Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership19,270 shares
Latest Disclosed Value $ 19,201,206
Capital Fund Management S.a. ownership in COST / Costco Wholesale Corporation

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 19,270 shares of Costco Wholesale Corporation (MX:COST) valued at $19,201,206 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 21,376 shares of Costco Wholesale Corporation. This represents a change in shares of -9.85% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (COST) in the form of stock options. The firm currently holds call options representing 53,700 of underlying shares valued at $53,508,291 USD and put options representing 31,500 of underlying shares valued at $31,387,545 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:COST / Costco Wholesale Corporation Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM COSTCO WHOLESALE CORPORATION COM 22160K105 19,270 -2,106 -9.85 19,201 4.17 0.0868
2026-02-17 2025-12-31 13F COSTCO WHSL CORP NEW COM COSTCO WHSL CORP NEW COM 22160K105 21,376 -6,784 -24.09 18,433 -29.28 0.0512
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 28,160 9,775 53.17 26,066 43.21 0.0683
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 18,385 18,385 18,200 0.0501
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 0 -24,825 -100.00 0 -100.00
2024-08-13 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 24,825 24,825 21,101 0.0620
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -26,783 -100.00 0 -100.00
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 26,783 -43,084 -61.67 13,308 -58.28 0.0636
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 69,867 -34,894 -33.31 31,894 -35.54 0.2142
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 104,761 51,961 98.41 49,475 95.51 0.3887
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 52,800 382 0.73 25,306 -16.16 0.2301
2022-05-12 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 52,418 19,736 60.39 30,185 62.69 0.2465
2022-02-10 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 32,682 -11,816 -26.55 18,554 -7.21 0.1336
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 44,498 30,507 218.05 19,995 261.25 0.1481
2021-08-12 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 13,991 -242 -1.70 5,536 10.35 0.0438
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 14,233 14,233 1.73 5,017 -9.38 0.0554
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -42,944 -100.00 0 -100.00
2020-11-13 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 42,944 -7,579 -15.00 15,245 -0.48 0.1883
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 50,523 -14,845 -22.71 15,319 -17.81 0.2431
2020-05-13 2020-03-31 13F Costco Wholesale COM 22160K105 65,368 -73,168 -52.82 18,638 -54.23 0.2883
2020-02-13 2019-12-31 13F Costco Wholesale COM 22160K105 138,536 138,536 111.93 40,719 118.47 0.3204
2019-11-13 2019-09-30 13F Costco Wholesale COM 22160K105 0 -10,665 -100.00 0 -100.00
2019-08-12 2019-06-30 13F Costco Wholesale COM 22160K105 10,665 10,665 2,818 0.0256
2019-02-13 2018-12-31 13F Costco Wholesale COM 22160K105 0 -66,774 -100.00 0 -100.00
2018-11-14 2018-09-30 13F Costco Wholesale COM 22160K105 66,774 -3,152 -4.51 15,684 7.33 0.0855
2018-08-14 2018-06-30 13F Costco Wholesale COM 22160K105 69,926 37,147 113.33 14,613 136.57 0.0762
2018-05-15 2018-03-31 13F Costco Wholesale COM 22160K105 32,779 4,325 15.20 6,177 16.64 0.0371
2018-02-09 2017-12-31 13F Costco Wholesale COM 22160K105 28,454 -219,363 -88.52 5,296 -86.99 0.0292
