COSTCOSTCostco Wholesale Corporation
63 members of Congress disclosed 200 transactions in COST between Aug 4, 2012 and Jul 30, 2026.
Price, with congressional trades marked
COST $896.50 latest
Val T. Hoyle, Democrat-4%
Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., DemocratGilbert Ray Cisneros, Jr., Democrat-4%Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., Democrat-9%AAAlan Armstrong, Republican
-2%
Dan Newhouse, Republican
Dan Newhouse, RepublicanMarked trades (6)
| Traded | Member | Amount | Adj. close | COST since | SPY since | Difference | |
|---|---|---|---|---|---|---|---|
| Sep 23, 2025 | Val T. Hoyle (D) | sell | ~$8K | $938.20 | -4.4% | +16.9% | -21.4% |
| Oct 17, 2025 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $930.82 | -3.7% | +16.8% | -20.4% |
| Dec 24, 2025 | Gilbert Ray Cisneros, Jr. (D) | sell | ~$8K | $867.92 | +3.3% | +12.0% | -8.7% |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $937.65 | -4.4% | +11.8% | -16.2% |
| Mar 27, 2026 | Alan Armstrong (R) | buy | ~$8K | $981.12 | -8.6% | +21.6% | -30.3% |
| Jul 10, 2026 | Dan Newhouse (R) | buy | ~$8K | $914.60 | -2.0% | +1.9% | -3.9% |
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.
200
Transactions
121 buys · 79 sells
63
Members
$4.0M
Est. volume
29D / 34R
Party split
distinct members
Transactions
most recent 100| Member | Type | Amount | Traded | Disclosed |
|---|---|---|---|---|
| Sell | $1K – $15K | Jul 30, 2026 | Aug 14, 2026 | |
| Buy | $1K – $15K | Mar 27, 2026 | Jul 21, 2026 | |
| Buyspouse | $1K – $15K | Jul 10, 2026 | Jul 17, 2026 | |
| Buy | $1K – $15K | Jan 30, 2026 | Feb 13, 2026 | |
| Buyjoint | $15K – $50K | Dec 29, 2025 | Jan 16, 2026 | |
| Sell (part) | $1K – $15K | Dec 24, 2025 | Jan 12, 2026 | |
| Buy | $1K – $15K | Nov 5, 2025 | Dec 9, 2025 | |
| Buy | $1K – $15K | Oct 17, 2025 | Nov 18, 2025 | |
| Buyjoint | $1K – $15K | Oct 9, 2025 | Nov 15, 2025 | |
| Sell (part)spouse | $1K – $15K | Oct 17, 2025 | Nov 4, 2025 | |
| Sellspouse | $1K – $15K | Sep 23, 2025 | Oct 10, 2025 | |
| Buy | $1K – $15K | Mar 15, 2023 | Sep 17, 2025 | |
| Buyspouse | $1K – $15K | Oct 29, 2024 | Sep 12, 2025 | |
| Sellspouse | $1K – $15K | Jul 10, 2025 | Aug 13, 2025 | |
| Buyspouse | $1K – $15K | Jun 17, 2025 | Aug 13, 2025 | |
| Sell (part)spouse | $1K – $15K | Jun 9, 2025 | Aug 13, 2025 | |
| Buyspouse | $1K – $15K | Dec 11, 2024 | Aug 13, 2025 | |
| Buyspouse | $1K – $15K | Aug 7, 2024 | Jul 3, 2025 | |
| Sell | $100K – $250K | May 12, 2025 | Jun 22, 2025 | |
| Sell | $1K – $15K | Apr 21, 2025 | May 12, 2025 | |
| Buy | $1K – $15K | Mar 3, 2025 | Apr 16, 2025 | |
| Sell (part) | $15K – $50K | Mar 31, 2025 | Apr 11, 2025 | |
| Selljoint | $1K – $15K | Mar 27, 2025 | Apr 8, 2025 | |
| Selljoint | $15K – $50K | Mar 27, 2025 | Apr 8, 2025 | |
| Sellspouse | $1K – $15K | Mar 27, 2025 | Apr 8, 2025 | |
| Buy | $1K – $15K | Mar 17, 2025 | Mar 19, 2025 | |
| Sell | $50K – $100K | Jan 28, 2025 | Mar 18, 2025 | |
| Sell | $1K – $15K | Jan 28, 2025 | Mar 18, 2025 | |
| Sellspouse | $1K – $15K | Jan 28, 2025 | Mar 18, 2025 | |
| Sell (part)joint | $1K – $15K | Feb 26, 2025 | Mar 5, 2025 | |
| Buy | $1K – $15K | Jan 2, 2025 | Jan 10, 2025 | |
| Buy | $1K – $15K | Jan 2, 2025 | Jan 10, 2025 | |
| Buy | $1K – $15K | Nov 25, 2024 | Nov 27, 2024 | |
| Buy | $1K – $15K | Oct 4, 2024 | Oct 8, 2024 | |
| Buy | $1K – $15K | Dec 28, 2023 | Aug 21, 2024 | |
| Buy | $1K – $15K | Jul 14, 2023 | Aug 21, 2024 | |
| Sell (part) | $15K – $50K | Aug 6, 2024 | Aug 20, 2024 | |
| Sell (part) | $1K – $15K | Aug 1, 2024 | Aug 20, 2024 | |
