All stock lists
Monolithic Power Systems, Inc. (NASDAQ:MPWR)
US · Delayed Price · Currency is USD
Technology · Semiconductors
1175.65+35.53 (+3.12%)
Market cap
$57.8B
Health Score
Analyst consensus
Listed since
Nov 19, 2004
Website
Insider Score
––Not scored
MPWR Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
Congress Trading
Recent trades of MPWR by members of U.S. Congress
| Politician | Type | Traded |
|---|---|---|
| Byron DonaldsHouse / R | Sale$1.00K – $15.00K | Jun 5, 2026 |
| Michael GuestHouse / R | Purchase$1.00K – $15.00K | Oct 20, 2025 |
| Michael GuestHouse / R | Purchase$1.00K – $15.00K | Oct 19, 2025 |
Corporate Lobbying
Government lobbying spending instances
Loading filings…
Source: U.S. Senate LDA
Corporate Lobbying
MPWR Estimated quarterly lobbying spending
Source: U.S. Senate LDA
U.S. Patents
New MPWR patent grants
Loading patent grants…
Source: USPTO Open Data Portal
Government Contracts
Estimated quarterly amount awarded to MPWR from public contracts
Source: USAspending.gov
Recently reported changes in MPWR holdings by institutional investors
Scanning latest 13F filings…
Latest 0 13F filings · Source: SEC EDGAR
View all institutional owners →Congressional Trades
U.S. House and Senate disclosures referencing MPWR, reported under the STOCK Act.
| Politician | Chamber | Action | Amount | Date |
|---|---|---|---|---|
| House | Sell | $1.00K – $15.00K | Jun 5, 2026 | |
| House | Buy | $1.00K – $15.00K | Oct 20, 2025 | |
| House | Buy | $1.00K – $15.00K | Oct 19, 2025 |
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.