COSTCOSTCostco Wholesale Corporation
63 members of Congress disclosed 199 transactions in COST between Aug 4, 2012 and Jul 10, 2026.
Price, with congressional trades marked
COST $947.73 latest
Lisa C. McClain, Republican
Val T. Hoyle, Democrat+2%
Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., DemocratGilbert Ray Cisneros, Jr., Democrat+1%Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., Democrat-3%
Alan Armstrong, Republican
Alan Armstrong, Republican+4%
Dan Newhouse, Republican
Dan Newhouse, RepublicanMarked trades (7)
| Traded | Member | Amount | Adj. close | COST since | SPY since | Difference | |
|---|---|---|---|---|---|---|---|
| Jul 10, 2025 | Lisa C. McClain (R) | sell | ~$8K | $963.18 | -1.6% | +24.9% | -26.5% |
| Sep 23, 2025 | Val T. Hoyle (D) | sell | ~$8K | $938.20 | +1.0% | +17.5% | -16.5% |
| Oct 17, 2025 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $930.82 | +1.8% | +17.4% | -15.5% |
| Dec 24, 2025 | Gilbert Ray Cisneros, Jr. (D) | sell | ~$8K | $867.92 | +9.2% | +12.6% | -3.4% |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $937.65 | +1.1% | +12.4% | -11.3% |
| Mar 27, 2026 | Alan Armstrong (R) | buy | ~$8K | $981.12 | -3.4% | +22.3% | -25.7% |
| Jul 10, 2026 | Dan Newhouse (R) | buy | ~$8K | $914.60 | +3.6% | +2.4% | +1.2% |
Prices are dividend- and split-adjusted, so “adj. close” is not necessarily what the stock printed that day. The horizon runs to the latest close, so rows with different trade dates are not comparable to each other — and none of these is the benchmark-relative, fixed-window alpha the leaderboard ranks on.
199
Transactions
121 buys · 78 sells
63
Members
$4.0M
Est. volume
29D / 34R
Party split
distinct members
Transactions
showing 100 of 199| Member | Type | Amount | Traded | Disclosed |
|---|---|---|---|---|
| Buy | $1K – $15K | Mar 27, 2026 | Jul 21, 2026 116d · late | |
| Buyspouse | $1K – $15K | Jul 10, 2026 | Jul 17, 2026 7d | |
| Buy | $1K – $15K | Jan 30, 2026 | Feb 13, 2026 14d | |
| Buyjoint | $15K – $50K | Dec 29, 2025 | Jan 16, 2026 18d | |
| Sell (part) | $1K – $15K | Dec 24, 2025 | Jan 12, 2026 19d | |
| Buy | $1K – $15K | Nov 5, 2025 | Dec 9, 2025 34d | |
| Buy | $1K – $15K | Oct 17, 2025 | Nov 18, 2025 32d | |
| Buyjoint | $1K – $15K | Oct 9, 2025 | Nov 15, 2025 37d | |
| Sell (part)spouse | $1K – $15K | Oct 17, 2025 | Nov 4, 2025 18d | |
| Sellspouse | $1K – $15K | Sep 23, 2025 | Oct 10, 2025 17d | |
| Buy | $1K – $15K | Mar 15, 2023 | Sep 17, 2025 917d · late | |
| Buyspouse | $1K – $15K | Oct 29, 2024 | Sep 12, 2025 318d · late | |
| Sellspouse | $1K – $15K | Jul 10, 2025 | Aug 13, 2025 34d | |
| Buyspouse | $1K – $15K | Jun 17, 2025 | Aug 13, 2025 57d · late | |
| Sell (part)spouse | $1K – $15K | Jun 9, 2025 | Aug 13, 2025 65d · late | |
