Public research preview
Byron Donalds, Representative disclosure: Monolithic Power Systems, Inc. - Common Stock (MPWR)
Disclosed a sell transaction in Monolithic Power Systems, Inc. - Common Stock (MPWR). Use this page to inspect source evidence, confidence scores, filing delay, and post-disclosure price movement before deciding whether to research the signal further.
This public page is for public-disclosure research only. It is not investment advice and does not place orders. Verify the official source before relying on any signal.
Evidence passport
Official-source context and parser confidence before any simulation or alert decision.
- Source
- House STOCK Act disclosures
- Published
- 15 Jul 2026, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%
- Filing delay
- 40 days
Timeline
Transaction date
5 Jun 2026
Public disclosure
15 Jul 2026
Now
Tracked today
Filing delay: 40 days
Price movement
Complete coverage
- Provider
- Yahoo Finance daily close
- Fetched
- 31 Aug 2026
Most of the move happened before this disclosure became public: the stock peaked +11.6% above the transaction-date close and has since retraced -18.0% from that peak. Buying now is a pullback entry on the disclosed position, not a fresh breakout.
Stock path
MPWR from pre-transaction context through latest close.
Transaction
5 Jun 2026 · 1,478.794 USD · Not public yet
System decision
Would not buy — The strategy's filters reject this signal. Failed filters: Buy disclosure · Filed within 30 days.
- Not public yet
- Would not buy
- Observed transaction close
- 1,478.794
- Observed disclosure close
- 1,352.66
- Observed latest close
- 1,267.77
- Pre-disclosure move
- -8.5%
- Post-disclosure move
- -6.3%
- Market-adjusted move
- -7.9%
- 1w since disclosure
- +3.4%
- 1m since disclosure
- +3.6%
- 3m since disclosure
- —
- Pre-disclosure peak run-up
- +11.6%
- Retrace from peak
- -18.0%
Why Copy Window is Probably too late
Supporting factors
- Parsed sell disclosure for ordinary shares from House STOCK Act disclosures.
- Reported amount is $1,001 - $15,000.
- Post-disclosure move is calculated from Yahoo Finance daily close daily closes.
Cautions
- Yahoo Finance daily close coverage is end-of-day and should be verified against the official price source.
- Review the original source document before making any investment decision.
Source document
House STOCK Act disclosures, published 15 Jul 2026, 00:00
- Parser confidence
- 94%
- Instrument mapping
- 95%