13FPulse
MP

MPWR MONOLITHIC POWER SYSTEMS INC

2026Q2 · CUSIP 609839105 · Analog & Power · Sector: Semiconductors

Piling in

Net holder growth ranks near the top of the market

Funds that own it
1,214
Institutions that reported holding it to the SEC
Net increase in holders
+97
Last quarter 1,117 → now 1,214
How unusual is that
Top 5%
Stronger buying than 98% of US stocks
What the filings say, in one paragraph

1,214 funds held MPWR at the end of 2026Q2, up 97 from the quarter before. That is stronger buying than 98.1% of US stocks — among the most piled-into names this quarter. On the business itself, revenue over the last 12 months was $3.3B(YoY +28.7%), the P/E is 76.7x, return on equity is 20.6%. MPWR has had 25 buying rushes in its history, and the price moved +5.7% on average over the six months after (that is the raw price move, not how much it beat the market by). It sits in the Semiconductors sector, tagged Analog & Power.

How many funds owned it, quarter by quarter

Bars = net change in institutional holders, positive (green) or negative (red). Line = total institutional holders.

2013Q3: holders=132 2013Q4: holders=141 2014Q1: holders=147 2014Q2: holders=156 2014Q3: holders=173 2014Q4: holders=174 2015Q1: holders=177 2015Q2: holders=180 2015Q3: holders=178 2015Q4: holders=193 2016Q1: holders=197 2016Q2: holders=211 2016Q3: holders=237 2016Q4: holders=261 2017Q1: holders=287 2017Q2: holders=283 2017Q3: holders=291 2017Q4: holders=318 2018Q1: holders=327 2018Q2: holders=345 2018Q3: holders=352 2018Q4: holders=338 2019Q1: holders=347 2019Q2: holders=345 2019Q3: holders=352 2019Q4: holders=354 2020Q1: holders=349 2020Q2: holders=396 2020Q3: holders=432 2020Q4: holders=510 2021Q1: holders=524 2021Q2: holders=529 2021Q3: holders=574 2021Q4: holders=626 2022Q1: holders=610 2022Q2: holders=620 2022Q3: holders=629 2022Q4: holders=607 2023Q1: holders=667 2023Q2: holders=651 2023Q3: holders=655 2023Q4: holders=737 2024Q1: holders=806 2024Q2: holders=837 2024Q3: holders=881 2024Q4: holders=864 2025Q1: holders=858 2025Q2: holders=911 2025Q3: holders=979 2025Q4: holders=1063 2026Q1: holders=1117 2026Q2: holders=1214 -97 -48.5 +0 +48.5 +97 1186971275 13Q315Q116Q318Q119Q321Q122Q324Q125Q326Q2 Net change in holders (bars) Total funds holding (line)

What happened after each past buying rush 25 times in its history

Quarter of the rush How unusual then Price, next 3 months Price, next 6 months
2026Q2 Top 5%
2026Q1 Top 5% -9.3%
2025Q4 Top 5% +1.6% +32.4%
2025Q3 Top 5% +6.6% +31.2%
2025Q2 Top 5% +9.6% +8.4%
2024Q3 Top 10% +7.6% +12.7%
2024Q2 Top 10% +0.6% -36.9%
2024Q1 Top 5% +15.5% +25.8%

These are the raw price moves, not how much it beat the market by. Compare them against the market over the same months — in a strong bull market almost everything is up.

Show all the numbers (large funds, value held, options…) ▾
Of them, large funds
346
Change in large funds
+45
Total value they hold
$65.2B
Funds buying for the first time
219
Funds that sold out entirely
122
Price change that quarter
-15.4%
Funds holding puts (bearish)
21
Funds holding calls (bullish)
20

These are for people who want to dig. Skip them if they do not mean anything to you — the three numbers above are enough.

8,697 institutions have filed for this quarter. 13F permits late filing and a small number arrive in the weeks after the deadline, so the holder counts and changes below may tick up.

Fundamentals

PE (TTM)
76.7
EPS (TTM)
$16.38
EPS YoY
-52.2%
Revenue (TTM)
$3.3B
Revenue YoY
+28.7%
Net margin
24.5%
ROE
20.6%
Debt ratio
16.9%
FCF (TTM)
$586M
Dividend (TTM)
$7.12
Quarterly Revenue & EPS
2021-09-30: EPS 1.44 2021-12-31: EPS 1.50 2022-03-31: EPS 1.65 2022-06-30: EPS 2.37 2022-09-30: EPS 2.57 2022-12-31: EPS 2.46 2023-03-31: EPS 2.26 2023-06-30: EPS 2.04 2023-09-30: EPS 2.48 2023-12-31: EPS 1.98 2024-03-31: EPS 1.89 2024-06-30: EPS 2.05 2024-09-30: EPS 2.95 2024-12-31: EPS 25.71 2025-03-31: EPS 2.81 2025-06-30: EPS 2.81 2025-09-30: EPS 3.74 2025-12-31: EPS 3.50 2026-03-31: EPS 3.92 2026-06-30: EPS 5.22 0M 490M 981M $M 0.00 14.14 28.28 2016201720182019202020212022202320242025202606/26 Revenue EPS

Quarterly figures, revenue up to 10 years back; EPS split-adjusted, early quarters hidden when not calibrable

P/E (TTM) over time
4Y median 57 19 68 116 20222023202420252026

P/E = close around day 47 after quarter-end ÷ TTM EPS then; this is a consistent valuation date, not the company’s actual filing date; loss quarters hidden

Quarterly free cash flow
-25M103M232M 20162017201820192020202120222023202420252026
Latest quarter $179M (2026-03-31)

FCF = operating cash flow − capex, computed from SEC XBRL; banks/insurers have no standard cash-flow structure and are hidden

As of 2026-06-30 · SEC filings (XBRL)

Email me the next update

2026 Q3 holdings are due 2026-11-16. We will email you when the refreshed lists are live.