| Buyspouse | $1K – $15K | Dec 11, 2024 | Aug 13, 2025 245d · late | |
| Buyspouse | $1K – $15K | Aug 7, 2024 | Jul 3, 2025 330d · late | |
| Sell | $100K – $250K | May 12, 2025 | Jun 22, 2025 41d | |
| Sell | $1K – $15K | Apr 21, 2025 | May 12, 2025 21d | |
| Buy | $1K – $15K | Mar 3, 2025 | Apr 16, 2025 44d | |
| Sell (part) | $15K – $50K | Mar 31, 2025 | Apr 11, 2025 11d | |
| Selljoint | $15K – $50K | Mar 27, 2025 | Apr 8, 2025 12d | |
| Sellspouse | $1K – $15K | Mar 27, 2025 | Apr 8, 2025 12d | |
| Selljoint | $1K – $15K | Mar 27, 2025 | Apr 8, 2025 12d | |
| Buy | $1K – $15K | Mar 17, 2025 | Mar 19, 2025 2d | |
| Sell | $1K – $15K | Jan 28, 2025 | Mar 18, 2025 49d · late | |
| Sellspouse | $1K – $15K | Jan 28, 2025 | Mar 18, 2025 49d · late | |
| Sell | $50K – $100K | Jan 28, 2025 | Mar 18, 2025 49d · late | |
| Sell (part)joint | $1K – $15K | Feb 26, 2025 | Mar 5, 2025 7d | |
| Buy | $1K – $15K | Jan 2, 2025 | Jan 10, 2025 8d | |
| Buy | $1K – $15K | Jan 2, 2025 | Jan 10, 2025 8d | |
| Buy | $1K – $15K | Nov 25, 2024 | Nov 27, 2024 2d | |
| Buy | $1K – $15K | Oct 4, 2024 | Oct 8, 2024 4d | |
| Buy | $1K – $15K | Dec 28, 2023 | Aug 21, 2024 237d · late | |
| Buy | $1K – $15K | Jul 14, 2023 | Aug 21, 2024 404d · late | |
| Sell (part) | $15K – $50K | Aug 6, 2024 | Aug 20, 2024 14d | |
| Sell (part) | $1K – $15K | Aug 1, 2024 | Aug 20, 2024 19d | |
| Buyspouse | $1K – $15K | Jul 2, 2024 | Aug 16, 2024 45d | |
| Buyjoint | $1K – $15K | May 15, 2024 | Aug 14, 2024 91d · late | |
| Buyspouse | $1K – $15K | Jan 12, 2023 | Aug 14, 2024 580d · late | |
| Buy | $1K – $15K | Jun 24, 2024 | Jun 27, 2024 3d | |
| Buyspouse | $1K – $15K | Jan 31, 2024 | Feb 29, 2024 29d | |
| Buyjoint | $1K – $15K | Jan 12, 2024 | Feb 11, 2024 30d | |
| Buyspouse | $1K – $15K | Jan 23, 2024 | Feb 6, 2024 14d | |
| Buyspouse | $1K – $15K | Jan 23, 2024 | Feb 6, 2024 14d | |
| Buyspouse | $15K – $50K | Jan 23, 2024 | Feb 6, 2024 14d | |
| Buychild | $1K – $15K | Jan 10, 2024 | Feb 5, 2024 26d | |
| Selljoint | $1K – $15K | Dec 4, 2023 | Dec 15, 2023 11d | |
| Sellspouse | $1K – $15K | Oct 24, 2023 | Nov 9, 2023 16d | |
| Buyspouse | $1K – $15K | Sep 26, 2023 | Nov 9, 2023 44d | |
| Buyjoint | $1K – $15K | Oct 3, 2023 | Nov 1, 2023 29d | |
| Buyjoint | $15K – $50K | Sep 18, 2023 | Oct 12, 2023 24d | |
| Selljoint | $1K – $15K | Aug 22, 2023 | Sep 22, 2023 31d | |
| Selljoint | $1K – $15K | Aug 22, 2023 | Sep 18, 2023 27d | |
| Buy | $15K – $50K | Sep 10, 2019 | Aug 10, 2023 1430d · late | |
| Buyspouse | $15K – $50K | Apr 27, 2017 | Aug 10, 2023 2296d · late | |
| Sellspouse | $1K – $15K | May 25, 2023 | Jun 6, 2023 12d | |
| Buy | $1K – $15K | Mar 31, 2021 | May 26, 2023 786d · late | |
| Buy | $1K – $15K | Apr 19, 2023 | May 23, 2023 34d | |
| Buy | $50K – $100K | Apr 19, 2023 | May 23, 2023 34d | |
