$1,347.22▼ −8.77 · −0.7%from $1,355.99 the session before · Sep 30, 2026 close · end of day
Open
$1,353.77
High
$1,361.44
Low
$1,324.96
Day's range
$362.7% of the previous close
VWAP
$1,343.33close +0.29% from it
Volume, shares
465K0.63× the 20-session average
Traded, $
$625.0M
Trades
33.9K14 shares per trade
Previous close
$1,355.99−8.77 to the close
Market cap
$66.21Bat the close of Sep 30
Day range61% of the way up
$1,324.96$1,361.44
52-week range49% of the way up
$996.01 Mar 30$1,714.09 May 26
−21% from the high · +35% from the low
The desk read · Sep 28expiry Oct 16 · 18 days
balanced
options read
calls 49% · puts 51% of OI
1.04
puts per call, by OI
Oct 16 expiry 0.62
$1,220.00
max pain
−9.4% from the close
$1,350.00
most call OI
277 contracts · +0.21% from the close
▲ +1.4%
option OI on the day
+225 contracts · 15.8K open
Balanced into a 18-day expiry: 1.04 puts per call by open interest, option OI +1.4% on the day, the most call OI sits at $1,350.00, the most put OI at $1,100.00, max pain $1,220.00.
Options
Sep 28 open interest · 10 expiries listed
MPWR options carry 15.8K contracts of open interest across 10 expiries, 23% of it in the Oct 16 contract, with 1.04 puts per call.
Open interest by expirythe next 8 of 10 expiries · share of all open interest
Option open interest by expiry, the next 8 expiries
Expiry
Call OI · on the day
Put OI · on the day
Puts per call
Share of OI %
Strikes
Oct 1618 days
2.25K+73
1.4K+27
0.62
23
74
Nov 2053 days
1.66K+6
1.5K+9
0.91
20
133
Dec 1881 days
456+2
658+4
1.44
7.0
145
Jan 15109 days
1.58K+67
1.96K+2
1.24
22
127
Feb 19144 days
4680
5050
1.08
6.2
132
Mar 19172 days
171+4
165+24
0.96
2.1
90
May 21235 days
6000
9450
1.57
9.8
132
Jun 17262 days
00
1+1
—
0.01
91
77% of open interest sits beyond the Oct 16 contract · 74 strikes listed for it · 15.8K contracts open in all
Monthly contractOct 16 expiry · 18 days
The Oct 16 contract holds 2.25K calls and 1.4K puts, the most call OI at $1,350.00 and the most put OI at $1,100.00; max pain $1,220.00, −9.4% from the close.
Call OI, contracts
2.25K+73 on the day
Put OI, contracts
1.4K+27 on the day
Puts per call, by OI
0.62all expiries 1.04
Max pain
$1,220.00−9.4% from the close
Strikes listed
74for this expiry
Open interest by strike, contractstop three strikes each side
Calls
Strike
Puts
198
$1,400.00
277
$1,350.00
263
$1,200.00
$1,160.00
126
$1,100.00
170
$1,060.00
153
Open interest added on the day, contractsthree largest additions each side
Calls
Strike
Puts
+20
$1,440.00
+23
$1,390.00
+12
$1,340.00
+8
$1,080.00
+7
$1,020.00
+7
Close $ · S&P 500 rebased to the first close126 sessions to Sep 30 · axis fixed at 4 × ATR-14 around the last close · hover or tap a session and the read beside the chart follows it
consolidated · latest filed Aug 5, 2026 · SEC filings
Revenue $980.6M, +48% on a year earlier; profit $257.3M, +91% in the Jun 2026 quarter, consolidated.
