Monolithic Power Systems (MPWR) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $1,249.20, +0.49% vs the prior close of $1,243.11.
- Volume 991.30K shares, 1.5x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
MPWR rises 0.5% to $1,249.20. Closed at $1,249.20, +0.49% vs the prior close of $1,243.11. Day range $1,195.00–$1,260.24, opened at $1,198.15.
MPWR daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — MPWR rises 0.5% to $1,249.20
- Closed at $1,249.20, +0.49% vs the prior close of $1,243.11. Day range $1,195.00–$1,260.24, opened at $1,198.15.
- Volume was 991.30K shares, 1.5x its 50-day average of 660.48K.
- Price is -4.7% vs its 50-day average ($1,310.45) and -4.1% vs its 200-day average ($1,302.40).
- 52-week range $833.18–$1,714.09; today's close sits at 47% of that range, 27.1% below the 52-week high.
Oct 14, 2026 — MPWR slides 5.8% to $1,243.11
- Closed at $1,243.11, -5.79% vs the prior close of $1,319.55. Day range $1,234.36–$1,300.76, opened at $1,295.00.
- Volume was 1.12M shares, 1.7x its 50-day average of 662.62K.
- Price is -5.3% vs its 50-day average ($1,312.38) and -4.4% vs its 200-day average ($1,300.81).
- 52-week range $833.18–$1,714.09; today's close sits at 47% of that range, 27.5% below the 52-week high.
Oct 13, 2026 — MPWR ends flat (+0.0%) to $1,319.55
- Closed at $1,319.55, +0.02% vs the prior close of $1,319.23. Day range $1,283.81–$1,322.40, opened at $1,294.29.
- Volume was 730.80K shares, 1.1x its 50-day average of 672.30K.
- Price is +0.4% vs its 50-day average ($1,314.22) and +1.6% vs its 200-day average ($1,299.32).
- 52-week range $833.18–$1,714.09; today's close sits at 55% of that range, 23.0% below the 52-week high.
Oct 12, 2026 — MPWR slides 4.8% to $1,319.23
- Closed at $1,319.23, -4.84% vs the prior close of $1,386.29. Day range $1,314.52–$1,365.36, opened at $1,365.36.
- Volume was 869.80K shares, 1.3x its 50-day average of 685.82K.
- Price is +0.3% vs its 50-day average ($1,314.71) and +1.7% vs its 200-day average ($1,297.49).
- 52-week range $833.18–$1,714.09; today's close sits at 55% of that range, 23.0% below the 52-week high.
Oct 9, 2026 — MPWR rises 1.2% to $1,386.29
- Closed at $1,386.29, +1.20% vs the prior close of $1,369.80. Day range $1,351.26–$1,401.76, opened at $1,396.53.
- Volume was 433.70K shares, 0.6x its 50-day average of 711.55K.
- Price is +5.3% vs its 50-day average ($1,316.85) and +7.0% vs its 200-day average ($1,295.61).
- 52-week range $833.18–$1,714.09; today's close sits at 63% of that range, 19.1% below the 52-week high.
Oct 8, 2026 — MPWR slides 3.9% to $1,369.80, 3 down days in a row
- Closed at $1,369.80, -3.94% vs the prior close of $1,425.98. Day range $1,349.39–$1,416.62, opened at $1,405.99.
- Volume was 848.10K shares, 1.2x its 50-day average of 718.23K.
- Price is +4.1% vs its 50-day average ($1,315.45) and +5.9% vs its 200-day average ($1,293.41).
- 52-week range $833.18–$1,714.09; today's close sits at 61% of that range, 20.1% below the 52-week high.
- That makes 3 straight losses.
Oct 7, 2026 — MPWR slides 3.2% to $1,425.98
- Closed at $1,425.98, -3.24% vs the prior close of $1,473.69. Day range $1,412.68–$1,450.71, opened at $1,447.64.
- Volume was 481.70K shares, 0.7x its 50-day average of 728.73K.
- Price is +8.6% vs its 50-day average ($1,313.03) and +10.4% vs its 200-day average ($1,291.24).
- 52-week range $833.18–$1,714.09; today's close sits at 67% of that range, 16.8% below the 52-week high.
Oct 6, 2026 — MPWR dips 0.4% to $1,473.69
- Closed at $1,473.69, -0.42% vs the prior close of $1,479.89. Day range $1,458.79–$1,491.64, opened at $1,487.88.
- Volume was 374.70K shares, 0.5x its 50-day average of 738.21K — lighter than usual.
- Price is +12.5% vs its 50-day average ($1,310.15) and +14.3% vs its 200-day average ($1,288.76).
- 52-week range $833.18–$1,714.09; today's close sits at 73% of that range, 14.0% below the 52-week high.
Oct 5, 2026 — MPWR rises 2.8% to $1,479.89, a 3-month high, 3 up days in a row
- Closed at $1,479.89, +2.79% vs the prior close of $1,439.73. Day range $1,432.38–$1,482.97, opened at $1,444.41.
- Volume was 685.40K shares, 0.9x its 50-day average of 740.61K.
- Price is +13.2% vs its 50-day average ($1,307.45) and +15.1% vs its 200-day average ($1,285.95).
