Quantum Portfolio Management LLC
Position in COST — Costco Wholesale Corp /New
CIK 2003672
New York, NY
Position in COST
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,396,656
-$82,046 QoQ
Shares Held
1,493
+0.6% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.71%
of 13F equity value
Holder Rank
#2,259
of 4,178 holders
Holding Since
Dec 2023
11 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in COST Over Time
Shares Held
Position Value (USD)
Position in Discount Stores
Consumer Defensive · as of Jun 30, 2026Quantum Portfolio Management LLC holds $2,429,994 across 3 Discount Stores names. COST ranks #1 (57.5% of the industry book) .
All Filings in COST
Export CSV
11 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,396,656 | 1,493 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $1,478,702 | 1,484 | Shares | Sole | 2026-05-01 | |
| 2025-12-31 | $1,306,445 | 1,515 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $1,877,177 | 2,028 | Shares | Sole | 2025-10-29 | |
| 2025-06-30 | $1,569,054 | 1,585 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $1,326,929 | 1,403 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $1,231,466 | 1,344 | Shares | Sole | 2025-01-23 | |
| 2024-09-30 | $1,161,341 | 1,310 | Shares | Sole | 2024-10-24 | |
| 2024-06-30 | $1,433,933 | 1,687 | Shares | Sole | 2024-08-06 | |
| 2024-03-31 | $1,001,505 | 1,367 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $525,423 | 796 | Shares | Sole | 2024-01-26 | |
| No filing history on record for this holder in this stock. | ||||||