Last 8 quarters, consolidatedUS dollars as filed · year on year against the same quarter a year earlier · market: close on the first session after the filing against the last close before it, S&P 500 over the same session
Quarterly results of MPWR on the consolidated basis with the market's move on the first session after each filing
Quarter
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
Market on the day
Jun 2026filed Aug 5
$980.6M
▲ +48%
$257.3M
▲ +91%
5.22
▲ +1.0%S&P 500 −0.2% · +1.2 pp
Mar 2026filed May 4
$804.2M
▲ +26%
$193.2M
▲ +43%
3.92
▲ +0.9%S&P 500 +0.8% · +0.1 pp
Dec 2025filed Feb 27
$751.2M
▲ +21%
$171.7M
▼ −88%
3.50
—not reached
Sep 2025filed Feb 27
$737.2M
▲ +19%
$179.8M
▲ +24%
3.74
—not reached
Jun 2025filed Aug 5
$664.6M
▲ +31%
$135.0M
▲ +35%
2.81
▲ +1.0%S&P 500 −0.2% · +1.2 pp
Mar 2025filed May 4
$637.6M
▲ +39%
$135.1M
▲ +46%
2.81
▲ +0.9%S&P 500 +0.8% · +0.1 pp
Dec 2024filed Mar 3
$621.7M
▲ +37%
$1.45B
▲ +1,400%
29.70
—not reached
Sep 2024filed Nov 5
$620.1M
▲ +31%
$144.4M
▲ +19%
2.95
—not reached
By fiscal yearfiscal years as filed in the 10-K · named by the year the fiscal year ends
Financial-year results of MPWR on the consolidated basis, summed from the quarters filed
Year
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
FY25to Dec 2025
$2.79B
▲ +26%
$621.5M
▼ −61%
12.86
FY24to Dec 2024
$2.21B
▲ +21%
$1.59B
▲ +270%
32.60
FY23to Dec 2023
$1.82B
▲ +1.5%
$427.4M
▼ −2.3%
8.76
FY22to Dec 2022
$1.79B
▲ +49%
$437.7M
▲ +81%
9.05
FY21to Dec 2021
$1.21B
▲ +43%
$242.0M
▲ +47%
5.05
Fundamentals
consolidated · filings to Jun 2026 · close $1,347.22 on Sep 30
MPWR trades at 82 times trailing earnings against 25 for its industry, 17 times book value, revenue +29% over twelve months, a 0.45% dividend yield, market cap $66.21B.
Valuation
Market cap
$66.21Bon Sep 30
Price to earnings
82consolidated · four quarters to Jun 2026 · industry 25
Trailing EPS
$16.38diluted · consolidated · four quarters to Jun 2026
Price to book
17consolidated · balance sheet to Jun 2026
Book value a share
$79.27consolidated · balance sheet to Jun 2026
Debt to equity
—
Return on equity
23%trailing profit over average equity · consolidated
Dividend yield
0.45%$6.00 a share in 365 days
Price to sales
20market cap over revenue, four quarters to Jun 2026
Shares outstanding
49.1Mon Sep 30
Growthsums of the four quarters filed to Jun 2026 · growth against the four quarters before them · consolidated
Revenue, trailing 12 months
$3.27Bfour quarters to Jun 2026
Revenue growth, 12 months
▲ +29%against the twelve months before
Revenue 3-year CAGR
▲ +21%trailing twelve months against the twelve months 3 years earlier · consolidated
Profit, trailing 12 months
$801.9Mfour quarters to Jun 2026
Profit growth, 12 months
▼ −57%against the twelve months before
Profit 3-year CAGR
▲ +21%trailing twelve months against the twelve months 3 years earlier · consolidated
PeersSemiconductors & Related Devices · the ten largest by market cap · industry P/E 25, market caps over trailing profit of 3 stocks
Stocks in the industry Semiconductors & Related Devices with market cap, price to earnings and price to book
13F managers hold 190% of shares, BlackRock, Inc. the largest at 23%, FMR LLC 21% and VANGUARD CAPITAL MANAGEMENT LLC 13%, as filed for the quarter to Jun 2026.
22.8%21.1%12.7%129.8%
BlackRock, Inc. 22.8%
FMR LLC 21.1%
VANGUARD CAPITAL MANAGEMENT LLC 12.7%
Other 13F managers 129.8%
Held by 13F managers
190%of shares outstanding
Shares held
91.6M+2.9% on Mar 2026 among managers filing both
Managers holding
1,1741,062 a quarter earlier
Largest holder
23%BlackRock, Inc.
Largest 10 holderspercent of shares outstanding · change in shares against the previous quarter
Largest 13F holders of MPWR
Manager
Shares
Of outstanding
Value
Change on quarter
BlackRock, Inc.
11.2M
23%
$15.45B
−965K
FMR LLC
10.4M
21%
$14.31B
+1.55M
VANGUARD CAPITAL MANAGEMENT LLC
6.25M
13%
$8.64B
+86.6K
VANGUARD PORTFOLIO MANAGEMENT LLC
5.01M
10%
$6.93B
−23.3K
Invesco Ltd.
