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Stock-Based Compensation Plans (Tables)
 6 Months Ended
Oct. 02, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Stock-Based Compensation Expense
The following table summarizes stock-based compensation expense related to stock awards granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s Employee Stock Purchase Plan (ESPP):

Three Months EndedSix Months Ended
(In thousands)October 2, 2021September 26, 2020October 2, 2021September 26, 2020
Stock-based compensation included in:
Cost of revenues$3,797 $2,963 $7,407 $5,684 
Research and development42,273 36,110 83,735 66,479 
Selling, general and administrative23,650 19,366 46,187 36,659 
$69,720 $58,439 $137,329 $108,822 
Summary of Restricted Stock Unit Activity
A summary of the Company’s RSU activity and related information is as follows:
 
 RSUs Outstanding
(Shares in thousands)Number of SharesWeighted-Average Grant-Date Fair Value Per Share
March 28, 20206,780 $80.53 
Granted3,885 $106.36 
Vested(2,558)$71.07 
Cancelled(680)$85.26 
April 3, 20217,427 $96.45 
Granted2,507 $136.18 
Vested(2,355)$83.29 
Cancelled(209)$106.66 
October 2, 20217,370 $113.54 
Schedule of RSU Valuation Assumptions The per share weighted-average fair value of RSUs granted during the second quarter of fiscal 2022 was $135.77, ($95.59 for the second quarter of fiscal 2021), which were calculated based on estimates at the date of grant using the following weighted-average assumptions: 
Three Months EndedSix Months Ended
October 2, 2021September 26, 2020October 2, 2021September 26, 2020
Risk-free interest rate0.6 %0.3 %0.6 %0.3 %
Dividend yield— %1.5 %— %1.5 %
Schedule Employee Stock Purchase Plan Valuation Assumptions The fair values of stock purchase plan rights granted in the second quarter of fiscal 2022 and 2021 were estimated using the Black-Scholes option pricing model at the date of grant using the following assumptions:
20222021
Expected life of options (years)1.251.25
Expected stock price volatility0.400.38
Risk-free interest rate0.1 %0.1 %
Dividend yield— %1.4 %