MPWR

Monolithic Power Systems, Inc.
NasdaqGSUSDEQUITY Technology DELAYED
Last price
1,468.03
▼ 11.86 (0.80%)
MARKET · —

Price

1D — H — L — Range — Vol —
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
1,449.99
Prev close
1,479.89
Day high
1,491.64
Day low
1,459.17
Volume
375.06K
Market cap
$72.42B
P/E (TTM)
90.02
52W range
833.18 – 1,714.09

Day trading desk

Current session · delayed
Gap from prior close
-2.02%
Prior close 1,479.89
VWAP
1,476.88
-0.60% from price
Relative volume
0.78×
Normal
Session range
3.45%
1,449.99 – 1,500.00
Position in range
36%
Mid range
ATR (14D)
54.78
3.73% of price
Prior day high
1,482.97
PDH
Prior day low
1,432.38
PDL
Bid / ask spread
—
Quote not published
Session volume
580.56K
Avg 745.22K

VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.

Trailing performance

Price return · vs SPY
Returnvs SPY
1W
+8.68% +6.7%
1M
+20.41% +19.3%
3M
+12.02% +7.5%
6M
+23.71% +5.5%
YTD
+62.59% +48.3%
1Y
+60.39% +44.0%
3Y
+218.98% +136.7%
5Y
— —

Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.

Unusual options activity

Account required
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
Free account required

Contracts trading at or above their open interest, ranked by notional and where the print landed.

Free account

5 more panels on MPWR open with an account.

Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.

Insider net activity

6m · Form 4 rollup
Net shares
-88.67K
Net selling
Buy transactions
6
42.59K shares
Sell transactions
24
131.27K shares
Net transactions
+30
Buys less sells
Sell : buy shares
3.1 : 1
Mixed
Insider-held shares
1.76M
Total on file
Bought 42.59KSold 131.27K

Insider transactions

Account required
DateInsiderAction SharesValueHeld
Sep 28, 26
HSING MICHAEL R
Chief Executive Officer
SELL 30.00K $40.35M Direct
Aug 31, 26
TSENG SARIA H
General Counsel
STOCK 2.00K $0 Direct
Aug 24, 26
CHANG KUO WEI HERBERT
Director
SELL 50 $64.08K Direct
Aug 24, 26
DEAN ROBERT W II
Chief Financial Officer
SELL 32 $41.53K Direct
Aug 17, 26
DEAN ROBERT W II
Chief Financial Officer
SELL 6 $8.48K Direct
Aug 11, 26
CHANG KUO WEI HERBERT
Director
SELL 50 $71.00K Direct
Aug 5, 26
DEAN ROBERT W II
Chief Financial Officer
SELL 105 $141.15K Direct
Aug 4, 26
SCIAMMAS MAURICE
Officer
STOCK 25.00K $0 Direct
Aug 3, 26
SCIAMMAS MAURICE
Officer
SELL 30 $40.32K Indirect
Jul 24, 26
DEAN ROBERT W II
Chief Financial Officer
STOCK 1.36K $0 Direct
Jul 15, 26
SCIAMMAS MAURICE
Officer
SELL 15.00K $20.25M Direct
Jul 1, 26
SCIAMMAS MAURICE
Officer
SELL 30 $40.55K Indirect
Jun 1, 26
SCIAMMAS MAURICE
Officer
SELL 30 $46.02K Indirect
May 29, 26
SCIAMMAS MAURICE
Officer
STOCK 12.47K $0 Indirect
What this is, and what it is not

These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.

A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.

This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.

Free account required

Officer and director trades in their own stock, straight from Form 4 filings.

Insider holders

10 reporting
NameRelationShares heldLatest
BLEGEN THEODORE BERNHARD
Chief Financial Officer 93.02K Sale
DEAN ROBERT W II
Chief Financial Officer 7.15K Sale
ELMIGER EUGEN J
Director 5.40K Sale
HSING MICHAEL R
Chief Executive Officer 964.13K Sale
LEE VICTOR K
Director 27.76K Sale
MARTINEZ CARINTIA
Director 1.07K Stock Award(Grant)
SCIAMMAS MAURICE
Officer 234.44K Stock Gift
TSENG SARIA H
General Counsel 145.22K Stock Gift
XIAO DEMING
Officer 230.75K Sale
ZHOU JEFFREY
Director 3.80K Sale

Fundamentals

TTM · reported
Market cap$72.42B
Enterprise value$71.03B
Revenue (TTM)$3.27B
Gross profit$1.81B
EBITDA$1.00B
Net income$801.95M
EPS (TTM)$16.37
Free cash flow$444.32M
Total cash$1.41B
Total debt$18.93M
Book value / share$79.27
Shares outstanding49.14M
Float47.39M
Short % of float5.22%
Dividend yield0.54%
Beta (5Y)1.68

Valuation & profitability ratios

Account required
Trailing P/E90.02
Forward P/E42.14
PEG ratio1.11
Price / sales—
Price / book18.59
EV / revenue21.70
EV / EBITDA71.01
Gross margin55.20%
Operating margin30.99%
Profit margin24.50%
Return on equity21.98%
Return on assets13.57%
Debt / equity0.49
Current ratio4.98
Free account required

Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.

