PE Ratio Chart

View PE Ratio for ONTO.
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285.00
270.00
255.00
240.00
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Historical PE Ratio Data

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Date Value
August 24, 2026 105.88
August 21, 2026 109.78
August 20, 2026 111.84
August 19, 2026 112.09
August 18, 2026 118.05
August 17, 2026 131.42
August 14, 2026 124.14
August 13, 2026 126.43
August 12, 2026 126.25
August 11, 2026 119.68
August 10, 2026 109.04
August 07, 2026 115.38
August 06, 2026 100.56
August 05, 2026 103.29
August 04, 2026 107.63
August 03, 2026 100.48
July 31, 2026 96.77
July 30, 2026 93.76
July 29, 2026 81.70
July 28, 2026 90.53
July 27, 2026 98.18
July 24, 2026 102.03
July 23, 2026 109.01
July 22, 2026 110.50
July 21, 2026 111.92
Date Value
July 20, 2026 104.24
July 17, 2026 104.73
July 16, 2026 105.39
July 15, 2026 114.05
July 14, 2026 119.51
July 13, 2026 113.85
July 10, 2026 120.30
July 09, 2026 118.65
July 08, 2026 109.08
July 07, 2026 104.76
July 06, 2026 113.72
July 02, 2026 115.11
July 01, 2026 131.50
June 30, 2026 141.64
June 29, 2026 163.15
June 26, 2026 150.37
June 25, 2026 159.81
June 24, 2026 149.59
June 23, 2026 146.64
June 22, 2026 161.49
June 18, 2026 154.94
June 17, 2026 148.05
June 16, 2026 146.77
June 15, 2026 155.96
June 12, 2026 150.36

Price to Earnings Ratio (PE Ratio) Definition

The Price to Earnings Ratio (PE Ratio) is calculated by taking the stock price / EPS Diluted (TTM). This metric is considered a valuation metric that confirms whether the earnings of a company justifies the stock price. There isn't necesarily an optimum PE ratio, since different industries will have different ranges of PE Ratios. Because of this, PE Ratio is great to evaluate from a relative standpoint with other similar companies.

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PE Ratio Range, Past 5 Years

View PE Ratio Range, Past 5 Years
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PE Ratio Benchmarks

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