Congress trades in Costco Wholesale (COST)
18 of the members we track disclosed 27 purchases of COST between 2022-01-31 and 2026-07-10, and 32 sales. Here is what the stock did afterwards.
Every purchase is measured over the three months after the transaction date, against XLP — the ETF standing in for Consumer Staples — over exactly the same dates. The second figure is the one that carries information: the first mostly reflects what the sector did. How COST was classified.
How these buys are tagged
Costco Wholesale is a mega-cap, so a committee-aligned purchase here is tagged Aligned (Mega-cap) rather than Notable: owning a company this size says little about committee access. 13 are marked Cluster: A buy is marked Cluster when at least one other tracked member of Congress bought the same stock within 30 days of it, regardless of committee membership.
| Buys | Number | Return after 3 months | vs. sector | Beat their sector |
|---|---|---|---|---|
| All buys | 27 | +5.9% | +4.6% | 74% |
| Notable (committee-flagged) | 0 | Too few buys to measure | ||
| Unaligned (no committee overlap) | 19 | +7.5% | +5.3% | 79% |
| Cluster, excl. mega-caps | 0 | Too few buys to measure | ||
| Not clustered, excl. mega-caps | 0 | Too few buys to measure | ||
Who bought the most
- Markwayne Mullin — 3 buys
- Jared Moskowitz — 3 buys
- Gilbert Ray Cisneros, Jr. — 2 buys
- Richard McCormick — 2 buys
- Lisa C. McClain — 2 buys
Every disclosed purchase
| Member | Bought disclosed |
Signal | Price | 1W | 1M | 3M | vs sector |
|---|---|---|---|---|---|---|---|
| Dan Newhouse | 2026-07-10 2026-07-17 |
Aligned (Mega-cap) | $916.25 | +2.7% | +3.4% | +3.3% | +4.2% |
| Alan Armstrong | 2026-03-27 2026-07-21 |
Unaligned | $983.86 | +3.2% | +2.8% | -3.2% | -6.8% |
| Gilbert Ray Cisneros, Jr. | 2026-01-30 2026-02-13 |
Unaligned | $940.25 | +6.5% | +7.5% | +7.6% | +6.8% |
| Markwayne Mullin | 2025-12-29 2026-01-16 |
Unaligned | $867.84 | +0.9% | +10.7% | +14.8% | +10.2% |
| Richard McCormick | 2025-11-05 2025-12-09 |
Unaligned Cluster | $935.03 | -2.2% | -4.3% | +4.6% | -9.9% |
| Gilbert Ray Cisneros, Jr. | 2025-10-17 2025-11-18 |
Unaligned Cluster | $936.33 | -0.4% | -1.4% | +2.9% | -0.1% |
| John Boozman | 2025-10-09 2025-11-15 |
Aligned (Mega-cap) Cluster | $942.89 | -1.8% | -2.1% | -2.9% | -3.4% |
| Lisa C. McClain | 2025-06-17 2025-08-13 |
Aligned (Mega-cap) | $977.72 | +2.5% | -2.4% | -2.6% | -1.7% |
| Bruce Westerman | 2025-03-03 2025-04-16 |
Unaligned | $1,046.85 | -10.7% | -7.8% | +1.0% | +1.7% |
| James Comer | 2025-01-02 2025-01-10 |
Aligned (Mega-cap) Cluster | $909.81 | +1.9% | +7.7% | +6.3% | +1.6% |
| Lisa C. McClain | 2024-12-11 2025-08-13 |
Aligned (Mega-cap) Cluster | $994.69 | -3.0% | -5.8% | -6.8% | -4.0% |
| Val T. Hoyle | 2024-10-29 2025-09-12 |
Unaligned | $886.99 | +0.4% | +8.4% | +8.1% | +10.1% |
| C. Franklin | 2024-08-07 2025-07-03 |
Aligned (Mega-cap) | $810.30 | +6.5% | +8.2% | +11.0% | +9.4% |
| Greg Landsman | 2024-05-15 2024-08-14 |
Unaligned | $787.04 | +1.9% | +8.7% | +9.6% | +6.8% |
| Pete Sessions | 2024-01-31 2024-02-29 |
Unaligned Cluster | $694.88 | +3.6% | +7.9% | +3.9% | +1.1% |
| Kevin Hern | 2024-01-12 2024-02-11 |
Unaligned Cluster | $683.24 | +1.7% | +5.9% | +7.0% | +6.2% |
| Jared Moskowitz | 2023-12-28 2024-08-21 |
Unaligned Cluster | $663.10 | -2.2% | +3.6% | +10.5% | +4.3% |
| Markwayne Mullin | 2023-10-03 2023-11-01 |
Unaligned Cluster | $565.04 | -0.5% | -1.6% | +15.2% | +7.8% |
| Greg Stanton | 2023-09-26 2023-11-09 |
Unaligned Cluster | $552.96 | +2.2% | -1.0% | +22.0% | +18.9% |
| Markwayne Mullin | 2023-09-18 2023-10-12 |
Unaligned Cluster | $562.72 | -0.7% | +2.1% | +21.1% | +21.2% |
| Jared Moskowitz | 2023-07-14 2024-08-21 |
Unaligned | $546.70 | +2.0% | +3.0% | +3.7% | +13.8% |
| C. Franklin | 2023-04-19 2023-05-23 |
Aligned (Mega-cap) | $496.03 | -0.3% | +0.1% | +11.7% | +13.2% |
| Richard McCormick | 2023-03-15 2025-09-17 |
Unaligned Cluster | $485.66 | +0.4% | +1.2% | +8.6% | +6.8% |
| Jared Moskowitz | 2023-02-21 2023-03-10 |
Unaligned Cluster | $501.74 | -3.5% | -2.8% | -3.4% | -4.5% |
| Greg Landsman | 2023-01-12 2024-08-14 |
Unaligned | $482.43 | -2.7% | +3.6% | +3.2% | +1.5% |
| Shelley Moore Capito | 2022-07-01 2022-08-10 |
Aligned (Mega-cap) | $485.76 | +3.2% | +11.4% | -2.8% | +6.1% |
| Donald Beyer | 2022-01-31 2022-02-01 |
Unaligned | $505.13 | +2.1% | +4.5% | +4.7% | +3.9% |
Prices are the closing price on the transaction date, not what was paid: filings never disclose an execution price. Blank figures mean the window has not elapsed yet. Sales are not scored — a sale closes a position rather than opening one — so the 32 disclosed sales of COST are not in this table.
Download the data behind this page, or read how every figure is calculated. Trades in COST are a small part of the full rankings, which score each member across everything they bought.
Data last updated .