Insider buying last 90 days
No open-market insider purchases were filed for MPWR in the last 90 days.
From Form 4 filings, dated to when each was filed.
Close on Sep 18, 2026. Page updated Sep 19, 9:19 pm ET.
Monolithic Power Systems closed at $1217.80, up 4.1%, sitting between its 50-day average of $1303.07 and 200-day average of $1263.60. The GekkoIndex reads 64.4, placing the stock in the Accumulation zone, and price sits 8.6% below Gekko Fair Value of $1332.62. Over the past year the stock has returned 38.8%, though the three-month return stands at -22.1% and the one-month return at -6.3%, with the 52-week range spanning $833.18 to $1714.09.
The past week's activity centered on sector-wide semiconductor selling, with MPWR falling alongside peers such as Marvell, Intel, Applied Materials, Lam Research and MACOM after CEOs of Anthropic, OpenAI and SpaceX called for a slowdown in AI model development over safety concerns. The stock dropped 7.39% on 14 September to $1143.24 before later trading near $1160.00, with a trailing price-to-earnings ratio of 70.01 and market capitalization of $56.44 billion. Company-specific news included a long-term manufacturing agreement with GlobalFoundries for its 300mm Singapore fab and a declared third-quarter dividend of $2.00 per share, payable 15 October 2026.
Looking ahead, the next earnings report is scheduled for 29 October 2026, 39 days away, following a July quarter that produced $5.41 EPS against an $4.84 estimate and a 14.2% reaction, with 8 beats in the last 8 quarters. Options activity shows 1 unusual signal in the past 30 days, entirely call premium of $1,377,085 with no put premium. Seasonality over 5 years shows an average 20-day return of -1%, positive in 4 of those years. Analyst consensus stands at 9 buy, 1 hold, 0 sell ratings among 10 firms, with a consensus target of $1839.80.
Written by AI and checked automatically against the figures on this page. Generated Sep 20, 2026 from the data above.
Monolithic Power Systems scores 4 supportive, 2 mixed and 0 headwinds across the 6 checklist items with data.
Six things swing traders check before a 20-day hold, read from the latest data.
4 supportive2 mixed0 headwinds
Averages disagree
Close $1217.80 sits between the 50-day ($1303.07) and 200-day ($1263.60) averages, or the averages disagree.
See the chart64.4, Accumulation
Reading 64.4 is in the Accumulation zone.
See the GekkoIndex8.6% below
Price is 8.6% below Gekko Fair Value (more than 5% below).
See fair valueLeans bullish
Last 30 days: 1 unusual options signal.
See smart moneyReports in 39 days
Next report Oct 29, 2026, 39 days away — outside a typical 20-trading-day hold.
See earnings−1.0% on average
From this point in the calendar, the next 20 trading days averaged −1% over 5 years, rising in 4 of them.
See seasonalityA description of current data, not a recommendation. How this page works
Monolithic Power Systems closed at $1,217.80 on Sep 18, 2026, +38.8% over the past year, inside a 52-week range of $833.18 to $1,714.09.
Use the left and right arrow keys to read daily values.
Put MPWR on a Gekko watchlist and see its GekkoIndex, Gekko Fair Value and smart money signals update on the chart as they change.
Monolithic Power Systems designs and markets semiconductor chips used to manage electrical power in electronic devices. Its components serve industries such as computing, data storage, automotive, industrial equipment, telecommunications, and consumer electronics. The company is particularly known for its DC to DC integrated circuits, which regulate and convert voltage in products ranging from laptops and displays to wireless networking equipment, car entertainment systems, and medical devices. It also makes lighting control chips used in LCD screens found in monitors, televisions, vehicle navigation systems, and laptops, as well as products for general lighting purposes.
The company sells to equipment makers, design firms, and electronics assembly businesses, reaching them both through its own sales force and through distributors and resellers. Its customer base spans a wide set of regions, including China, Taiwan, South Korea, Japan, Southeast Asia, Europe, and the United States.