2017-11-13 2017-09-30 13F Costco Wholesale COM 22160K105 247,817 -52,800 -17.56 40,714 -15.32 0.2926
2017-08-10 2017-06-30 13F Costco Wholesale COM 22160K105 300,617 300,617 21.31 48,078 18.09 0.3876
2017-05-03 2017-03-31 13F Costco Wholesale COM 22160K105 0 -86,597 -100.00 0 -100.00
2017-02-08 2016-12-31 13F Costco Wholesale COM 22160K105 86,597 -336,180 -79.52 13,865 -78.50 0.1194
2016-10-31 2016-09-30 13F Costco Wholesale COM 22160K105 422,777 352,167 498.75 64,478 481.46 0.5920
2016-07-27 2016-06-30 13F Costco Wholesale COM 22160K105 70,610 70,610 -83.30 11,089 -82.80 0.1039
2016-05-02 2016-03-31 13F Costco Wholesale COM 22160K105 0 0 0 0.0000
2016-01-28 2015-12-31 13F Costco Wholesale COM 22160K105 0 -16,942 -100.00 0 -100.00
2015-10-27 2015-09-30 13F Costco Wholesale COM 22160K105 16,942 -283,807 -94.37 2,449 -93.97 0.0274
2015-07-28 2015-06-30 13F Costco Wholesale COM 22160K105 300,749 245,044 439.90 40,619 512.75 0.5152
2014-01-31 2013-12-31 13F Costco Wholesale COM 22160K105 55,705 1,950 3.63 6,629 7.13 0.0820
2013-10-31 2013-09-30 13F Costco Wholesale COM 22160K105 53,755 53,755 6,188 0.0855
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM COSTCO WHOLESALE CORPORATION COM Call 53,700 -62.42 53,508 -56.58 n/a n/a n/a
2026-02-17 2025-12-31 13F COSTCO WHSL CORP NEW COM COSTCO WHSL CORP NEW COM Call 142,900 -26.04 123,228 -31.09 n/a n/a n/a
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM Call 193,200 193.17 178,832 174.13 n/a n/a n/a
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM Call 65,900 -27.10 65,237 -23.70 n/a n/a n/a
2025-05-14 2025-03-31 13F COSTCO WHSL CORP COM Call 90,400 -37.09 85,499 -35.06 n/a n/a n/a
2025-02-13 2024-12-31 13F COSTCO WHSL CORP COM Call 143,700 -20.83 131,668 -18.17 n/a n/a n/a
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM Call 181,500 33.36 160,903 39.09 n/a n/a n/a
2024-08-13 2024-06-30 13F COSTCO WHSL CORP COM Call 136,100 -24.81 115,684 -12.76 n/a n/a n/a
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM Call 181,000 205.74 132,606 239.35 n/a n/a n/a
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM Call 59,200 179.25 39,077 226.26 n/a n/a n/a
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM Call 21,200 -52.14 11,977 -49.78 n/a n/a n/a
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM Call 44,300 -17.35 23,850 -10.45 n/a n/a n/a
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM Call 53,600 -16.64 26,632 -9.27 n/a n/a n/a
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM Call 64,300 12.02 29,353 8.28 n/a n/a n/a
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM Call 57,400 73.94 27,108 71.40 n/a n/a n/a
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM Call 33,000 -62.24 15,816 -68.57 n/a n/a n/a
2022-05-12 2022-03-31 13F COSTCO WHSL CORP COM Call 87,400 -45.41 50,329 -44.63 n/a n/a n/a
2022-02-10 2021-12-31 13F COSTCO WHSL CORP COM Call 160,100 -35.05 90,889 -17.94 n/a n/a n/a
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM Call 246,500 99.43 110,765 126.49 n/a n/a n/a
2021-08-12 2021-06-30 13F COSTCO WHSL CORP COM Call 123,600 48,905 n/a n/a n/a
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM Call 28,100 -14.07 10,588 -8.80 n/a n/a n/a
2020-11-13 2020-09-30 13F COSTCO WHSL CORP COM Call 32,700 -13.95 11,608 0.76 n/a n/a n/a
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM Call 38,000 -69.58 11,522 -67.65 n/a n/a n/a
