Stock-Based Compensation (Tables)

6 Months Ended

Jun. 29, 2025

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Estimated Fair Value of TSR Performance-Based Restricted Stock Unit Awards Assumptions

The grant date fair value was estimated using the Monte Carlo simulation model with the following assumptions:


		For the Six Months Ended
		June 29, 2025				June 30, 2024
Risk-free interest rate			4.1	%			3.9	%
Teradyne volatility-historical			41.7	%			42.4	%
NYSE Composite Index volatility-historical			14.7	%			15.6	%
Dividend yield			0.4	%			0.5	%

Fair Value of Stock Options Using Assumptions

The fair value of stock options was estimated using the Black-Scholes option-pricing model with the following assumptions:


		For the Six Months Ended
		June 29, 2025				June 30, 2024
Expected life (years)			4.0				4.0
Risk-free interest rate			4.2	%			4.0	%
Volatility-historical			43.9	%			46.3	%
Dividend yield			0.4	%			0.5	%