Monolithic Power Systems was established in 1997 and is headquartered in Kirkland, Washington. Its shares trade on the NASDAQ under the ticker MPWR.
Monolithic Power Systems’s GekkoIndex — Gekko’s 0 to 100 smart money score — reads 64.4, in the Accumulation zone, down 0.7 points over five sessions.
Down 0.7 points over five sessions.
Reading for Sep 18, 2026
| Zone | Readings | 5 days | 20 days | ||
|---|---|---|---|---|---|
| Buying | 20 | −4.0% | +0.6% | ||
| Accumulation (current zone) | 186 | +1.4% | +7.8% | ||
| Neutral | 407 | +0.6% | +1.1% | ||
| Distribution | 48 | +1.0% | +4.0% | ||
| Selling | 1 | Too few readings yet | |||
Average MPWR share-price change over the trading days after each daily reading in its GekkoIndex history. Across every stock Gekko tracks, Accumulation readings averaged +2.3% over 20 days. Past behaviour doesn’t guarantee future results.
Accumulation zone: Institutional interest building. About the five zones →
Monolithic Power Systems trades 8.6% below Gekko Fair Value of $1,332.62, so the shares are undervalued on Gekko’s estimate.
Gekko’s own estimate of what Monolithic Power Systems shares are worth, recalculated every trading day.
$1,332.62
Gekko Fair Value, Sep 19, 2026
8.6% Undervalued
No open-market insider purchases were filed for Monolithic Power Systems, and no Congress trades were disclosed, in the last 90 days.
Plus buybacks, unusual options and fund positions, each dated to when it became public.
No open-market insider purchases were filed for MPWR in the last 90 days.
From Form 4 filings, dated to when each was filed.
No trades in MPWR were disclosed by members of Congress in the last 90 days.
From congressional disclosures, which report amounts as ranges.
Monolithic Power Systems has been buying back its own shares.
From company filings.
1signal, 100% of the flagged premium in calls.
Latest: Bullish flow on Sep 17, $1.38M in unusual premium.
2of the funds Gekko tracks hold MPWR.
Monolithic Power Systems reports on Oct 29, 2026, after the close (39 days away), and beat the EPS estimate in 8 of its last 8 reports.
Oct 29, 2026
Expected after the close, 39 days away
| Reported | EPS | Revenue | Move |
|---|---|---|---|
| Jul 30, 2026 | $5.41 est $4.84 | $980.6M est $903.3M | +14.2% |
| Apr 30, 2026 | $5.10 est $4.60 | $804.2M est $781.9M | +3.7% |
| Feb 5, 2026 | $4.79 est $4.74 | $751.2M est $742.4M | +8.2% |
| Oct 30, 2025 | $4.73 est $4.64 | $737.2M est $722.4M | −8.1% |
| Jul 31, 2025 | $4.21 est $4.12 | $664.6M est $652.0M | +7.5% |
| May 1, 2025 | $4.04 est $4.01 | $637.6M est $634.2M | +7.4% |
| Feb 6, 2025 | $4.09 est $3.98 | $621.7M est $608.1M | +10.2% |
| Oct 30, 2024 | $4.06 est $3.97 | $620.1M est $600.6M | −18.6% |
“Move” is the close of the first session after the report compared with the close of the last session before it, so it reads the same whether the company reported before the open or after the close.
Analysts’ average 12-month price target for Monolithic Power Systems is $1,839.80, +51.1% from the last close, from 10 firms rating the stock in the last 90 days.
Each firm’s latest rating in the last 90 days: 10 firms.
| Date | Firm | Target | vs price |
|---|---|---|---|
| Jul 31 | Truist Financial | $1,889 | +55.1% |
| Jul 31 | Stifel Nicolaus | $1,800 | +47.8% |
| Jul 31 | Needham | $2,000 | +64.2% |
| Jul 31 | Citi | $1,820 | +49.4% |
| Jul 31 | Wells Fargo | $1,800 | +47.8% |
Gekko doesn’t publish price predictions. These are analyst targets and historical base rates, which don’t guarantee future results.