- 52-week range $833.18–$1,714.09; today's close sits at 73% of that range, 13.7% below the 52-week high.
- That makes 3 straight gains.
Oct 2, 2026 — MPWR jumps 5.8% to $1,439.73, a 3-month high
- Closed at $1,439.73, +5.79% vs the prior close of $1,360.97. Day range $1,393.13–$1,455.99, opened at $1,406.00.
- Volume was 705.30K shares, 1.0x its 50-day average of 740.56K.
- Price is +10.4% vs its 50-day average ($1,304.53) and +12.2% vs its 200-day average ($1,283.31).
- 52-week range $833.18–$1,714.09; today's close sits at 69% of that range, 16.0% below the 52-week high.
MPWR latest news & SEC filings
Every SEC filing by or about MPWR in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Sep 30, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Hsing Michael sold 596 shares at $1,323.31 (≈$788.69K) on Sep 28, 2026; now holds 847,668
- Hsing Michael sold 2,121 shares at $1,328.54 (≈$2.82M) on Sep 28, 2026; now holds 845,547
- Hsing Michael sold 1,111 shares at $1,333.34 (≈$1.48M) on Sep 28, 2026; now holds 844,436
- Hsing Michael sold 2,949 shares at $1,338.66 (≈$3.95M) on Sep 28, 2026; now holds 841,487
- Hsing Michael sold 5,783 shares at $1,343.76 (≈$7.77M) on Sep 28, 2026; now holds 835,704
- Hsing Michael sold 6,343 shares at $1,347.15 (≈$8.54M) on Sep 28, 2026; now holds 829,361
- …plus 2 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 28, 2026 · 144 — Notice of proposed sale (Form 144)
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Sep 10, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 8.01 — Reported other events the company considers important.
Sep 2, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 26, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Dean Robert W Ii sold 32 shares at $1,297.72 (≈$41.53K) on Aug 24, 2026
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 25, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Chang Kuo Wei Herbert sold 50 shares at $1,281.57 (≈$64.08K) on Aug 24, 2026
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 24, 2026 · 144 — Notice of proposed sale (Form 144)
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Aug 5, 2026 · 10-Q — Quarterly report (unaudited financial statements for the quarter)
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $980.64M (prior year $664.57M) (+47.6% vs Jun 30, 2025)
- Net income: $257.30M (prior year $135.01M) (+90.6% vs Jun 30, 2025)
- Diluted EPS: $5.22 (prior year $2.81) (+85.8% vs Jun 30, 2025)
Jul 30, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jul 15, 2026 · SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Jul 8, 2026 · SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Things to know before you trade MPWR
- Last results release: Jul 30, 2026 (8-K Item 2.02). Previous ones: Apr 30, 2026, Feb 5, 2026, Oct 30, 2025. Based on that rhythm, the next report is likely around Oct 29, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 2.73% (largest 8.1%).
- Liquidity: about 754.84K shares (≈$942.95M) trade per day on average.
- 52-week position: $1,249.20 vs a range of $833.18–$1,714.09 (47% of the range).
- Dividends: last ex-dividend date Sep 30, 2026 ($2/share); 4 payments in the past 12 months.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 25 sales; latest: Michael Hsing sold 596 shares on Sep 28, 2026.
- Latest filings: 8-K Sep 10, 2026; 10-Q Aug 5, 2026; 8-K Jul 30, 2026.
- Share count: 49.14M shares outstanding (Jul 29, 2026), +2.6% vs a year earlier.
- Listing: Nasdaq · industry: Semiconductors & Related Devices.
MPWR market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 1,198.15 | 1,260.24 | 1,195.00 | 1,249.20 | 991.30K |
| Oct 14, 2026 | 1,295.00 | 1,300.76 | 1,234.36 | 1,243.11 | 1.12M |
| Oct 13, 2026 | 1,294.29 | 1,322.40 | 1,283.81 | 1,319.55 | 730.80K |
| Oct 12, 2026 | 1,365.36 | 1,365.36 | 1,314.52 | 1,319.23 | 869.80K |
| Oct 9, 2026 | 1,396.53 | 1,401.76 | 1,351.26 | 1,386.29 | 433.70K |
| Oct 8, 2026 | 1,405.99 | 1,416.62 | 1,349.39 | 1,369.80 | 848.10K |
| Oct 7, 2026 | 1,447.64 | 1,450.71 | 1,412.68 | 1,425.98 | 481.70K |
| Oct 6, 2026 | 1,487.88 | 1,491.64 | 1,458.79 | 1,473.69 | 374.70K |
| Oct 5, 2026 | 1,444.41 | 1,482.97 | 1,432.38 | 1,479.89 | 685.40K |
| Oct 2, 2026 | 1,406.00 | 1,455.99 | 1,393.13 | 1,439.73 | 705.30K |
| Oct 1, 2026 | 1,359.98 | 1,368.67 | 1,331.00 | 1,360.97 | 492.30K |
| Sep 30, 2026 | 1,353.77 | 1,361.44 | 1,324.96 | 1,347.22 | 465.20K |
| Sep 29, 2026 | 1,372.05 | 1,374.32 | 1,347.85 | 1,355.99 | 450.00K |
| Sep 28, 2026 | 1,353.13 | 1,359.76 | 1,320.80 | 1,351.20 | 659.40K |
| Sep 25, 2026 | 1,332.63 | 1,377.14 | 1,329.47 | 1,367.43 | 536.60K |
| Sep 24, 2026 | 1,317.09 | 1,349.64 | 1,313.09 | 1,335.55 | 492.50K |
| Sep 23, 2026 | 1,367.08 | 1,371.66 | 1,302.10 | 1,355.47 | 767.00K |
| Sep 22, 2026 | 1,278.08 | 1,387.46 | 1,271.03 | 1,380.62 | 1.53M |
| Sep 21, 2026 | 1,243.25 | 1,283.83 | 1,217.24 | 1,277.68 | 1.03M |
| Sep 18, 2026 | 1,185.52 | 1,221.51 | 1,176.21 | 1,217.80 | 1.43M |
About Monolithic Power Systems
Monolithic Power Systems (MPWR) is listed on the Nasdaq and classified by the SEC under “Semiconductors & Related Devices”. Its business address is in WEST PALM BEACH, FL. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1280452.
