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Daily valuation snapshot
Power Integrations Inc: source evidence dated 2026-10-09.
- Daily close (USD)
- $49.12
- Market capitalization (USD)
- $2,744,496,397.76
- Price / earnings (TTM)
- 109.49
- Price / book
- 4.03
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Company overview
Power Integrations, Inc. designs, develops, manufactures, and markets analog and mixed-signal integrated circuits (ICs), and other electronic components and circuitry used in high-voltage power conversion. The company provides a range of alternating current to direct current power conversion products that address power supply up to approximately 500 watts of output for consumer appliances, utility meters, LCD monitors, tablets, smartphones, computers, TVs, and consumer and industrial applications, as well as LED lightings; and power conversion in high-power applications comprising industrial motors, solar and wind-power systems, electric locomotives, and high-voltage DC transmission systems. It also offers InnoSwitch IC for electric vehicles; high-voltage gate-driver products used to operate high-voltage switches, such as insulated-gate bipolar transistors and silicon-carbide MOSFETs under the SCALE and SCALE-2 product-family names; and SCALE-iDriver for use in powertrain and charging applications for electric vehicles. In addition, the company provides motor-driver ICs for use in refrigerator compressors, ceiling fans, air purifiers, and circulation pumps, as well as pumps and fans used in appliances, such as dishwashers, laundry machines, and boilers. It serves communications, computer, consumer, and industrial markets. The company sells its products to original equipment manufacturers and merchant power supply manufacturers through direct sales staff, as well as a network of independent sales representatives and distributors in the Americas, Europe, the Middle East, Africa, and the Asia-Pacific. Power Integrations, Inc. was incorporated in 1988 and is headquartered in San Jose, California.
Daily valuation snapshot
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These values come from the daily market snapshot dated 2026-10-09. TTM means trailing twelve months. Use the market date when comparing POWI with another company.
| Daily close (USD) | $49.12 |
| Market capitalization (USD) | $2,744,496,397.76 |
| Price / earnings (TTM) | 109.49 |
| Price / book | 4.03 |
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Read POWI's valuation metrics
Company size
Power Integrations Inc's recorded market capitalization is $2,744,496,397.76. It measures the market value of the company's equity, rather than its revenue or cash balance.
Price relative to earnings
POWI's recorded P/E is 109.49: about $109.49 of share price for each $1 of trailing annual earnings per share. Compare that multiple with earnings growth and companies in the same business.
Price relative to book equity
POWI's recorded price-to-book ratio is 4.03. That compares its market equity value with recorded book equity. Examine its business and balance sheet to understand why those values differ.
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