | 5 |
|
|
2026
Q1 | $6.73B | Buy |
6,726,899
+6,720,130
| +99,278% | +$6.55B | 4.9% | 5 |
|
|
2025
Q4 | $5.84M | Buy |
6,769
+406
| +6% | +$368K | 4.22% | 5 |
|
|
2025
Q3 | $5.89M | Sell |
6,363
-200
| -3% | -$192K | 4.34% | 5 |
|
|
2025
Q2 | $6.5M | Sell |
6,563
-62
| -0.9% | -$61.6K | 4.95% | 4 |
|
|
2025
Q1 | $6.27M | Sell |
6,625
-1,780
| -21% | -$1.74M | 4.76% | 5 |
|
|
2024
Q4 | $7.7M | Hold |
8,405
| – | – | 4.93% | 5 |
|
|
2024
Q3 | $7.45M | Sell |
8,405
-30
| -0.4% | -$26K | 4.67% | 4 |
|
|
2024
Q2 | $7.17M | Hold |
8,435
| – | – | 4.8% | 5 |
|
|
2024
Q1 | $6.18M | Hold |
8,435
| – | – | 4.29% | 5 |
|
|
2023
Q4 | $5.57M | Hold |
8,435
| – | – | 4.12% | 5 |
|
|
2023
Q3 | $4.77M | Sell |
8,435
-15
| -0.2% | -$8.28K | 3.92% | 5 |
|
|
2023
Q2 | $4.55M | Sell |
8,450
-30
| -0.4% | -$15.2K | 3.48% | 6 |
|
|
2023
Q1 | $4.21M | Hold |
8,480
| – | – | 3.45% | 6 |
|
|
2022
Q4 | $3.87M | Hold |
8,480
| – | – | 3.48% | 6 |
|
|
2022
Q3 | $4M | Hold |
8,480
| – | – | 3.89% | 5 |
|
|
2022
Q2 | $4.06M | Sell |
8,480
-100
| -1% | -$50.7K | 3.66% | 6 |
|
|
2022
Q1 | $4.94M | Hold |
8,580
| – | – | 3.78% | 5 |
|
|
2021
Q4 | $4.87M | Buy |
8,580
+30
| +0.4% | +$15.4K | 3.56% | 5 |
|
|
2021
Q3 | $3.84M | Buy |
+8,550
| New | +$3.76M | 3.18% | 6 |
|
|
2021
Q1 | $3.01M | Hold |
8,550
| – | – | 2.65% | 12 |
|
|
2020
Q4 | $3.22M | Sell |
8,550
-435
| -5% | -$163K | 2.87% | 11 |
|
|
2020
Q3 | $3.19M | Hold |
8,985
| – | – | 3.07% | 6 |
|
|
2020
Q2 | $2.72M | Hold |
8,985
| – | – | 2.87% | 11 |
|
|
2020
Q1 | $2.56M | Sell |
8,985
-840
| -9% | -$255K | 3.31% | 9 |
|
|
2019
Q4 | $2.89M | Hold |
9,825
| – | – | 2.68% | 11 |
|
|
2019
Q3 | $2.83M | Sell |
9,825
-800
| -8% | -$225K | 2.84% | 10 |
|
|
2019
Q2 | $2.81M | Hold |
10,625
| – | – | 2.78% | 11 |
|
|
2019
Q1 | $2.57M | Sell |
10,625
-350
| -3% | -$76.6K | 2.59% | 10 |
|
|
2018
Q4 | $2.24M | Sell |
10,975
-50
| -0.5% | -$11.2K | 2.51% | 12 |
|
|
2018
Q3 | $2.59M | Hold |
11,025
| – | – | 2.4% | 11 |
|
|
2018
Q2 | $2.3M | Buy |
11,025
+275
| +3% | +$54.3K | 2.23% | 13 |
|
|
2018
Q1 | $2.03M | Hold |
10,750
| – | – | 1.99% | 15 |
|
|
2017
Q4 | $2K | Buy |
+10,750
| New | +$1.86M | 0.29% | 17 |
|
Other funds holding COST
Diamant Asset Management's COST Position: Q2 2026 in Review
Diamant Asset Management reduced its Costco (COST) stake by 100% in Q2 2026, selling an estimated $6.7B and leaving 6,751 shares worth $6.32M. The position accounts for 4.29% of the portfolio, ranked #5.
Diamant Asset Management first reported a position in COST in Q4 2017 and has held it in 34 quarters since. The position peaked at $6.73B in Q1 2026. 4,210 funds tracked by Wall St. Rank hold COST as of Q2 2026.
- Diamant Asset Management held 6,751 shares of Costco worth $6.32M as of Q2 2026.
- Diamant Asset Management sold 6,720,148 Costco shares in Q2 2026, an estimated $6.7B.
- Costco made up 4.29% of Diamant Asset Management's portfolio in Q2 2026, its #5 holding.
- Diamant Asset Management first reported a position in Costco in Q4 2017 and has held it in 34 quarters since.
- Diamant Asset Management's Costco position peaked at $6.73B in Q1 2026.
- 4,210 funds tracked by Wall St. Rank held Costco as of Q2 2026.
Based on Diamant Asset Management's 13F filing for Q2 2026, filed 30 Jul 2026.