Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionIngalls & Snyder Llc
Latest Disclosed Ownership1,825 shares
Latest Disclosed Value $ 1,818
Ingalls & Snyder Llc reports 31.93% decrease in ownership of COST / Costco Wholesale Corporation

On May 13, 2026 - Ingalls & Snyder Llc filed a 13F-HR form disclosing ownership of 1,825 shares of Costco Wholesale Corporation (US:COST) valued at $1,818,485 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,681 shares of Costco Wholesale Corporation. This represents a change in shares of -31.93% during the quarter. The current value of the position is $1,773,663 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)
2026-05-13 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 1,825 -856 -31.93 2 -50.00 0.0643
2026-02-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 2,681 54 2.06 2 0.00 0.0849
2025-11-07 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 2,627 -2 -0.08 2 0.00 0.0795
2025-07-31 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 2,629 229 9.54 3 0.00 0.0923
2025-05-12 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 2,400 437 22.26 2 100.00 0.0747
2025-01-29 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 1,963 254 14.86 2 0.00 0.0706
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 1,709 180 11.77 2 0.00 0.0591
2024-07-31 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 1,529 44 2.96 1 0.00 0.0559
2024-05-13 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 1,485 -1 -0.07 1 0.0480
2024-01-29 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 1,486 -110 -6.89 1 0.0444
2023-11-02 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,596 259 19.37 1 0.0434
2023-07-27 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,337 -610 -31.33 1 0.0345
2023-05-09 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 1,947 6 0.31 1 0.0497
2023-01-31 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 1,941 -5 -0.26 1 -100.00 0.0482
2022-10-21 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 1,946 34 1.78 919 0.33 0.0513
2022-08-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,912 0 0.00 916 -16.80 0.0479
2022-05-09 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 1,912 -18 -0.93 1,101 0.46 0.0492
2022-02-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,930 54 2.88 1,096 30.01 0.0494
2021-10-27 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 1,876 186 11.01 843 26.01 0.0386
2021-08-03 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 1,690 6 0.36 669 12.63 0.0297
2021-04-21 2021-03-31 13F COSTCO WHSL CORP CO 22160K105 1,684 -335 -16.59 594 -21.94 0.0277
2021-01-27 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 2,019 303 17.66 761 24.96 0.0376
2020-10-21 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,716 60 3.62 609 21.31 0.0418
2020-07-31 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,656 -750 -31.17 502 -26.82 0.0288
2020-04-22 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 2,406 -104 -4.14 686 -7.05 0.0462
2020-01-15 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 2,510 383 18.01 738 20.39 0.0400
2019-10-16 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 2,127 -1 -0.05 613 9.07 0.0299
2019-07-11 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 2,128 -139 -6.13 562 2.37 0.0270
2019-04-11 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 2,267 0 0.00 549 18.83 0.0262
2019-01-24 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,267 5 0.22 462 -12.99 0.0244
2018-10-24 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 2,262 2,262 531 0.0224
2018-08-10 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -1,312 -100.00 0 -100.00
2018-04-17 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 1,312 0 0.00 247 1.23 0.0120
2018-01-19 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 1,312 -2,603 -66.49 244 -62.05 0.0112
2017-10-20 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 3,915 -319 -7.53 643 -5.02 0.0335
2017-07-28 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 4,234 108 2.62 677 -2.17 0.0368
2017-05-09 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 4,126 2,483 151.13 692 163.12 0.0369
2017-01-25 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 1,643 -50 -2.95 263 1.94 0.0143
2016-11-03 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 1,693 0 0.00 258 -3.01 0.0144
2016-08-11 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 1,693 135 8.66 266 8.57 0.0157
2016-04-29 2016-03-31 13F COSTCO WHOLESALE COMMON 022160K10 1,558 15 0.97 245 -1.61 0.0156
2016-01-27 2015-12-31 13F COSTCO WHOLESALE COMMON 022160K10 1,543 38 2.52 249 14.75 0.0159
2015-10-27 2015-09-30 13F COSTCO WHOLESALE COMMON 022160K10 1,505 -990 -39.68 217 -21.94 0.0142
2014-05-02 2014-03-31 13F COSTCO WHOLESALE COMMON 022160K10 2,495 25 1.01 278 -5.12 0.0149
2014-01-24 2013-12-31 13F COSTCO WHOLESALE COMMON 022160K10 2,470 0 0.00 293 3.17 0.0161
2013-11-12 2013-09-30 13F COSTCO WHOLESALE COMMON 022160K10 2,470 0 0.00 284 4.03 0.0170
2013-08-09 2013-06-30 13F/A-1 COSTCO WHOLESALE COMMON 022160K10 2,470 2,470 273 0.0174
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.