Michael Guest bought Monolithic Power Systems Inc (NASDAQ: MPWR)
Michael Guest (R-MS), a U.S. Representative, has disclosed 1 trade in Monolithic Power Systems Inc (MPWR) since 2025, a single purchase, worth an estimated $8K in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts).
The trade highlighted here is a purchase: Michael Guest bought $1,001 - $15,000 of Monolithic Power Systems Inc (NASDAQ: MPWR) on October 20, 2025. Since that trade, MPWR is up +64.42% against the S&P 500 up +12.99%, an outperformance of +51.42%.
Data updated
Michael Guest's MPWR trades vs the price
MPWR is up +64.42% since Michael Guest bought on October 20, 2025, versus +12.99% for the S&P 500.
Performance since this trade
All Michael Guest MPWR trades
Michael Guest & MPWR trading FAQ
Is it legal for Michael Guest 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. BullishWhales tracks those disclosures; this page does not imply the trade was improper.
When did Michael Guest buy MPWR?
Michael Guest disclosed a purchase of $1,001 - $15,000 of Monolithic Power Systems Inc (MPWR) on October 20, 2025, according to public STOCK Act filings.
How has MPWR performed since Michael Guest's trade?
Since Michael Guest bought MPWR on October 20, 2025, the stock is up +64.42%, versus +12.99% for the S&P 500 over the same period, an outperformance of +51.42%.
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?
BullishWhales 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.
Michael Guest's MPWR tradesAll congressional filings for Monolithic Power Systems IncMichael Guest'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.