| Buyspouse | $1K – $15K | Jul 2, 2024 | Aug 16, 2024 | |
| Buyjoint | $1K – $15K | May 15, 2024 | Aug 14, 2024 | |
| Buyspouse | $1K – $15K | Jan 12, 2023 | Aug 14, 2024 | |
| Buy | $1K – $15K | Jun 24, 2024 | Jun 27, 2024 | |
| Buyspouse | $1K – $15K | Jan 31, 2024 | Feb 29, 2024 | |
| Buyjoint | $1K – $15K | Jan 12, 2024 | Feb 11, 2024 | |
| Buyspouse | $1K – $15K | Jan 23, 2024 | Feb 6, 2024 | |
| Buyspouse | $1K – $15K | Jan 23, 2024 | Feb 6, 2024 | |
| Buyspouse | $15K – $50K | Jan 23, 2024 | Feb 6, 2024 | |
| Buychild | $1K – $15K | Jan 10, 2024 | Feb 5, 2024 | |
| Selljoint | $1K – $15K | Dec 4, 2023 | Dec 15, 2023 | |
| Sellspouse | $1K – $15K | Oct 24, 2023 | Nov 9, 2023 | |
| Buyspouse | $1K – $15K | Sep 26, 2023 | Nov 9, 2023 | |
| Buyjoint | $1K – $15K | Oct 3, 2023 | Nov 1, 2023 | |
| Buyjoint | $15K – $50K | Sep 18, 2023 | Oct 12, 2023 | |
| Selljoint | $1K – $15K | Aug 22, 2023 | Sep 22, 2023 | |
| Selljoint | $1K – $15K | Aug 22, 2023 | Sep 18, 2023 | |
| Buy | $15K – $50K | Sep 10, 2019 | Aug 10, 2023 | |
| Buyspouse | $15K – $50K | Apr 27, 2017 | Aug 10, 2023 | |
| Sellspouse | $1K – $15K | May 25, 2023 | Jun 6, 2023 | |
| Buy | $1K – $15K | Mar 31, 2021 | May 26, 2023 | |
| Buy | $50K – $100K | Apr 19, 2023 | May 23, 2023 | |
| Buy | $1K – $15K | Apr 19, 2023 | May 23, 2023 | |
| Sell (part)joint | $1K – $15K | Feb 23, 2023 | Mar 13, 2023 | |
| Buychild | $1K – $15K | Feb 21, 2023 | Mar 10, 2023 | |
| Sell (part) | $15K – $50K | Jan 31, 2023 | Feb 24, 2023 | |
| Selljoint | $1K – $15K | Jan 31, 2023 | Feb 14, 2023 | |
| Buyspouse | $1K – $15K | Nov 10, 2022 | Dec 19, 2022 | |
| Sell (part)spouse | $1K – $15K | Oct 12, 2022 | Nov 10, 2022 | |
| Buyspouse | $1K – $15K | Aug 5, 2022 | Sep 14, 2022 | |
| Buyspouse | $1K – $15K | Jul 15, 2022 | Aug 10, 2022 | |
| Buyspouse | $1K – $15K | Jul 1, 2022 | Aug 10, 2022 | |
| Sell (part) | $1K – $15K | Jul 7, 2022 | Aug 3, 2022 | |
| Buyspouse | $15K – $50K | Jun 10, 2022 | Jun 20, 2022 | |
| Sell (part)spouse | $1K – $15K | Apr 22, 2022 | May 10, 2022 | |
| Selljoint | $15K – $50K | Feb 28, 2022 | Mar 3, 2022 | |
| Buyspouse | $1K – $15K | Feb 28, 2022 | Mar 2, 2022 | |
| Sell (part) | $1K – $15K | Nov 16, 2021 | Feb 11, 2022 | |
| Buyjoint | $1K – $15K | Jan 31, 2022 | Feb 1, 2022 | |
| Sellchild | $1K – $15K | Dec 1, 2021 | Jan 7, 2022 | |
| Sell (part)spouse | $1K – $15K | Nov 26, 2021 | Dec 22, 2021 | |
| Selljoint | $15K – $50K | Oct 28, 2021 | Nov 18, 2021 | |
| Buyspouse | $1K – $15K | Sep 2, 2021 | Oct 7, 2021 | |
| Buyjoint | $1K – $15K | Sep 17, 2021 | Oct 1, 2021 | |
| Sell | $15K – $50K | Jun 18, 2019 | Sep 23, 2021 | |
| Buy | $1K – $15K | Aug 17, 2017 | Sep 23, 2021 | |
| Buyjoint | $250K – $500K | Aug 25, 2021 | Sep 15, 2021 | |
| Sellspouse | $15K – $50K | Jul 30, 2021 | Sep 8, 2021 | |
| Buyspouse | $15K – $50K | Jul 13, 2021 | Aug 5, 2021 | |
| Buyjoint | $1K – $15K | Jul 19, 2021 | Aug 4, 2021 | |
| Sell (part)joint | $50K – $100K | Apr 14, 2020 | May 2, 2021 | |
| Selljoint | $15K – $50K | Apr 14, 2020 | May 2, 2021 | |
| Selljoint | $1K – $15K | Mar 18, 2021 | Apr 1, 2021 | |
| Sell | $15K – $50K | Feb 16, 2021 | Mar 16, 2021 | |
| Buy | $1K – $15K | Feb 22, 2021 | Mar 1, 2021 | |
| Sell (part) | $1K – $15K | Jan 28, 2021 | Feb 19, 2021 | |
| Sellspouse | $1K – $15K | Jan 27, 2021 | Feb 8, 2021 | |
| Sell | $1K – $15K | Jan 27, 2021 | Feb 8, 2021 | |
| Buy | $1K – $15K | Jul 2, 2020 | Jan 26, 2021 | |
| Buyjoint | $1K – $15K | Dec 28, 2020 | Jan 15, 2021 | |
| Buyspouse | $15K – $50K | Nov 24, 2020 | Jan 14, 2021 | |
| Sellspouse | $15K – $50K | Nov 4, 2020 | Jan 14, 2021 |