Financial statements

As reported · 4 years · 6 quarters
Blank means not reported, not zero
Line item2025202420232022YoY
Total revenue $2.79B$2.21B$1.82B$1.79B +26.4%
Operating revenue $2.79B$2.21B$1.82B$1.79B +26.4%
Cost of revenue $1.25B$986.23M$799.95M$745.60M +26.8%
Gross profit $1.54B$1.22B$1.02B$1.05B +26.1%
Research & development $382.26M$324.75M$263.64M$240.17M +17.7%
Selling, general & admin $428.84M$356.76M$275.74M$281.60M +20.2%
Total operating expense $811.11M$681.51M$539.38M$521.77M +19.0%
Operating income $728.64M$539.36M$481.74M$526.78M +35.1%
Net interest income $29.15M$27.09M$23.36M$14.37M +7.6%
Pre-tax income $766.22M$572.91M$505.84M$524.94M +33.7%
Tax provision $144.73M-$1.02B$78.47M$87.27M +114.2%
Net income $621.48M$1.59B$427.37M$437.67M -61.0%
Net income to common $621.48M$1.59B$427.37M$437.67M -61.0%
Basic EPS 12.8232.768.989.37 -60.9%
Diluted EPS 12.7532.608.769.05 -60.9%
EBIT $728.64M$539.36M$481.74M$526.78M +35.1%
EBITDA $781.15M$575.79M$521.90M$563.90M +35.7%
Basic shares 48.03M48.60M47.61M46.73M -1.2%
Diluted shares 48.31M48.84M48.77M48.36M -1.1%

Options analytics

Account required
Put / call volume
0.65
Call-heavy session
Put / call open interest
—
Positioning, not flow
Max pain
860.00
-41.6% from spot
ATM implied vol
0.8%
Nearest strike to spot
Skew (10% OTM)
0.0%
Calls bid over puts
Call volume
420
Contracts, this expiry
Put volume
274
Contracts, this expiry
Heaviest call OI
870.00
0 contracts
Heaviest put OI
860.00
0 contracts

Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.

Free account required

Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.

Earnings

History & consensus estimates
Reported vs expected · EPS
QuarterEst.ActualSurprise
Jun 2026 5.886.50 +10.5%
Mar 2026 4.905.10 +4.1%
Dec 2025 4.744.79 +1.1%
Sep 2025 4.644.73 +2.0%
Forward consensus
PeriodEPSAnalystsRevenueGrowth
Current quarter 7.71 14 $1.15B +56.4%
Next quarter 8.09 14 $1.21B +60.9%
Current year 27.46 15 $4.15B +48.8%
Next year 34.98 15 $5.30B +27.5%

Analyst targets & ownership

Account required
Mean target$1,839.80
High target$2,100.00
Low target$1,575.00
Implied upside25.32%
Analyst count15
ConsensusSTRONG BUY
Strong buy / Buy2 / 13
Hold2
Sell / Strong sell0 / 0
Held by insiders3.59%
Held by institutions100.59%
Institutions holding1.77K
Free account required

Price targets, consensus spread, insider and institutional ownership.

Moving averages & technicals

Computed from 2Y daily closes
SMA 10
1,386.71
+5.86% from price
SMA 20
1,298.52
+13.49% from price
SMA 50
1,310.15
+12.48% from price
SMA 100
1,386.41
+5.89% from price
SMA 200
1,288.76
+14.35% from price
EMA 12
1,376.46
+6.65% from price
EMA 26
1,331.27
+10.27% from price
EMA 50
1,326.78
+10.65% from price
RSI (14)
68.3
Neutral
MACD (12,26,9)
45.19
Hist 24.34
ATR (14)
54.78
3.72% of price
Realised vol 30D
47.0%
Annualised
Bollinger upper
1,514.17
20, 2σ
Bollinger lower
1,082.87
20, 2σ
50 / 200 cross
Golden
1,310.15 vs 1,288.76
Trend bias
Above 200
+14.35%

Options chain

Account required
Expiry
Spot 1,468.03
Calls
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Puts
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Free account required

Every listed expiry, both sides of the book, with volume, open interest and implied volatility.

Risk profile

Daily returns · 1Y window
Beta vs SPY
2.52
More volatile than market
Correlation to SPY
0.60
Loosely linked
Realised vol 30D
47.0%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-32.4%
Peak to trough
Max drawdown 5Y
-51.9%
Peak to trough
ATR 14
54.78
3.72% of price
Beta (reported)
1.68
5Y monthly, from filing

Short interest

Semi-monthly exchange report · lags by ~2 weeks
Shares short
1.91M
Prior 1.84M
Change vs prior
+3.7%
Shorts adding
% of float
5.22%
Normal
% of shares out
3.88%
Against total outstanding
Days to cover
3.1
Liquid
Float
47.39M
Freely tradeable shares

Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.

Rating changes

248 on file
DateFirm ActionFromTo
Sep 3, 26 StoneX INITIATED — Buy
Jul 31, 26 Wells Fargo MAINTAINED Overweight Overweight
Jul 31, 26 Truist Securities MAINTAINED Buy Buy
Jul 31, 26 Keybanc MAINTAINED Overweight Overweight
Jul 31, 26 Rosenblatt MAINTAINED Neutral Neutral
Jul 31, 26 Needham MAINTAINED Buy Buy
Jul 20, 26 Wells Fargo MAINTAINED Overweight Overweight
May 1, 26 TD Cowen MAINTAINED Buy Buy
May 1, 26 Wells Fargo MAINTAINED Overweight Overweight
May 1, 26 Keybanc MAINTAINED Overweight Overweight
May 1, 26 Rosenblatt MAINTAINED Neutral Neutral
May 1, 26 Needham MAINTAINED Buy Buy

Dividends & splits

Declared · from the issuer
Forward rate$8.00 / yr
Forward yield0.54%
5-year avg yield0.61%
Payout ratio43.31%
Ex-dividend dateSep 30, 2026
Next pay dateOct 15, 2026
Last split—
Split date—

PRIVATE STRATEGY · BY QUALIFICATION

The same data. A different seat.

The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.