2020-05-13 2020-03-31 13F Costco Wholesale COM Call 124,900 -51.00 35,613 -52.47 n/a n/a n/a
2020-02-13 2019-12-31 13F Costco Wholesale COM Call 254,900 -6.32 74,920 -4.43 n/a n/a n/a
2019-11-13 2019-09-30 13F Costco Wholesale COM Call 272,100 302.51 78,395 338.84 n/a n/a n/a
2019-08-12 2019-06-30 13F Costco Wholesale COM Call 67,600 1,436.36 17,864 1,577.37 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Costco Wholesale COM Call 4,400 -92.86 1,065 -91.51 n/a n/a n/a
2019-05-13 2019-03-31 13F Costco Wholesale COM Call 61,600 12,549 n/a n/a n/a
2019-02-13 2018-12-31 13F Costco Wholesale COM Call 61,600 -40.94 12,549 -48.78 n/a n/a n/a
2018-11-14 2018-09-30 13F Costco Wholesale COM Call 104,300 -44.22 24,498 -37.31 n/a n/a n/a
2018-08-14 2018-06-30 13F Costco Wholesale COM Call 187,000 63.75 39,079 81.60 n/a n/a n/a
2018-05-15 2018-03-31 13F Costco Wholesale COM Call 114,200 8.35 21,519 9.70 n/a n/a n/a
2018-02-09 2017-12-31 13F Costco Wholesale COM Call 105,400 23.71 19,617 40.14 n/a n/a n/a
2017-11-13 2017-09-30 13F Costco Wholesale COM Call 85,200 1,083.33 13,998 1,116.16 n/a n/a n/a
2017-08-10 2017-06-30 13F Costco Wholesale COM Call 7,200 -83.82 1,151 -84.58 n/a n/a n/a
2017-05-03 2017-03-31 13F Costco Wholesale COM Call 44,500 -29.81 7,462 -26.49 n/a n/a n/a
2017-02-08 2016-12-31 13F Costco Wholesale COM Call 63,400 141.98 10,151 154.03 n/a n/a n/a
2016-10-31 2016-09-30 13F Costco Wholesale COM Call 26,200 -34.50 3,996 -36.39 n/a n/a n/a
2016-07-27 2016-06-30 13F Costco Wholesale COM Call 40,000 -37.79 6,282 -38.00 n/a n/a n/a
2016-05-02 2016-03-31 13F Costco Wholesale COM Call 64,300 8.43 10,132 5.80 n/a n/a n/a
2016-01-28 2015-12-31 13F Costco Wholesale COM Call 59,300 97.67 9,577 120.82 n/a n/a n/a
2015-10-27 2015-09-30 13F Costco Wholesale COM Call 30,000 -84.05 4,337 -82.93 n/a n/a n/a
2015-07-28 2015-06-30 13F Costco Wholesale COM Call 188,100 -36.45 25,405 -43.35 n/a n/a n/a
2015-04-28 2015-03-31 13F Costco Wholesale COM Call 296,000 44,843 n/a n/a n/a
2015-01-28 2014-12-31 13F Costco Wholesale COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Costco Wholesale COM Call 57,900 2,531.82 7,256 2,886.01 n/a n/a n/a
2013-07-31 2013-06-30 13F Costco Wholesale COM Call 2,200 243 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM COSTCO WHOLESALE CORPORATION COM Put 31,500 -59.62 31,388 -53.34 n/a n/a n/a
2026-02-17 2025-12-31 13F COSTCO WHSL CORP NEW COM COSTCO WHSL CORP NEW COM Put 78,000 -45.87 67,263 -49.57 n/a n/a n/a
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM Put 144,100 64.69 133,383 53.99 n/a n/a n/a
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM Put 87,500 -40.92 86,620 -38.16 n/a n/a n/a
2025-05-14 2025-03-31 13F COSTCO WHSL CORP COM Put 148,100 -41.60 140,070 -39.72 n/a n/a n/a
2025-02-13 2024-12-31 13F COSTCO WHSL CORP COM Put 253,600 26.11 232,366 30.34 n/a n/a n/a
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM Put 201,100 15.44 178,279 20.40 n/a n/a n/a
2024-08-13 2024-06-30 13F COSTCO WHSL CORP COM Put 174,200 29.23 148,068 49.93 n/a n/a n/a
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM Put 134,800 70.20 98,759 88.91 n/a n/a n/a
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM Put 79,200 52,278 n/a n/a n/a
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM Put 18,300 16.56 9,852 26.31 n/a n/a n/a
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM Put 15,700 -78.49 7,801 -76.59 n/a n/a n/a
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM Put 73,000 -12.99 33,324 -15.90 n/a n/a n/a