4.69M
9.5%
$6.48B
+1.72M
STATE STREET CORP
4.56M
9.3%
$6.32B
+187K
GEODE CAPITAL MANAGEMENT, LLC
2.39M
4.9%
$3.29B
−474K
FRANKLIN RESOURCES INC
1.62M
3.3%
$2.24B
−233K
GOLDMAN SACHS GROUP INC
1.56M
3.2%
$2.16B
+425K
NORGES BANK
1.5M
3.1%
$2.08B
—
Insider tradesSEC Forms 3, 4 and 5 · the latest 10
No open-market insider buying or selling in the last 90 days.
MPWR insider trades
Insider
Trade
Shares
Price
Held after
Sciammas MauriceOfficer
sold · Jun 1, 2026
30
$1,533.95
1,179
Sciammas MauriceOfficer
gift · May 29, 2026
12,472
$0.00
12,625
Tseng SariaOfficer
sold · May 27, 2026
7,565
$1,700.00
144,218
DEAN ROBERT W IIOfficer
sold · May 26, 2026
22
$1,649.56
5,878
Tseng SariaOfficer
sold · May 22, 2026
5,000
$1,586.43
151,783
Tseng SariaOfficer
gift · May 22, 2026
200
$0.00
156,783
Zhou JeffDirector
sold · May 26, 2026
486
$1,680.00
3,800
DEAN ROBERT W IIOfficer
sold · May 18, 2026
4
$1,563.28
5,900
Hsing MichaelDirector,Officer
sold · May 18, 2026
3,424
$1,462.61
884,839
Hsing MichaelDirector,Officer
sold · May 18, 2026
5,819
$1,467.62
879,020
Corporate actions
exchange records
Nothing upcoming on record; the last was a dividend of $2.00 a share, ex-date Sep 30, 2026.
Actionsex-dates · upcoming first, then the last eight · dividends in dollars a share, splits as ratios
Corporate actions of MPWR, upcoming first, then the most recent
Ex-date
Action
Amount or ratio
Record date
recent
Sep 30, 2026
dividend
$2.00
—
Jun 30, 2026
dividend
$2.00
—
Mar 31, 2026
dividend
$2.00
—
Calendardividends by ex-date
Dividends in 365 days
$6.00a share · ex-dates inside the year
Last dividend
$2.00ex-date Sep 30, 2026
Price history
131 sessions on record · to Sep 30 · end of day
MPWR is +9.9% over 20 sessions against the S&P 500's +0.1%, 21% below its 52-week high, realised volatility 50% annualised.
Returns against S&P 500longest window first · S&P 500 over the same sessions
Returns of the stock and S&P 500 over six windows, longest first
Window
From $
MPWR %
S&P 500 %
Difference pp
120 sessionssince Apr 9
$1,334.15
▲ +0.98%
▲ +12%
−11
60 sessionssince Jul 7
$1,272.76
▲ +5.8%
▲ +2.0%
+3.8
20 sessionssince Sep 1
$1,225.97
▲ +9.9%
▲ +0.11%
+9.8
5 sessionssince Sep 23
$1,355.49
▼ −0.61%
▼ −0.67%
+0.06
1 sessionsince Sep 29
$1,356.03
▼ −0.65%
▼ −0.21%
−0.44
Averages of the closeclose against each average
5-session average
$1,351.48close −0.32% from it
20-session average
$1,254.58close +7.4% from it
50-session average
$1,304.43close +3.3% from it
Range and volumetrue range over 14 sessions · high to low over 20 · volume against the 20-session average
Average true range, 14
$554.1% of the close
Average day's range, 20
$483.5% of the close
Volume against 20 sessions
0.63×465K vs 719K average
Volatility and co-movement with S&P 500annualised from daily returns
Realised volatility, 20
50%≈ ±3.2% a session · moved more than that on 5 of 20
Realised volatility, 60
52%≈ ±3.3% a session · moved more than that on 20 of 60
Beta to S&P 500, 60
1.51moved with S&P 500 on 33 of 60 sessions
Up and down sessionscloses above and below the previous close
Semiconductors & Related Devices · SEC standard industrial classification
SEC CIK
1280452
Sessions on record
131
Price source
End of day · delayed
Computed
2 Oct, 01:04 am IST
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