Congress WatchMPWR stock trades by members of Congress
Monolithic Power Systems, Inc. - Common Stock: 6 members of Congress disclosed 15 transactions between 2020-04-27 and 2026-08-05, 7 purchases and 8 sales.
Activity by year
Transactions by the year the report was filed.
MPWR price and Congress trades
Daily closing price (split-adjusted). Dots mark days members of Congress filed trades in MPWR: green when more were purchases, red when more were sales. Use + and − (or Ctrl/⌘ + scroll) to zoom and drag to pan. Hover a month in the heatmap below to highlight it here, or click it to zoom to that month.
Congress buying and selling by month
Purchases and sales of MPWR reported by members of the House and Senate.
Green months had more purchases, red months more sales, teal an even split; darker means more trades. Months are by filing date. Senate filings after August 2026 and scanned House filings are not fully covered, so early years can look quieter than they were.
Who traded MPWR
| Politician | Trades | Buys | Sales | Last filing |
|---|---|---|---|---|
| Thomas H Tuberville | 6 | 2 | 4 | 2026-08-05 |
| Markwayne Mullin | 3 | 3 | 0 | 2026-03-02 |
| Byron Donalds | 2 | 0 | 2 | 2026-07-15 |
| Rob Bresnahan | 2 | 1 | 1 | 2025-05-08 |
| Michael Patrick Guest | 1 | 1 | 0 | 2025-11-19 |
| Donna Shalala | 1 | 0 | 1 | 2020-04-27 |
Disclosed transactions
Download all transactions as CSV
| Filed | Traded | Politician | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-08-05 | 2024-05-03 | Thomas H Tuberville | Sale | $1,001 - $15,000 | Source |
| 2026-07-15 | 2026-06-05 | Byron Donalds | Partial sale | $1,001 - $15,000 | Source |
| 2026-07-15 | 2026-06-05 | Byron Donalds | Partial sale | $1,001 - $15,000 | Source |
| 2026-03-02 | 2026-02-04 | Markwayne Mullin | Buy | $15,001 - $50,000 | Source |
| 2026-02-04 | 2026-01-05 | Markwayne Mullin | Buy | $15,001 - $50,000 | Source |
| 2026-02-04 | 2026-01-05 | Markwayne Mullin | Buy | $15,001 - $50,000 | Source |
| 2025-11-19 | 2025-10-20 | Michael Patrick Guest | Buy | $1,001 - $15,000 | Source |
| 2025-05-08 | 2025-04-08 | Rob Bresnahan | Buy | $1,001 - $15,000 | Source |
| 2025-02-13 | 2025-01-13 | Rob Bresnahan | Sale | $1,001 - $15,000 | Source |
| 2024-06-14 | 2024-05-03 | Thomas H Tuberville | Sale | $1,001 - $15,000 | Source |
| 2023-11-16 | 2023-10-17 | Thomas H Tuberville | Buy | $1,001 - $15,000 | Source |
| 2023-05-12 | 2023-04-03 | Thomas H Tuberville | Partial sale | $1,001 - $15,000 | Source |
| 2023-05-11 | 2023-04-03 | Thomas H Tuberville | Partial sale | $1,001 - $15,000 | Source |
| 2021-10-15 | 2021-09-30 | Thomas H Tuberville | Buy | $1,001 - $15,000 | Source |
| 2020-04-27 | 2019-06-24 | Donna Shalala | Sale | $1,001 - $15,000 c | Source |
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Common questions
- Are members of Congress buying or selling MPWR?
- 6 members of Congress disclosed 15 transactions in Monolithic Power Systems, Inc. - Common Stock (MPWR) between 2020-04-27 and 2026-08-05: 7 purchases and 8 sales.
- How active was Congress in MPWR recently?
- In 2026 filings, 6 transactions in MPWR were disclosed: 3 purchases and 3 sales.
- Which members of Congress trade MPWR?
- The most active in MPWR are Thomas H Tuberville (6), Markwayne Mullin (3) and Byron Donalds (2), by number of disclosed transactions. 6 members in all have traded it.