Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionSpire Wealth Management
Latest Disclosed Ownership29,798 shares
Latest Disclosed Value $ 29,691,708
Spire Wealth Management reports 4.92% increase in ownership of COST / Costco Wholesale Corporation

On April 22, 2026 - Spire Wealth Management filed a 13F-HR form disclosing ownership of 29,798 shares of Costco Wholesale Corporation (US:COST) valued at $29,691,621 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 28,400 shares of Costco Wholesale Corporation. This represents a change in shares of 4.92% during the quarter. The current value of the position is $28,660,610 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-22 2026-03-31 13F COSTCO WHSL CORP COM 22160K105 29,798 1,398 4.92 29,692 21.24 0.6399
2026-01-14 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 28,400 477 1.71 24,490 -5.24 0.8201
2025-10-23 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 27,923 1,602 6.09 25,846 -0.10 0.8796
2025-08-04 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 26,321 -8,560 -24.54 25,871 -21.58 0.9292
2025-04-23 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 34,881 464 1.35 32,990 4.61 1.0561
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 34,417 668 1.98 31,535 5.40 0.9794
2024-10-15 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 33,749 4,459 15.22 29,919 20.25 1.0087
2024-07-31 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 29,290 -2,221 -7.05 24,881 -31.38 0.8779
2024-04-24 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 31,511 -3,191 -9.20 36,259 50.36 0.6583
2024-02-06 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 34,702 4,478 14.82 24,116 41.23 0.7968
2023-11-08 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 30,224 -6,756 -18.27 17,076 -14.23 0.6500
2023-08-09 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 36,980 -7,993 -17.77 19,909 -10.90 0.7351
2023-05-09 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 44,973 11,367 33.82 22,346 148,866.67 0.8702
2023-02-03 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 33,606 -2,103 -5.89 15 -99.91 0.8631
2022-11-07 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 35,709 -12,788 -26.37 16,864 -27.45 1.0241
2022-07-22 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 48,497 -16,309 -25.17 23,244 -37.79 0.9577
2022-04-18 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 64,806 -10,805 -14.29 37,363 -12.93 1.0003
2022-01-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 75,611 8,849 13.25 42,911 42.37 0.9521
2021-10-22 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 66,762 744 1.13 30,141 14.59 0.7985
2021-07-26 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 66,018 -9,636 -12.74 26,304 -0.16 0.7118
2021-05-21 2021-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 75,654 75,654 26,345 0.7009
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.