MPWR board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Kuo Wei Herbert Chang | Director | Aug 25, 2026 |
| Eugen J Elmiger | Director | May 8, 2026 |
| Michael Hsing | CEO | Sep 30, 2026 |
| Victor K Lee | Director | Feb 11, 2026 |
| Carintia Martinez | Director | Feb 5, 2026 |
| Eileen Wynne | Director | May 8, 2026 |
| Jeff Zhou | Director | May 27, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Theodore Blegen | EVP and CFO | Feb 10, 2026 |
| Robert W Ii Dean | Interim CFO | Aug 26, 2026 |
| Michael Hsing | CEO | Sep 30, 2026 |
| Maurice Sciammas | EVP, WW Sales & Marketing | Aug 6, 2026 |
| Saria Tseng | EVP & General Counsel | Sep 2, 2026 |
| Deming Xiao | EVP, Global Operations | May 8, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 28, 2026 | Michael Hsing | Sale | 596 | $1,323.31 |
| Sep 28, 2026 | Michael Hsing | Sale | 2,121 | $1,328.54 |
| Sep 28, 2026 | Michael Hsing | Sale | 1,111 | $1,333.34 |
| Sep 28, 2026 | Michael Hsing | Sale | 130 | $1,356.94 |
| Sep 28, 2026 | Michael Hsing | Sale | 5,783 | $1,343.76 |
| Sep 28, 2026 | Michael Hsing | Sale | 6,343 | $1,347.15 |
| Sep 28, 2026 | Michael Hsing | Sale | 10,967 | $1,351.43 |
| Sep 28, 2026 | Michael Hsing | Sale | 2,949 | $1,338.66 |
| Aug 24, 2026 | Robert W Ii Dean | Sale | 32 | $1,297.72 |
| Aug 24, 2026 | Kuo Wei Herbert Chang | Sale | 50 | $1,281.57 |
| Aug 17, 2026 | Robert W Ii Dean | Sale | 6 | $1,413.64 |
| Aug 11, 2026 | Kuo Wei Herbert Chang | Sale | 50 | $1,420.00 |
| Aug 5, 2026 | Robert W Ii Dean | Sale | 105 | $1,344.27 |
| Aug 3, 2026 | Maurice Sciammas | Sale | 30 | $1,343.94 |
| Jul 15, 2026 | Maurice Sciammas | Sale | 240 | $1,369.18 |
MPWR financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $2.79B | $621.48M | 12.86 | $838.20M |
| Dec 31, 2024 | $2.21B | $1.59B | 32.60 | $788.41M |
| Dec 31, 2023 | $1.82B | $427.37M | 8.76 | $638.21M |
| Dec 31, 2022 | $1.79B | $437.67M | 9.05 | $246.67M |
| Dec 31, 2021 | $1.21B | $242.02M | 5.05 | $320.01M |
Latest balance sheet: total assets $4.69B, total liabilities $790.78M, cash $1.01B (as of Jun 30, 2026).
MPWR earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Jul 30, 2026 | 8-K Item 2.02 (results) | $1,316.18 |
| Apr 30, 2026 | 8-K Item 2.02 (results) | $1,614.41 |
| Feb 5, 2026 | 8-K Item 2.02 (results) | $1,155.99 |
| Oct 30, 2025 | 8-K Item 2.02 (results) | $1,087.56 |
| Jul 31, 2025 | 8-K Item 2.02 (results) | $711.24 |
| May 1, 2025 | 8-K Item 2.02 (results) | $601.63 |
| Feb 6, 2025 | 8-K Item 2.02 (results) | $660.90 |
| Oct 30, 2024 | 8-K Item 2.02 (results) | $919.81 |
| Aug 1, 2024 | 8-K Item 2.02 (results) | — |
| May 1, 2024 | 8-K Item 2.02 (results) | — |
| Feb 7, 2024 | 8-K Item 2.02 (results) | — |
| Oct 30, 2023 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.