Closing prices for September 17, 2026
The series is stated in the current share scale after splits; dividends are not included in the price
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| September 17, 2026 | 351.11 | 360.26 | 350.00 | 353.13 | 3m |
| September 16, 2026 | 340.51 | 347.00 | 336.57 | 341.15 | 3m |
| September 15, 2026 | 337.83 | 338.48 | 326.37 | 332.85 | 3m |
| September 14, 2026 | 347.12 | 349.46 |
Based on reports through December 31, 2025
Teradyne makes the machines that test finished chips before they ship.
Every chip is tested before sale: does it run at the rated frequency, is any block defective. A tester costs millions, is bought by manufacturers and assembly houses, and demand for it is set not by phones sold but by fabs' decisions to expand capacity. Hence cyclicality sharper than that of chips themselves.
Test complexity grows faster than chip complexity: a processor with dozens of cores and integrated memory has disproportionately more states to verify. That is a structural tailwind. The second line is industrial robots for assembly lines, a separate and still small market. The company pays a dividend and buys back stock.
Address:600 RIVERPARK DRIVE, NORTH READING, MA, 01864, US
| 50m |
| ALNTAllient Inc. | 98.52 | +396.30 % | 25m |
| FEIMFrequency Electronics, Inc. | 83.39 | −143.00 % | 21m |
| TRNSTranscat, Inc. | 85.28 | +1.96 % | 10m |
| INTTinTest Corporation | 10.64 | −1.57 % | 2m |
| 328.59 |
| 329.20 |
| 5m |
| September 11, 2026 | 380.37 | 385.68 | 374.38 | 379.72 | 2m |
| September 10, 2026 | 372.21 | 375.00 | 365.82 | 370.19 | 2m |
| September 09, 2026 | 368.48 | 384.45 | 368.48 | 383.69 | 2m |
| September 08, 2026 | 365.03 | 377.76 | 364.42 | 372.06 | 3m |
| September 04, 2026 | 345.89 | 359.00 | 342.29 | 357.03 | 2m |
| September 03, 2026 | 332.86 | 341.61 | 326.00 | 338.59 | 2m |
| September 02, 2026 | 334.01 | 347.00 | 330.12 | 341.62 | 2m |
| September 01, 2026 | 341.30 | 342.31 | 328.10 | 335.46 | 3m |
| August 31, 2026 | 357.36 | 361.83 | 347.81 | 349.83 | 2m |
| August 28, 2026 | 368.54 | 370.58 | 353.25 | 354.97 | 2m |
| August 27, 2026 | 370.20 | 372.68 | 360.44 | 372.06 | 2m |
| August 26, 2026 | 366.17 | 366.52 | 357.03 | 363.10 | 2m |
| August 25, 2026 | 374.28 | 378.75 | 360.65 | 366.43 | 2m |
| August 24, 2026 | 360.12 | 367.82 | 349.01 | 364.90 | 3m |
| August 21, 2026 | 381.80 | 385.57 | 365.01 | 375.74 | 2m |
| August 20, 2026 | 377.34 | 385.93 | 372.90 | 383.15 | 2m |