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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jul. 03, 2022 | Jul. 04, 2021
Cash flows from operating activities: |  |
Net income | $ 359,715 | $ 533,831
Adjustments to reconcile net income from operations to net cash provided by operating activities: |  |
Depreciation | 44,460 | 45,848
Stock-based compensation | 25,122 | 23,231
Amortization | 10,095 | 19,343
Deferred taxes | (23,597) | (800)
Losses (gains) on investments | 8,973 | (4,650)
Provision for excess and obsolete inventory | 6,695 | 3,625
Contingent consideration fair value adjustments | 0 | (7,227)
Loss on convertible debt conversions | 0 | 5,244
Retirement plan actuarial (gains) losses | 0 | (627)
Other | 522 | 199
Changes in operating assets and liabilities, net of businesses acquired: |  |
Accounts receivable | (146,384) | (372,698)
Inventories | (46,682) | 19,908
Prepayments and other assets | (94,751) | (117,416)
Accounts payable and other liabilities | (43,611) | 86,790
Deferred revenue and customer advances | 14,163 | 15,189
Retirement plans contributions | (2,618) | (2,739)
Income taxes | 10,815 | (2,628)
Net cash provided by operating activities | 122,917 | 244,423
Cash flows from investing activities: |  |
Purchases of property, plant and equipment | (89,743) | (73,957)
Purchases of marketable securities | (247,881) | (398,086)
Proceeds from maturities of marketable securities | 139,652 | 460,213
Proceeds from sales of marketable securities | 143,642 | 116,112
Purchase of investment | 0 | (12,000)
Net cash provided by (used for) investing activities | (54,330) | 92,282
Cash flows from financing activities: |  |
Issuance of common stock under stock purchase and stock option plans | 16,536 | 32,581
Repurchase of common stock | (532,799) | (196,584)
Payments related to net settlement of employee stock compensation awards | (32,780) | (31,794)
Payments of convertible debt principal | (42,292) | (66,828)
Dividend payments | (35,442) | (33,271)
Net cash used for financing activities | (626,777) | (295,896)
Effects of exchange rate changes on cash and cash equivalents | 8,014 | (489)
(Decrease) increase in cash and cash equivalents | (550,176) | 40,320
Cash and cash equivalents at beginning of period | 1,122,199 | 914,121
Cash and cash equivalents at end of period | 572,023 | 954,441
Non-cash investing activities: |  |
Capital expenditures incurred but not yet paid | $ 1,855 | $ 4,503

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