v3.25.1
Stock-Based Compensation (Tables)
6 Months Ended
Mar. 29, 2025
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense in Consolidated Statements of Operations
The following presents stock-based compensation expense in the Company’s Consolidated Statements of Income:

 Three Months EndedSix Months Ended
 March 29,
2025
March 30,
2024
March 29,
2025
March 30,
2024
Cost of revenues$3.3 $3.2 $6.8 $5.9 
Research and development2.5 3.0 5.0 6.2 
Selling and marketing4.0 3.6 7.7 6.9 
General and administrative18.6 16.0 39.0 35.5 
$28.4 $25.8 $58.5 $54.5 
Weighted-Average Assumptions Utilized to Value Stock Options
The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:

 Three Months EndedSix Months Ended
 March 29,
2025
March 30,
2024
March 29,
2025
March 30,
2024
Risk-free interest rate4.2 %4.4 %4.2 %4.4 %
Expected volatility32.5 %33.4 %32.5 %33.4 %
Expected life (in years)4.84.84.84.8
Dividend yield— — — — 
Weighted average fair value of options granted$22.06 $26.27 $26.30 $25.04