| Sell (part)joint | $1K – $15K | Feb 23, 2023 | Mar 13, 2023 18d | |
| Buychild | $1K – $15K | Feb 21, 2023 | Mar 10, 2023 17d | |
| Sell (part) | $15K – $50K | Jan 31, 2023 | Feb 24, 2023 24d | |
| Selljoint | $1K – $15K | Jan 31, 2023 | Feb 14, 2023 14d | |
| Buyspouse | $1K – $15K | Nov 10, 2022 | Dec 19, 2022 39d | |
| Sell (part)spouse | $1K – $15K | Oct 12, 2022 | Nov 10, 2022 29d | |
| Buyspouse | $1K – $15K | Aug 5, 2022 | Sep 14, 2022 40d | |
| Buyspouse | $1K – $15K | Jul 15, 2022 | Aug 10, 2022 26d | |
| Buyspouse | $1K – $15K | Jul 1, 2022 | Aug 10, 2022 40d | |
| Sell (part) | $1K – $15K | Jul 7, 2022 | Aug 3, 2022 27d | |
| Buyspouse | $15K – $50K | Jun 10, 2022 | Jun 20, 2022 10d | |
| Sell (part)spouse | $1K – $15K | Apr 22, 2022 | May 10, 2022 18d | |
| Selljoint | $15K – $50K | Feb 28, 2022 | Mar 3, 2022 3d | |
| Buyspouse | $1K – $15K | Feb 28, 2022 | Mar 2, 2022 2d | |
| Sell (part) | $1K – $15K | Nov 16, 2021 | Feb 11, 2022 87d · late | |
| Buyjoint | $1K – $15K | Jan 31, 2022 | Feb 1, 2022 1d | |
| Sellchild | $1K – $15K | Dec 1, 2021 | Jan 7, 2022 37d | |
| Sell (part)spouse | $1K – $15K | Nov 26, 2021 | Dec 22, 2021 26d | |
| Selljoint | $15K – $50K | Oct 28, 2021 | Nov 18, 2021 21d | |
| Buyspouse | $1K – $15K | Sep 2, 2021 | Oct 7, 2021 35d | |
| Buyjoint | $1K – $15K | Sep 17, 2021 | Oct 1, 2021 14d | |
| Sell | $15K – $50K | Jun 18, 2019 | Sep 23, 2021 828d · late | |
| Buy | $1K – $15K | Aug 17, 2017 | Sep 23, 2021 1498d · late | |
| Buyjoint | $250K – $500K | Aug 25, 2021 | Sep 15, 2021 21d | |
| Sellspouse | $15K – $50K | Jul 30, 2021 | Sep 8, 2021 40d | |
| Buyspouse | $15K – $50K | Jul 13, 2021 | Aug 5, 2021 23d | |
| Buyjoint | $1K – $15K | Jul 19, 2021 | Aug 4, 2021 16d | |
| Sell (part)joint | $50K – $100K | Apr 14, 2020 | May 2, 2021 383d · late | |
| Selljoint | $15K – $50K | Apr 14, 2020 | May 2, 2021 383d · late | |
| Selljoint | $1K – $15K | Mar 18, 2021 | Apr 1, 2021 14d | |
| Sell | $15K – $50K | Feb 16, 2021 | Mar 16, 2021 28d | |
| Buy | $1K – $15K | Feb 22, 2021 | Mar 1, 2021 7d | |
| Sell (part) | $1K – $15K | Jan 28, 2021 | Feb 19, 2021 22d | |
| Sell | $1K – $15K | Jan 27, 2021 | Feb 8, 2021 12d | |
| Sellspouse | $1K – $15K | Jan 27, 2021 | Feb 8, 2021 12d | |
| Buy | $1K – $15K | Jul 2, 2020 | Jan 26, 2021 208d · late | |
| Buyjoint | $1K – $15K | Dec 28, 2020 | Jan 15, 2021 18d | |
| Buyspouse | $15K – $50K | Nov 24, 2020 | Jan 14, 2021 51d · late | |
| Sellspouse | $15K – $50K | Nov 4, 2020 | Jan 14, 2021 71d · late | |
| Buy | $1K – $15K | Dec 31, 2020 | Jan 11, 2021 11d |
Disclosures are filed up to 45 days after a trade, so this is a record rather than a signal. Amounts are bracket midpoints. Symbols are recorded as they existed on the trade date and mapped forward where a company was renamed.