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM Put 83,900 96.03 39,623 93.16 n/a n/a n/a
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM Put 42,800 -68.18 20,513 -73.51 n/a n/a n/a
2022-05-12 2022-03-31 13F COSTCO WHSL CORP COM Put 134,500 -54.59 77,452 -53.94 n/a n/a n/a
2022-02-10 2021-12-31 13F COSTCO WHSL CORP COM Put 296,200 -11.10 168,153 12.31 n/a n/a n/a
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM Put 333,200 132.52 149,723 164.07 n/a n/a n/a
2021-08-12 2021-06-30 13F COSTCO WHSL CORP COM Put 143,300 464.17 56,700 533.37 n/a n/a n/a
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM Put 25,400 -69.25 8,953 -71.24 n/a n/a n/a
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM Put 82,600 28.46 31,122 36.34 n/a n/a n/a
2020-11-13 2020-09-30 13F COSTCO WHSL CORP COM Put 64,300 -32.24 22,826 -20.67 n/a n/a n/a
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM Put 94,900 -55.80 28,775 -53.00 n/a n/a n/a
2020-05-13 2020-03-31 13F Costco Wholesale COM Put 214,700 -20.86 61,217 -23.23 n/a n/a n/a
2020-02-13 2019-12-31 13F Costco Wholesale COM Put 271,300 6.31 79,740 8.45 n/a n/a n/a
2019-11-13 2019-09-30 13F Costco Wholesale COM Put 255,200 349.30 73,526 389.85 n/a n/a n/a
2019-08-12 2019-06-30 13F Costco Wholesale COM Put 56,800 1,220.93 15,010 1,341.88 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Costco Wholesale COM Put 4,300 -80.89 1,041 -77.29 n/a n/a n/a
2019-05-13 2019-03-31 13F Costco Wholesale COM Put 22,500 4,583 n/a n/a n/a
2019-02-13 2018-12-31 13F Costco Wholesale COM Put 22,500 -70.00 4,583 -73.98 n/a n/a n/a
2018-11-14 2018-09-30 13F Costco Wholesale COM Put 75,000 -44.07 17,616 -37.14 n/a n/a n/a
2018-08-14 2018-06-30 13F Costco Wholesale COM Put 134,100 -1.90 28,024 8.80 n/a n/a n/a
2018-05-15 2018-03-31 13F Costco Wholesale COM Put 136,700 -24.97 25,758 -24.04 n/a n/a n/a
2018-02-09 2017-12-31 13F Costco Wholesale COM Put 182,200 108.94 33,911 136.71 n/a n/a n/a
2017-11-13 2017-09-30 13F Costco Wholesale COM Put 87,200 2,026.83 14,326 2,083.84 n/a n/a n/a
2017-08-10 2017-06-30 13F Costco Wholesale COM Put 4,100 -97.88 656 -97.98 n/a n/a n/a
2017-05-03 2017-03-31 13F Costco Wholesale COM Put 193,300 -18.54 32,414 -14.69 n/a n/a n/a
2017-02-08 2016-12-31 13F Costco Wholesale COM Put 237,300 1,739.53 37,994 1,831.57 n/a n/a n/a
2016-10-31 2016-09-30 13F Costco Wholesale COM Put 12,900 30.30 1,967 26.50 n/a n/a n/a
2016-07-27 2016-06-30 13F Costco Wholesale COM Put 9,900 -48.44 1,555 -48.61 n/a n/a n/a
2016-05-02 2016-03-31 13F Costco Wholesale COM Put 19,200 -52.94 3,026 -54.07 n/a n/a n/a
2016-01-28 2015-12-31 13F Costco Wholesale COM Put 40,800 114.74 6,589 139.86 n/a n/a n/a
2015-10-27 2015-09-30 13F Costco Wholesale COM Put 19,000 -80.45 2,747 -79.08 n/a n/a n/a
2015-07-28 2015-06-30 13F Costco Wholesale COM Put 97,200 -27.89 13,128 -35.72 n/a n/a n/a
2015-04-28 2015-03-31 13F Costco Wholesale COM Put 134,800 20,422 n/a n/a n/a
2015-01-28 2014-12-31 13F Costco Wholesale COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Costco Wholesale COM Put 19,700 994.44 2,469 1,092.75 n/a n/a n/a
2014-08-01 2014-06-30 13F Costco Wholesale COM Put 1,800 -47.06 207 -45.53 n/a n/a n/a
2014-05-14 2014-03-31 13F Costco Wholesale COM Put 3,400 -41.38 380 -44.93 n/a n/a n/a
2014-01-31 2013-12-31 13F Costco Wholesale COM Put 5,800 87.10 690 101.17 n/a n/a n/a
2013-07-31 2013-06-30 13F Costco Wholesale COM Put 3,100 343 n/a n/a n/a
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.