Trade with Congress

MPWRMPWRMonolithic Power Systems, Inc. - Common Stock

7 members of Congress disclosed 19 transactions in MPWR between Dec 18, 2015 and Jun 5, 2026.

Price, with congressional trades marked

MPWR $1400.64 latest
16871197707Jul 2025SepNovJan 2026MarMayJul
+36%Michael Guest, Republican
+47%Markwayne Mullin, Republican
+24%Markwayne Mullin, Republican
Byron Donalds, Republican
Jul 7, 2025 – Aug 7, 2026 · closing price, dividend and split adjustedbuysell% is what the stock has done since that purchase — not the member's return, and not benchmark-adjusted
Marked trades (4)
TradedMemberAmountAdj. closeMPWR sinceSPY sinceDifference
Oct 20, 2025Michael Guest (R)buy~$8K$1027.49+36.3%+16.1%+20.2%
Jan 5, 2026Markwayne Mullin (R)buy~$33K$950.88+47.3%+13.0%+34.3%
Feb 4, 2026Markwayne Mullin (R)buy~$33K$1133.64+23.6%+13.3%+10.3%
Jun 5, 2026Byron Donalds (R)sell~$8K$1475.52-5.1%+5.1%-10.2%

Prices are dividend- and split-adjusted, so “adj. close” is not necessarily what the stock printed that day. The horizon runs to the latest close, so rows with different trade dates are not comparable to each other — and none of these is the benchmark-relative, fixed-window alpha the leaderboard ranks on.

19
Transactions
9 buys · 10 sells
7
Members
$226K
Est. volume
1D / 6R
Party split
distinct members

Transactions

19
MemberTypeAmountTradedDisclosed
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Selljoint$1K – $15KMay 3, 2024Aug 5, 2026
824d · late
Byron Donalds, RepublicanByron DonaldsR-FL
Sell (part)$1K – $15KJun 5, 2026Jul 15, 2026
40d
Byron Donalds, RepublicanByron DonaldsR-FL
Sell (part)spouse$1K – $15KJun 5, 2026Jul 15, 2026
40d
Markwayne Mullin, RepublicanMarkwayne MullinR-OK
Buyjoint$15K – $50KFeb 4, 2026Mar 2, 2026
26d
Markwayne Mullin, RepublicanMarkwayne MullinR-OK
Buy$15K – $50KJan 5, 2026Feb 4, 2026
30d
Markwayne Mullin, RepublicanMarkwayne MullinR-OK
Buyspouse$15K – $50KJan 5, 2026Feb 4, 2026
30d
Michael Guest, RepublicanMichael GuestR-MS
Buychild$1K – $15KOct 20, 2025Nov 19, 2025
30d
Robert P. Bresnahan, Jr., RepublicanRobert P. Bresnahan, Jr.R-PA
Buy$1K – $15KApr 8, 2025May 8, 2025
30d
Robert P. Bresnahan, Jr., RepublicanRobert P. Bresnahan, Jr.R-PA
Selljoint$1K – $15KJan 13, 2025Feb 13, 2025
31d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Selljoint$1K – $15KMay 3, 2024Jun 14, 2024
42d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Buyjoint$1K – $15KOct 17, 2023Nov 16, 2023
30d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Sell (part)joint$1K – $15KApr 3, 2023May 12, 2023
39d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Sell (part)joint$1K – $15KApr 3, 2023May 12, 2023
39d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Sell (part)joint$1K – $15KApr 3, 2023May 11, 2023
38d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Sell (part)joint$1K – $15KApr 3, 2023May 11, 2023
38d
Tommy Tuberville, RepublicanTommy TubervilleR-AL
Buyjoint$1K – $15KSep 30, 2021Oct 15, 2021
15d
Donna E. Shalala, DemocratDonna E. ShalalaD-FL
Sell$1K – $15KJun 24, 2019Apr 27, 2020
308d · late
James B. Renacci, RepublicanJames B. RenacciR-OH
Buyjoint$1K – $15KApr 1, 2016Apr 19, 2016
18d
James B. Renacci, RepublicanJames B. RenacciR-OH
Buyjoint$1K – $15KDec 18, 2015Jan 6, 2016
19d

Disclosures are filed up to 45 days after a trade, so this is a record rather than a signal. Amounts are bracket midpoints. Symbols are recorded as they existed on the trade date and mapped forward where a company was renamed.