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Segment, Geographic and Significant Customer Information | 3 Months Ended
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Mar. 30, 2025
Segment Reporting [Abstract] |
Segment, Geographic and Significant Customer Information | U. SEGMENT, GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION As of December 31, 2024, Teradyne had two reportable segments (Semiconductor Test and Robotics) and four operating segments (Semiconductor Test, System Test, wireless test systems and Robotics). Effective March 2025, Teradyne's Chief Operating Decision Maker ("CODM") has placed Regan Mills as President, Product Test, in order to streamline operating activities of Production Board Test, Defense/Aerospace, and wireless test systems. As a result, as of March 30, 2025, Teradyne has three reportable segments (Semiconductor Test, Robotics, and Product Test). As of March 30, 2025, each of Teradyne's reportable segments represents an individual operating segment. All prior period disclosures have been recast to conform to the current segment structure and presentation requirements. The Semiconductor Test segment includes operations related to the design, manufacturing and marketing of semiconductor test products and services inclusive of storage and system level test products. The Robotics segment includes operations related to the design, manufacturing and marketing of collaborative robotic arms and autonomous mobile robots. The Product Test segment includes operations related to the design, manufacturing and marketing of products and services for defense/aerospace test, circuit-board test, and wireless test systems. Each reportable segment has a segment manager who is accountable to and maintains regular contact with Teradyne’s CODM (Teradyne’s chief executive officer) to discuss operating activities, financial results, forecasts, and plans for the segment. The CODM uses business segment income (loss) before income taxes predominantly in the annual budgeting and forecasting process. The CODM also uses this measure when making decisions about the allocation of operating and capital resources to each segment. The accounting policies of the business segments are the same as those described in Note B: “Accounting Policies.” Segment information for the three months ended March 30, 2025 and March 31, 2024, is as follows:
| Semiconductor Test |  |  | Robotics |  |  | Product Test |  |  | Total Reportable Segments |  |  | Corporate and Eliminations |  |  | Consolidated |
| (in thousands) |
Three months ended March 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 542,504 |  |  | $ | 68,987 |  |  | $ | 74,189 |  |  | $ | 685,680 |  |  | $ | — |  |  | $ | 685,680 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues |  | 202,747 |  |  |  | 32,292 |  |  |  | 30,035 |  |  |  | 265,074 |  |  |  | — |  |  |  | 265,074 |
Engineering and development |  | 80,211 |  |  |  | 15,855 |  |  |  | 11,539 |  |  |  | 107,605 |  |  |  | — |  |  |  | 107,605 |
Selling and marketing |  | 51,697 |  |  |  | 24,514 |  |  |  | 11,737 |  |  |  | 87,948 |  |  |  | — |  |  |  | 87,948 |
General and administrative |  | 26,552 |  |  |  | 9,865 |  |  |  | 4,969 |  |  |  | 41,386 |  |  |  | 1,763 |  |  |  | 43,149 |
Other segment items (1)(2) |  | 25,495 |  |  |  | 23,638 |  |  |  | 7,273 |  |  |  | 56,406 |  |  |  | 6,474 |  |  |  | 62,880 |
Income (loss) before taxes (2) |  | 155,802 |  |  |  | (37,177 | ) |  |  | 8,636 |  |  |  | 127,261 |  |  |  | (8,237 | ) |  |  | 119,024 |
Total assets (3) |  | 1,396,660 |  |  |  | 742,621 |  |  |  | 205,840 |  |  |  | 2,345,121 |  |  |  | 1,360,716 |  |  |  | 3,705,837 |
Property additions |  | 59,732 |  |  |  | 2,676 |  |  |  | 2,778 |  |  |  | 65,186 |  |  |  | — |  |  |  | 65,186 |
Depreciation and amortization expense |  | 22,865 |  |  |  | 5,941 |  |  |  | 1,506 |  |  |  | 30,312 |  |  |  | (10 | ) |  |  | 30,302 |
Three months ended March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 434,770 |  |  | $ | 87,654 |  |  | $ | 77,395 |  |  | $ | 599,819 |  |  | $ | — |  |  | $ | 599,819 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues |  | 192,894 |  |  |  | 34,453 |  |  |  | 28,278 |  |  |  | 255,625 |  |  |  | — |  |  |  | 255,625 |
Engineering and development |  | 65,649 |  |  |  | 15,787 |  |  |  | 11,800 |  |  |  | 93,236 |  |  |  | — |  |  |  | 93,236 |
Selling and marketing |  | 44,987 |  |  |  | 24,821 |  |  |  | 12,181 |  |  |  | 81,989 |  |  |  | — |  |  |  | 81,989 |
General and administrative |  | 21,062 |  |  |  | 13,217 |  |  |  | 5,116 |  |  |  | 39,395 |  |  |  | 1,772 |  |  |  | 41,167 |
Other segment items (1)(2) |  | 26,784 |  |  |  | 13,422 |  |  |  | 6,503 |  |  |  | 46,709 |  |  |  | 8,191 |  |  |  | 54,900 |
Income (loss) before taxes (2) |  | 83,394 |  |  |  | (14,046 | ) |  |  | 13,517 |  |  |  | 82,865 |  |  |  | (9,963 | ) |  |  | 72,902 |
Total assets (3) |  | 1,407,239 |  |  |  | 721,318 |  |  |  | 192,912 |  |  |  | 2,321,469 |  |  |  | 1,089,251 |  |  |  | 3,410,720 |
Property additions |  | 36,554 |  |  |  | 5,713 |  |  |  | 1,756 |  |  |  | 44,023 |  |  |  | — |  |  |  | 44,023 |
Depreciation and amortization expense |  | 19,871 |  |  |  | 6,431 |  |  |  | 1,749 |  |  |  | 28,051 |  |  |  | 69 |  |  |  | 28,120 |
(1) For each reportable segment, the other segment items category includes equity and variable compensation, acquired intangible assets amortization, inventory step-up, and restructuring and other charges. (2) Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, severance charges, pension and postretirement plan actuarial gains (losses), acquisition and divestiture related expenses, ERP implementation related costs, and an expense for the modification of outstanding equity awards. (3) Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities, and certain other assets.

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