Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionFirst Foundation Advisors
Latest Disclosed Ownership14,318 shares
Latest Disclosed Value $ 14,266,921
First Foundation Advisors reports 0.74% decrease in ownership of CTO / Costco Wholesale Corporation

On May 4, 2026 - First Foundation Advisors filed a 13F-HR form disclosing ownership of 14,318 shares of Costco Wholesale Corporation (DE:CTO) valued at $12,440,910 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 14,425 shares of Costco Wholesale Corporation. This represents a change in shares of -0.74% during the quarter. The current value of the position is $12,070,074 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)
2026-05-04 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 14,318 -107 -0.74 14,267 14.69 0.5170
2026-02-04 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 14,425 -111 -0.76 12,440 -7.55 0.4687
2025-11-17 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 14,536 -919 -5.95 13,455 -12.05 0.4973
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 15,455 233 1.53 15,299 6.27 0.5669
2025-05-08 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 15,222 342 2.30 14,397 5.59 0.5860
2025-02-13 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 14,880 573 4.01 13,634 7.50 0.5130
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 14,307 -2,050 -12.53 12,684 -8.78 0.4778
2024-08-06 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 16,357 514 3.24 13,903 19.79 0.5313
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 15,843 793 5.27 11,607 16.84 0.4644
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 15,050 -1,940 -11.42 9,934 3.49 0.4527
2023-11-15 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 16,990 1,290 8.22 9,599 13.56 0.4484
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 15,700 -570 -3.50 8,453 4.55 0.3653
2023-05-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 16,270 852 5.53 8,084 14.86 0.3717
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 15,418 207 1.36 7,038 -2.03 0.3371
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 15,211 -1,233 -7.50 7,184 -8.84 0.3518
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 16,444 -1,111 -6.33 7,881 -22.04 0.3481
2022-05-05 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 17,555 -260 -1.46 10,109 -0.04 0.3650
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 17,815 -38,608 -68.43 10,113 -60.11 0.3476
2021-11-15 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 56,423 3,029 5.67 25,354 20.01 0.9464
2021-08-13 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 53,394 3,561 7.15 21,126 20.27 0.8135
2021-05-18 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 49,833 36,056 261.71 17,565 238.37 0.7532
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 13,777 2,704 24.42 5,191 32.05 0.2301
2020-11-12 2020-09-30 13F Costco Wholesale COM 22160K105 11,073 700 6.75 3,931 24.99 0.1824
2020-08-14 2020-06-30 13F Costco Wholesale COM 22160K105 10,373 136 1.33 3,145 7.74 0.1621
2020-05-11 2020-03-31 13F Costco Wholesale COM 22160K105 10,237 2,265 28.41 2,919 24.58 0.1789
2020-02-11 2019-12-31 13F Costco Wholesale COM 22160K105 7,972 -421 -5.02 2,343 -3.10 0.1159
2019-11-12 2019-09-30 13F Costco Wholesale COM 22160K105 8,393 -10 -0.12 2,418 8.87 0.1291
2019-08-14 2019-06-30 13F Costco Wholesale COM 22160K105 8,403 1,161 16.03 2,221 26.62 0.1244
2019-05-13 2019-03-31 13F Costco Wholesale COM 22160K105 7,242 -464 -6.02 1,754 11.72 0.1040
2019-02-14 2018-12-31 13F Costco Wholesale COM 22160K105 7,706 1,109 16.81 1,570 1.29 0.0991
2018-11-13 2018-09-30 13F Costco Wholesale COM 22160K105 6,597 1 0.02 1,550 12.48 0.0858
2018-08-14 2018-06-30 13F Costco Wholesale COM 22160K105 6,596 435 7.06 1,378 18.69 0.0810
2018-05-15 2018-03-31 13F Costco Wholesale COM 22160K105 6,161 -220 -3.45 1,161 -2.27 0.0648
2018-02-14 2017-12-31 13F Costco Wholesale COM 22160K105 6,381 -922 -12.62 1,188 -1.00 0.0641
2017-11-14 2017-09-30 13F Costco Wholesale COM 22160K105 7,303 852 13.21 1,200 16.28 0.0681
2017-08-14 2017-06-30 13F Costco Wholesale COM 22160K105 6,451 -922 -12.51 1,032 -16.50 0.0607
2017-05-05 2017-03-31 13F Costco Wholesale COM 22160K105 7,373 993 15.56 1,236 20.94 0.0765
2017-02-14 2016-12-31 13F Costco Wholesale COM 22160K105 6,380 -100 -1.54 1,022 3.44 0.0669
2016-11-14 2016-09-30 13F Costco Wholesale COM 22160K105 6,480 1,216 23.10 988 19.47 0.0683
2016-08-16 2016-06-30 13F Costco Wholesale COM 22160K105 5,264 -236 -4.29 827 -4.61 0.0593
2016-05-13 2016-03-31 13F Costco Wholesale COM 22160K105 5,500 280 5.36 867 2.85 0.0630
2016-02-16 2015-12-31 13F Costco Wholesale COM 22160K105 5,220 1,149 28.22 843 43.12 0.0577
2015-11-16 2015-09-30 13F Costco Wholesale COM 22160K105 4,071 400 10.90 589 18.75 0.0484
2015-08-13 2015-06-30 13F Costco Wholesale COM 22160K105 3,671 -617 -14.39 496 -23.69 0.0394
2015-05-14 2015-03-31 13F Costco Wholesale COM 22160K105 4,288 662 18.26 650 26.46 0.0544
2015-02-17 2014-12-31 13F Costco Wholesale COM 22160K105 3,626 70 1.97 514 15.25 0.0453
2014-11-14 2014-09-30 13F Costco Wholesale COM 22160K105 3,556 209 6.24 446 15.84 0.0444
2014-08-15 2014-06-30 13F Costco Wholesale COM 22160K105 3,347 1,072 47.12 385 51.57 0.0420
2014-05-15 2014-03-31 13F Costco Wholesale COM 22160K105 2,275 2,275 254 0.0315
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.