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Marketable Securities (Tables)
 9 Months Ended
Sep. 27, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Marketable Securities Classified as Available-for-sale Securities

Marketable securities classified as available-for-sale securities are summarized below:

 

 

 

Available-For-Sale Securities
as of September 27, 2025

 

 

 

Fair Value Level

 

Amortized Cost

 

 

Gross Unrealized
Gains

 

 

Gross Unrealized
Losses

 

 

Fair Value

 

U.S. Treasury securities

 

Level 2

 

$

3,300

 

 

$

51

 

 

$

—

 

 

$

3,351

 

Agency securities

 

Level 2

 

 

53,811

 

 

 

69

 

 

 

(255

)

 

 

53,625

 

Mortgage-backed securities

 

Level 2

 

 

94,262

 

 

 

485

 

 

 

(1,634

)

 

 

93,113

 

Corporate debt securities

 

Level 2

 

 

1,447,404

 

 

 

11,117

 

 

 

(7,348

)

 

 

1,451,173

 

Municipal securities

 

Level 2

 

 

243,631

 

 

 

619

 

 

 

(3,645

)

 

 

240,605

 

Other

 

Level 2

 

 

1,594

 

 

 

—

 

 

 

(52

)

 

 

1,542

 

Total

 

 

 

$

1,844,002

 

 

$

12,341

 

 

$

(12,934

)

 

$

1,843,409

 

 

 

 

Available-For-Sale Securities
as of December 28, 2024

 

 

 

Fair Value Level

 

Amortized Cost

 

 

Gross Unrealized
Gains

 

 

Gross Unrealized
Losses

 

 

Fair Value

 

U.S. Treasury securities

 

Level 2

 

$

4,930

 

 

$

8

 

 

$

—

 

 

$

4,938

 

Agency securities

 

Level 2

 

 

42,236

 

 

 

38

 

 

 

(477

)

 

 

41,797

 

Mortgage-backed securities

 

Level 2

 

 

43,599

 

 

 

—

 

 

 

(4,375

)

 

 

39,224

 

Corporate debt securities

 

Level 2

 

 

1,281,981

 

 

 

1,498

 

 

 

(23,837

)

 

 

1,259,642

 

Municipal securities

 

Level 2

 

 

281,295

 

 

 

21

 

 

 

(9,907

)

 

 

271,409

 

Other

 

Level 2

 

 

2,683

 

 

 

1

 

 

 

(93

)

 

 

2,591

 

Total

 

 

 

$

1,656,724

 

 

$

1,566

 

 

$

(38,689

)

 

$

1,619,601

 

 
Schedule of Gross Unrealized Losses and Fair Value by Major Security Type

The following tables display additional information regarding gross unrealized losses and fair value by major security type for available-for-sale securities in an unrealized loss position as of September 27, 2025 and December 28, 2024.

 

 

 

As of September 27, 2025

 

 

 

Less than 12 Consecutive Months

 

 

12 Consecutive Months or Longer

 

 

Total

 

 

 

Gross Unrealized Losses

 

 

Fair Value

 

 

Gross Unrealized Losses

 

 

Fair Value

 

 

Gross Unrealized Losses

 

 

Fair Value

 

Agency securities

 

$

(101

)

 

$

8,230

 

 

$

(154

)

 

$

6,846

 

 

$

(255

)

 

$

15,076

 

Mortgage-backed securities

 

 

(205

)

 

 

17,569

 

 

 

(1,429

)

 

 

15,564

 

 

 

(1,634

)

 

 

33,133

 

Corporate debt securities

 

 

(1,745

)

 

 

256,881

 

 

 

(5,603

)

 

 

350,324

 

 

 

(7,348

)

 

 

607,205

 

Municipal securities

 

 

(194

)

 

 

13,582

 

 

 

(3,451

)

 

 

166,593

 

 

 

(3,645

)

 

 

180,175

 

Other

 

 

(3

)

 

 

515

 

 

 

(49

)

 

 

1,027

 

 

 

(52

)

 

 

1,542

 

Total

 

$

(2,248

)

 

$

296,777

 

 

$

(10,686

)

 

$

540,354

 

 

$

(12,934

)

 

$

837,131

 

 

 

 

As of December 28, 2024

 

 

 

Less than 12 Consecutive Months

 

 

12 Consecutive Months or Longer

 

 

Total

 

 

 

Gross Unrealized Losses

 

 

Fair Value

 

 

Gross Unrealized Losses

 

 

Fair Value

 

 

Gross Unrealized Losses

 

 

Fair Value

 

Agency securities

 

$

(125

)

 

$

24,153

 

 

$

(352

)

 

$

6,647

 

 

$

(477

)

 

$

30,800

 

Mortgage-backed securities

 

 

(137

)

 

 

9,803

 

 

 

(4,238

)

 

 

29,421

 

 

 

(4,375

)

 

 

39,224

 

Corporate debt securities

 

 

(4,503

)

 

 

350,289

 

 

 

(19,334

)

 

 

667,176

 

 

 

(23,837

)

 

 

1,017,465

 

Municipal securities

 

 

(228

)

 

 

35,001

 

 

 

(9,679

)

 

 

226,901

 

 

 

(9,907

)

 

 

261,902

 

Other

 

 

—

 

 

 

—

 

 

 

(93

)

 

 

1,619

 

 

 

(93

)

 

 

1,619

 

Total

 

$

(4,993

)

 

$

419,246

 

 

$

(33,696

)

 

$

931,764

 

 

$

(38,689

)

 

$

1,351,010

 
Schedule of Amortized Cost and Estimated Fair Value of Marketable Securities by Maturity

The amortized cost and fair value of marketable securities at September 27, 2025, by maturity, are shown below.

 

 

 

Amortized Cost

 

 

Fair Value

 

Due in one year or less

 

$

471,374

 

 

$

466,785

 

Due after one year through five years

 

 

1,328,961

 

 

 

1,334,549

 

Due after five years through ten years

 

 

38,923

 

 

 

38,084

 

Due after ten years

 

 

4,744

 

 

 

3,991

 

Total

 

$

1,844,002

 

 

$

1,843,409