MONOLITHIC POWER SYSTEMS INC
MPWRNasdaqTechnology · Semiconductors & Related Devices · DE · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annual| FY25 | FY24 | FY23 | FY22 | FY21 | FY20 | |
|---|---|---|---|---|---|---|
| Revenue | $637.6M | $2.21B | $1.82B | $1.79B | $1.21B | $844.5M |
| Operating income | $168.8M | $539.4M | $481.7M | $526.8M | $262.4M | $158.9M |
| Net income | $135.1M | $1.59B | $427.4M | $437.7M | $242.0M | $164.4M |
| Total assets | $3.71B | $3.52B | $2.43B | $2.06B | $1.59B | $1.21B |
| Total liabilities | $631.5M | $564.7M | $384.4M | $390.3M | $341.8M | $241.9M |
| Equity | $3.07B | $2.95B | $2.05B | $1.67B | $1.24B | $966.6M |
| EPS (diluted) | $2.81 | $32.60 | $8.76 | $9.05 | $5.05 | $3.50 |
| Shares out. | 47.9M | 48.7M | 47.3M | 46.5M | 45.6M | 44.6M |
Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.
Key ratios
from filings · FY2025- Operating margin
- 26.5%
- Net margin
- 21.2%
- Return on equity
- 4.4%
- Return on assets
- 3.6%
- Return on capital (ROCE)
- 5.1%
- Liabilities / assets
- 17.0%
- Debt / equity
- 0.21×
- Book value / share
- $64.21
- Revenue growth (YoY)
- −71.1%
- Net income growth (YoY)
- −91.5%
Computed from the company's own SEC figures — no market price, so these are facts, not a valuation. Book value per share is reported equity ÷ shares; it is not the stock price.
Financial health
forensic scores · FY2025- Altman Z″ (distress)
- 10.01safe
- Accruals / assets
- −19.0%clean
- Beneish M-Score
- -1.02elevated
- Piotroski F-Score
- 5/9mixed
Altman Z″is a textbook bankruptcy-distress score from book values only (>2.6 safe · 1.1–2.6 grey · <1.1 distress). Accruals = (net income − operating cash flow) ÷ assets; persistently high accruals are an earnings-quality red flag. Beneish M-Scoreis an eight-ratio screen comparing this year with last (M > −1.78 = elevated manipulation-risk screen, not proof). Piotroski F-Scorecounts how many of nine fundamental-health checks pass (shown as passed / applicable; we use operating margin and total liabilities as documented proxies where the exact input isn't XBRL-tagged). Computed from SEC filings — descriptive factors, not advice or a forecast.
Quality score
EDS ScoreOur own multi-factor score from free SEC data — profitability, growth, financial strength, earnings quality, and event/ownership catalysts. No market price and no licensed model: each axis is the share of source-backed checks it passes. Descriptive factors, not advice or a forecast.
Signs
● 2 warning● 5 good- Revenue declined year-over-year
- Beneish M-Score elevated — earnings-manipulation screen flag
- Operating margin is positive
- Conservative leverage (liabilities < 50% of assets)
- Positive operating cash flow
- Clean earnings (low accruals)
- Altman Z″ in the safe zone
Derived from the company's own SEC figures (fundamentals, forensic scores, filing discipline) — descriptive factors, not advice or a forecast.
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Vanguard Capital Management LlcPassive (13G)Apr 30, 2026
- Vanguard Portfolio Management LlcPassive (13G)Apr 29, 2026
- Vanguard Group IncPassive (13G)Mar 27, 2026
- Fmr LlcPassive (13G)Feb 5, 2026
- Blackrock, Inc.Passive (13G)Jan 8, 2026
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Insider transactions
SEC Form 4 · most recent| Insider | Date | Type | Shares | Price |
|---|---|---|---|---|
| Tseng SariaOfficer — EVP & General Counsel | May 27, 2026 | Sell | 7,565 | $1700.00 |
| Dean Robert W IiOfficer — Interim CFO | May 26, 2026 | Sell | 22 | $1649.56 |
| Zhou JeffDirector | May 26, 2026 | Sell | 486 | $1680.00 |
| Tseng SariaOfficer — EVP & General Counsel | May 22, 2026 | Gift | 200 | $0.00 |
| Hsing MichaelOfficer — CEO | May 18, 2026 | Sell | 3,424 | $1462.61 |
| Dean Robert W IiOfficer — Interim CFO | May 18, 2026 | Sell | 4 | $1563.28 |
| Sciammas MauriceOfficer — EVP, WW Sales & Marketing | May 15, 2026 | Sell | 3,741 | $1550.36 |
| Sciammas MauriceOfficer — EVP, WW Sales & Marketing | May 13, 2026 | Gift | 1,563 | $0.00 |
| Dean Robert W IiOfficer — Interim CFO | May 13, 2026 | J | 2,156 | $0.00 |
| Elmiger Eugen JDirector | May 6, 2026 | Sell | 320 | $1559.88 |
| Xiao DemingOfficer — EVP, Global Operations | May 6, 2026 | Sell | 3,329 | $1648.38 |
| Wynne EileenDirector | May 6, 2026 | Sell | 335 | $1582.68 |
Headline trade per Form 4 (officers, directors, 10%+ owners). Buy/sell read from the filing's structured data — blank where a field isn't cleanly tagged.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 2.0M | 3.1 | +14.8% |
| Apr 30, 2026 | 1.7M | 2.8 | -5.7% |
| Apr 15, 2026 | 1.8M | 3.4 | -8.1% |
| Mar 31, 2026 | 2.0M | 3.7 | -0.1% |
| Mar 13, 2026 | 2.0M | 3.5 | -3.2% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Material events
SEC Form 8-K · most recent- Results of operationsApr 30, 2026
- Prior financials not reliable (restatement)Feb 27, 2026
- Results of operations · Director / officer change · Other material eventFeb 5, 2026
- Other material eventDec 12, 2025
- Amended charter or bylawsNov 21, 2025
- Results of operationsOct 30, 2025
- Other material eventSep 11, 2025
- Results of operationsJul 31, 2025
Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.
Recent SEC filings
All filings ↗- 144Jun 1, 2026
- 4PRIMARY DOCUMENTMay 29, 2026
- SDFORM SDMay 29, 2026
- 4PRIMARY DOCUMENTMay 28, 2026
- 144May 28, 2026
- 4PRIMARY DOCUMENTMay 27, 2026
- 4PRIMARY DOCUMENTMay 27, 2026
- 144May 26, 2026
- 144May 26, 2026
- 144May 22, 2026
- 4PRIMARY DOCUMENTMay 20, 2026
- 4PRIMARY DOCUMENTMay 20, 2026
- 4PRIMARY DOCUMENTMay 19, 2026
- 144May 18, 2026
- 144May 18, 2026