Byron Donalds sold Monolithic Power Systems Inc (NASDAQ: MPWR)
Byron Donalds (R-FL), a U.S. Representative, has disclosed 4 trades in Monolithic Power Systems Inc (MPWR) since 2022, 2 purchases and 2 sales, worth an estimated $32K in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts).
The trade highlighted here is a sale: Byron Donalds sold $1,001 - $15,000 of Monolithic Power Systems Inc (NASDAQ: MPWR) on June 5, 2026. Since that trade, MPWR is down -15.68% against the S&P 500 down -1.10%, an outperformance of -14.59%.
Across these filings, Byron Donalds has been a balanced trader of MPWR (a buy-to-sell ratio of 1.00). Each row in the table below links to that trade and its post-trade performance versus the market.
Data updated
Byron Donalds's MPWR trades vs the price
MPWR is down -15.68% since Byron Donalds sold on June 5, 2026, versus -1.10% for the S&P 500.
Performance since this trade
All Byron Donalds MPWR trades
| Traded | Type | Size | Return | Est. profit | |
|---|---|---|---|---|---|
| June 5, 2026 | SELL | $1481.05 | -15.68% | — | |
| June 5, 2026 | SELL | $1481.05 | -15.68% | — | |
| December 7, 2022 | BUY | $357.94 | +248.87% | +$19K | |
| December 7, 2022 | BUY | $357.94 | +248.87% | +$19K |
Estimated profit is shown for buys only, marked to the latest close. It is an estimate and does not net later sells, taxes, or fees.
Byron Donalds & MPWR trading FAQ
Is it legal for Byron Donalds to trade Monolithic Power Systems Inc (MPWR) stock?
Yes. Members of Congress are allowed to trade individual stocks, including Monolithic Power Systems Inc (MPWR), but the STOCK Act of 2012 requires them to publicly disclose each transaction within 45 days. Quantellect tracks those disclosures; this page does not imply the trade was improper.
When did Byron Donalds sell MPWR?
Byron Donalds disclosed a sale of $1,001 - $15,000 of Monolithic Power Systems Inc (MPWR) on June 5, 2026, according to public STOCK Act filings.
How has MPWR performed since Byron Donalds's trade?
Since Byron Donalds sold MPWR on June 5, 2026, the stock is down -15.68%, versus -1.10% for the S&P 500 over the same period, an outperformance of -14.59%.
How many times has Byron Donalds traded MPWR?
Byron Donalds has disclosed 4 MPWR trades since 2022 (2 purchases and 2 sales). Every disclosed trade is listed on this page.
How soon must members of Congress disclose a trade?
Under the STOCK Act, members of Congress must publicly report a covered transaction within 45 days of the trade. Filings can still be delayed, amended, or contain errors.
Where can I see all congressional MPWR trades?
Quantellect tracks every disclosed congressional trade in Monolithic Power Systems Inc (MPWR) on the Monolithic Power Systems Inc congressional trading page, which aggregates filings across all members of Congress.
Byron Donalds's MPWR tradesAll congressional filings for Monolithic Power Systems IncByron Donalds's full profile
Not investment advice. Congressional trading data is sourced from public STOCK Act disclosures, which are filed with a delay and may contain errors or be revised. Estimated prices and post-trade returns are derived algorithmically from public filings and end-of-day market data and describe historical activity, not a recommendation. Always do your own research and consult a licensed financial advisor before making investment decisions.