Monolithic Power Systems, Inc. (MPWR)
MPWR moved a median of -0.08% 30 minutes after news, and +0.16% by the close. How MPWR actually reacts to news — the realized, point-in-time move the market made, measured across 1,274 labeled events over the last three years with zero look-ahead.
MPWR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.01% | 51% | 1,269 |
| 30-min | -0.08% | 48% | 1,274 |
| 60-min | +0.03% | 51% | 1,274 |
| to close | +0.16% | 53% | 1,270 |
| Middle 50% of MPWR reactions | -0.71% to +0.58% |
|---|---|
| Median reaction (30-min) | -0.08% |
| Measured reactions | 1,274 |
Half of all Monolithic Power Systems, Inc. news events land between -0.71% and +0.58% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How MPWR reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 16 | +0.71% | 56% | -0.19% |
| Coverage initiations | 13 | +1.00% | 77% | +0.93% |
| Rating reiterations | 121 | +0.09% | 53% | +0.67% |
| Price-target raises | 47 | -0.06% | 40% | -0.11% |
| Price-target cuts | 12 | -1.42% | 33% | +0.32% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 1 further class was observed with fewer than 10 measured events and is not published. See how MPWR ranks against every other measured name →
That’s how MPWR usually reacts — get an email when it moves on news →Email me when MPWR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MPWR's baseline. Nothing else.
Recent MPWR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.16% | +0.47% | |
| Monolithic Power Systems to Report Third Quarter 2026 Results on October 29, 2026 | Press release | GlobeNewswire | -0.49% | -0.65% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | +0.18% | +2.80% | |
| Monolithic Power Systems Announces Third Quarter 2026 Dividend | Press release | GlobeNewswire | +0.18% | +2.80% | |
| Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.97% | +0.20% | |
| Form 10-Q MONOLITHIC POWER SYSTEMS For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.82% | +3.47% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Jul 30 | SEC filing · Form 8-K | SEC EDGAR | +4.46% | -4.87% | |
| Monolithic Power Systems Reports Second Quarter Results on July 30, 2026 | Press release | GlobeNewswire | +4.46% | -4.87% | |
| Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +0.31% | -2.66% | |
| Monolithic Power Systems to Report Second Quarter 2026 Results on July 30, 2026 | Press release | GlobeNewswire | -0.62% | -3.80% | |
| Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +1.21% | +2.05% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | +0.72% | -0.02% | |
| Monolithic Power Systems Announces Second Quarter 2026 Dividend | Press release | GlobeNewswire | +0.72% | -0.02% | |
| Did Monolithic Power Systems, Inc. Insiders Breach their Fiduciary Duties to Shareholders? | Press release | PR Newswire | +1.05% | +2.57% | |
| Form SD MONOLITHIC POWER SYSTEMS | SEC filing · Form SD | SEC EDGAR | -0.22% | +0.15% | |
| Form 10-Q MONOLITHIC POWER SYSTEMS For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -1.39% | -0.40% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Apr 30 | SEC filing · Form 8-K | SEC EDGAR | -1.36% | +1.01% | |
| Form ARS MONOLITHIC POWER SYSTEMS For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.33% | +2.85% | |
| Form DEF 14A MONOLITHIC POWER SYSTEMS For: Jun 11 | SEC filing · Form DEF | SEC EDGAR | +0.16% | +2.47% | |
| Form DEFA14A MONOLITHIC POWER SYSTEMS | SEC filing · Form DEFA14A | SEC EDGAR | -0.36% | +2.34% | |
| Monolithic Power Systems Prevails in Patent Infringement Lawsuit Brought by Bel Power Solutions in West Texas, with Bel Power Solutions Paying Costs | Press release | GlobeNewswire | -1.36% | +1.01% | |
| Monolithic Power Systems Reports First Quarter Results on April 30, 2026 | Press release | GlobeNewswire | -1.36% | +1.01% | |
| Monolithic Power Systems to Report First Quarter 2026 Results on April 30, 2026 | Press release | GlobeNewswire | +0.42% | +2.72% | |
| Form 10-K MONOLITHIC POWER SYSTEMS For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.25% | +3.35% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | +1.25% | +3.35% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Feb 03 | SEC filing · Form 8-K | SEC EDGAR | -4.71% | -1.61% | |
