Monolithic Powervs.ON Semiconductor
MPWR vs ON · both in Chips & accelerators, part of the AI & digital infrastructure value chain: Designs and builds the processors, accelerators and memory that train and run AI.
Monolithic Power is about 2.2× larger than ON Semiconductor by market cap; ON Semiconductor trades at the lower P/E (50.0 vs 87.1); year to date, Monolithic Power leads (+57.3% vs +52.4%).
Side by side
| MPWR | ON | |
|---|---|---|
| Market cap | $70.1B | $31.5B |
| Price | $1,369.80 | $79.41 |
| Today | −3.9% | −3.8% |
| Return YTD | +57.3% | +52.4% |
| Return 1Y | +50.8% | +71.3% |
| Since July 2, 2026 | +6.3% | −12.9% |
| P/E | 87.1 | 50.0 |
| P/S | 21.4 | 5.1 |
| P/B | 18.0 | 4.4 |
Data as of 2026-10-08 · updates daily after U.S. close
Since July 2, 2026: the change in the closing price from the first session with a close for both companies. Sectivia records these closes itself, starting June 26, 2026.
The two companies
Monolithic PowerMPWR
Everything here is power delivery: the chips and modules that feed processors in AI server racks, with cars and industrial equipment taking the same parts.
Full MPWR profile →ON SemiconductorON
Electric cars and factory automation are the end markets for its silicon carbide power semiconductors and image sensors.
Full ON profile →More MPWR & ON comparisons
Other head-to-heads in the Chips & accelerators segment.