Mario Gabelli's COST Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 6,520 shares of Costco Wholesale Corporation (COST) worth $5.62 M, representing 0.05% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 51 quarters.
Based on 13F filings since 2013, Mario Gabelli has maintained a long-term strategic position in COST, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2019, adding 7,933 shares. Largest reduction occurred in Q3 2015, reducing 46,150 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Costco Wholesale Corporation (COST) Holding Value Over Time
Track share changes against reported price movement
Quarterly Costco Wholesale Corporation (COST) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -1,926 | Reduce 22.80% | 6,520 | $862.34 |
| Q3 2025 | +53 | Add 0.63% | 8,446 | $925.63 |
| Q2 2025 | +1,203 | Add 16.73% | 8,393 | $989.94 |
| Q1 2025 | +159 | Add 2.26% | 7,190 | $945.78 |
| Q4 2024 | +14 | Add 0.20% | 7,031 | $916.27 |
| Q3 2024 | +426 | Add 6.46% | 7,017 | $886.52 |
| Q2 2024 | -4,637 | Reduce 41.30% | 6,591 | $849.99 |
| Q1 2024 | -138 | Reduce 1.21% | 11,228 | $732.63 |
| Q4 2023 | +16 | Add 0.14% | 11,366 | $660.08 |
| Q3 2023 | -239 | Reduce 2.06% | 11,350 | $564.96 |
| Q2 2023 | +28 | Add 0.24% | 11,589 | $538.38 |
| Q1 2023 | -198 | Reduce 1.68% | 11,561 | $496.87 |
| Q4 2022 | -530 | Reduce 4.31% | 11,759 | $456.50 |
| Q3 2022 | +4,980 | Add 68.14% | 12,289 | $472.29 |
| Q2 2022 | -440 | Reduce 5.68% | 7,309 | $479.27 |
| Q1 2022 | -69 | Reduce 0.88% | 7,749 | $575.82 |
| Q4 2021 | -310 | Reduce 3.81% | 7,818 | $567.66 |
| Q3 2021 | -30 | Reduce 0.37% | 8,128 | $449.31 |
| Q2 2021 | -32 | Reduce 0.39% | 8,158 | $395.69 |
| Q1 2021 | -1,727 | Reduce 17.41% | 8,190 | $352.50 |
| Q4 2020 | -588 | Reduce 5.60% | 9,917 | $376.83 |
| Q3 2020 | -400 | Reduce 3.67% | 10,505 | $354.97 |
| Q2 2020 | +1,123 | Add 11.48% | 10,905 | $303.26 |
| Q1 2020 | -424 | Reduce 4.15% | 9,782 | $285.12 |
| Q4 2019 | -7,165 | Reduce 41.25% | 10,206 | $293.94 |
| Q3 2019 | -669 | Reduce 3.71% | 17,371 | $288.12 |
| Q2 2019 | +7,933 | Add 78.49% | 18,040 | $264.25 |
| Q1 2019 | -828 | Reduce 7.57% | 10,107 | $242.11 |
| Q4 2018 | -60 | Reduce 0.55% | 10,935 | $203.75 |
| Q3 2018 | -540 | Reduce 4.68% | 10,995 | $234.92 |
| Q2 2018 | -1,530 | Reduce 11.71% | 11,535 | $209.02 |
| Q1 2018 | +265 | Add 2.07% | 13,065 | $188.44 |
| Q4 2017 | -20,080 | Reduce 61.07% | 12,800 | $186.09 |
| Q3 2017 | +1,210 | Add 3.82% | 32,880 | $164.29 |
| Q2 2017 | -54 | Reduce 0.17% | 31,670 | $159.93 |
| Q1 2017 | +1,060 | Add 3.46% | 31,724 | $167.70 |
| Q4 2016 | -2,570 | Reduce 7.73% | 30,664 | $160.12 |
| Q3 2016 | -5,790 | Reduce 14.84% | 33,234 | $152.52 |
| Q2 2016 | -8,196 | Reduce 17.36% | 39,024 | $157.03 |
| Q1 2016 | -225 | Reduce 0.47% | 47,220 | $157.58 |
| Q4 2015 | -4,380 | Reduce 8.45% | 47,445 | $161.49 |
| Q3 2015 | -46,150 | Reduce 47.10% | 51,825 | $144.56 |
| Q2 2015 | -6,440 | Reduce 6.17% | 97,975 | $135.07 |
| Q1 2015 | -1,045 | Reduce 0.99% | 104,415 | $151.49 |
| Q3 2014 | -860 | Reduce 0.81% | 105,460 | $125.32 |
| Q2 2014 | -2,235 | Reduce 2.06% | 106,320 | $115.16 |
| Q1 2014 | -1,100 | Reduce 1.00% | 108,555 | $111.68 |
| Q4 2013 | +1,600 | Add 1.48% | 109,655 | $119.02 |
| Q3 2013 | +5,545 | Add 5.41% | 108,055 | $115.17 |
| Q2 2013 | +102,510 | Add 0.00% | 102,510 | $110.57 |
Mario Gabelli's Costco Wholesale Corporation Investment FAQs
Mario Gabelli first purchased Costco Wholesale Corporation (COST) in Q2 2013, acquiring 102,510 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Costco Wholesale Corporation (COST) for 51 quarters since Q2 2013.
Mario Gabelli's largest addition to Costco Wholesale Corporation (COST) was in Q2 2013, adding 102,510 shares worth $11.34 M.
According to the latest 13F filing for Q4 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 6,520 shares of Costco Wholesale Corporation (COST), valued at approximately $5.62 M.
As of the Q4 2025 filing, Costco Wholesale Corporation (COST) represents approximately 0.05% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Costco Wholesale Corporation (COST) was 109,655 shares, as reported at the end of Q4 2013.