| Monolithic Power Systems Announces CFO Transition | Press release | GlobeNewswire | -4.71% | -1.61% | |
| Monolithic Power Systems Announces Results for the Fourth Quarter and Year Ended December 31, 2025 and an Increase in Quarterly Cash Dividend | Press release | GlobeNewswire | -4.71% | -1.61% | |
| Monolithic Power Systems Provides Earnings Commentary for the Quarter and Year Ended December 31, 2025 | Press release | GlobeNewswire | -4.71% | -1.61% | |
| Monolithic Power Systems to Report Fourth Quarter and Full Year 2025 Results on February 5, 2026 | Press release | GlobeNewswire | +0.73% | -0.45% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Dec 12 | SEC filing · Form 8-K | SEC EDGAR | +1.12% | -1.19% | |
| Monolithic Power Systems Announces Fourth Quarter 2025 Dividend | Press release | GlobeNewswire | +1.12% | -1.19% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Nov 19 | SEC filing · Form 8-K | SEC EDGAR | +0.21% | +0.59% | |
| Form 10-Q MONOLITHIC POWER SYSTEMS For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.44% | -4.29% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Oct 30 | SEC filing · Form 8-K | SEC EDGAR | -7.04% | -1.49% | |
| Monolithic Power Systems Announces Results for the Third Quarter Ended September 30, 2025 | Press release | GlobeNewswire | -7.04% | -1.49% | |
| Monolithic Power Systems Provides Earnings Commentary for the Quarter Ended September 30, 2025 | Press release | GlobeNewswire | -7.04% | -1.49% | |
| Monolithic Power Systems to Report Third Quarter 2025 Results on October 30, 2025 | Press release | GlobeNewswire | +0.11% | -8.22% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Sep 11 | SEC filing · Form 8-K | SEC EDGAR | -0.52% | -1.28% | |
| Monolithic Power Systems Announces Third Quarter 2025 Dividend | Press release | GlobeNewswire | -0.52% | -1.28% | |
| Form 10-Q MONOLITHIC POWER SYSTEMS For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.93% | -3.28% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Jul 31 | SEC filing · Form 8-K | SEC EDGAR | -0.08% | +6.17% | |
| Monolithic Power Systems Announces Results for the Second Quarter Ended June 30, 2025 | Press release | GlobeNewswire | -0.08% | +6.17% | |
| Monolithic Power Systems Provides Earnings Commentary for the Quarter Ended June 30, 2025 | Press release | GlobeNewswire | -0.08% | +6.17% | |
| Monolithic Power Systems to Report Second Quarter 2025 Results on July 31, 2025 | Press release | GlobeNewswire | -0.21% | -0.35% | |
| Form 8-K MONOLITHIC POWER SYSTEMS For: Jun 12 | SEC filing · Form 8-K | SEC EDGAR | +0.13% | -1.30% | |
| Monolithic Power Systems Announces Second Quarter 2025 Dividend | Press release | GlobeNewswire | +0.25% | +3.23% | |
| Form SD MONOLITHIC POWER SYSTEMS | SEC filing · Form SD | SEC EDGAR | +0.01% | -0.60% | |
| Form 10-Q MONOLITHIC POWER SYSTEMS For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.15% | +0.43% | |
| Lifshitz Law PLLC Announces Investigations of Monolithic Power Systems, Inc. (NASDAQ: MPWR), TransMedics Group, Inc. (NASDAQ: TMDX), Venture Global, Inc. (NYSE: VG), and The Trade Desk, Inc. (NASDAQ: TTD) | Press release | ACCESS Newswire | +0.97% | -1.14% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MPWR section they belong to.
Where else MPWR is measured.
MPWR earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| MEDIDATA SOLUTIONS (MDSO) | 1,279 | +0.04% | 52% |
| USA TECHNOLOGIES (USAT) | 1,279 | 0.00% | 48% |
| Extreme Networks, Inc. (EXTR) | 1,267 | +0.13% | 55% |
| Accenture plc Class A Ordinary Shares (Ireland) (ACN) | 1,265 | +0.13% | 58% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Technology names, measured the same way →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is Monolithic Power Systems, Inc.'s median reaction calculated?
Every labeled MPWR news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 1,274 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 48% of MPWR's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MPWR's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.