Over the next 20 trading days from Sep 19, Monolithic Power Systems averaged −1.0% across the last 5 years, rising in 4 of them.
| Window | Average | Years higher |
|---|---|---|
| Next 5 trading days | −1.5% | 2 of 5 |
| Next 10 trading days | −1.9% | 2 of 5 |
| Next 15 trading days | −1.7% | 2 of 5 |
| Next 20 trading days | −1.0% | 4 of 5 |
| Next 30 trading days | +0.5% | 3 of 5 |
For scale, MPWR’s typical 20-trading-day move in either direction is about 8.8%.
Monolithic Power Systems’s market cap is $59.83B, with a P/E ratio of 70 and revenue of $3.27B over the last twelve months.
Coverage of Monolithic Power Systems this week reads positive: 6 positive, 0 neutral and 4 negative headlines.
Monolithic Power Systems’s 6 largest industry peers by market value, with today’s move, GekkoIndex zone and gap to Gekko Fair Value.
| Stock | GekkoIndex zone | vs Fair Value |
|---|---|---|
| NVDANVIDIA | Neutral | 16.4% below |
| AVGOBroadcom | Accumulation | 0.8% below |
| MUMicron Technology | Neutral | 2.5% above |
| AMDAdvanced Micro Devices | Neutral | 11.9% above |
| INTCIntel | Neutral | 12.9% above |
| TXNTexas Instruments | Accumulation | 3.3% above |
A peer links to its own page where one exists.
Monolithic Power Systems’s market cap is $59.83B at the Sep 18, 2026 close of $1,217.80, with 49.14M shares outstanding. The shares trade on a P/E ratio of 70.
The consensus analyst 12-month price target for Monolithic Power Systems is $1,839.80, +51.1% from the last close. Of the 10 firms that rated the stock in the last 90 days, 9 rate it a buy, 1 a hold and 0 a sell. Gekko doesn’t publish price predictions of its own.
On Gekko’s estimate Monolithic Power Systems is undervalued: the Sep 18, 2026 close of $1,217.80 is 8.6% below Gekko Fair Value of $1,332.62. Gekko Fair Value is recalculated every trading day, and a gap inside 5% either way counts as about fair value.
Monolithic Power Systems is expected to report on Oct 29, 2026, after the market closes (39 days away). Analysts expect earnings of $7.69 per share on revenue of $1.15B. Monolithic Power Systems beat the earnings estimate in 8 of its last 8 reports, moving 9.7% on average across the report.
Monolithic Power Systems’s 52-week high is $1,714.09 and its 52-week low is $833.18; it closed at $1,217.80 on Sep 18, 2026, +38.8% over the past year.
Gekko describes the data; it does not make buy or sell recommendations. On the swing-trade checklist, 4 of the 6 items with data read as supportive (gekkoindex, fair value, smart money and earnings risk), 2 as mixed (trend and seasonality). The checklist is a description of current data, not a recommendation.
Gekko flagged 1 unusual options signal in Monolithic Power Systems over the last 30 days, with $1.38M of flagged premium in calls and $0 in puts. The latest, bullish flow, was on Sep 17, 2026 with $1.38M in unusual premium. The signal-by-signal table is in Gekko.
Prices and signals update after every US market close; the GekkoIndex, Gekko Fair Value and the checklist are Gekko’s own, and the Gekko Brief is written by AI from this page’s data and checked against it before it is published. How Gekko’s data works →
Every GekkoIndex reading, insider trade, options bet and Congress disclosure plotted on the chart, plus the 5,800-name screener and trade planning tools.
Join 1,349 other traders using Gekko
Start Your FREE 7 Day Trial → Every feature unlocked. No credit card required.Type a ticker or company name. Press Esc to close.