ON Semiconductorvs.Western Digital
ON vs WDC · 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.
Western Digital is about 4.4× larger than ON Semiconductor by market cap; Western Digital trades at the lower P/E (14.7 vs 50.0); year to date, Western Digital leads (+135.3% vs +52.4%).
Side by side
| ON | WDC | |
|---|---|---|
| Market cap | $31.5B | $139B |
| Price | $79.41 | $393.31 |
| Today | −3.8% | −3.0% |
| Return YTD | +52.4% | +135.3% |
| Return 1Y | +71.3% | +238.0% |
| Since June 26, 2026 | −12.4% | −32.9% |
| P/E | 50.0 | 14.7 |
| P/S | 5.1 | 10.7 |
| P/B | 4.4 | 15.7 |
Data as of 2026-10-08 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
The two companies
ON SemiconductorON
Electric cars and factory automation are the end markets for its silicon carbide power semiconductors and image sensors.
Full ON profile →Western DigitalWDC
Hard drives for data centres, where AI has pushed demand for cheap bulk capacity to records.
Full WDC profile →More ON & WDC comparisons
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