Teradyne, Inc TER

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Teradyne, Inc. - Common Stock · Company · Nasdaq · Technology / Semiconductor Equipment & Materials

Paper trade (simulated — no real money)

Fill: USD 308.8500 · FX 1 USD = 1.277900 SGD · about SGD 394.6794 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 144.28 → 308.85 · 114.1%
483.840314.060144.280 1 2 3 4 5 6,7 8 9 10 11 12 13 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
306.3500 317.7900 304.2700 308.8500 2,667,665
323.6600 324.4500 306.8400 308.7500 5,870,900
345.5500 351.9500 341.5100 345.4900 2,134,200
328.0300 342.9800 322.3300 336.5900 2,413,100
341.5000 348.3800 333.0000 335.5300 3,403,800
Weekend
Weekend
339.1400 341.0100 324.0900 325.0000 3,204,000
341.8000 344.8800 331.8900 343.2100 4,530,500
368.0400 371.7100 354.7400 359.4400 3,774,500
371.5000 381.1000 362.5400 380.2900 2,737,300
394.0900 394.6800 381.7400 383.8500 2,729,400
Weekend
Weekend
405.1900 414.2600 399.3100 402.6800 1,813,700
405.0000 410.7300 388.8500 398.7200 3,393,200
415.1800 416.6900 404.8000 411.7800 2,396,200
445.0700 448.0000 427.0400 430.3200 2,010,000
447.0900 447.7100 435.5000 444.5300 1,678,200
Weekend
Weekend
430.8000 451.8600 427.0300 449.0400 3,399,000
402.9000 419.3700 401.2400 415.7900 1,708,400
402.6000 404.4600 393.1400 400.9100 1,523,800
410.8500 415.6100 399.8400 403.0200 2,568,000
394.7000 401.9700 383.5000 401.3000 2,027,700
Weekend
Weekend
394.8500 400.4600 388.3800 398.3800 1,605,600
383.0800 388.5400 376.0200 387.7000 1,332,200
398.0000 398.6800 378.3100 389.1400 2,008,700
373.0000 399.4000 370.4500 398.6900 2,316,600
378.7100 384.9900 370.8800 381.5400 3,392,300
Weekend
Weekend
359.2400 371.7100 356.9700 371.4700 4,289,900
352.8600 360.2600 350.0000 353.1300 2,597,700
340.5100 347.0000 336.5700 341.1500 2,541,300
337.8300 338.4800 326.3700 332.8500 2,691,500
347.1200 349.4600 328.5900 329.2000 4,886,500
Weekend
Weekend
380.3700 385.6800 374.3800 379.7200 2,393,400
372.2100 375.0000 365.8200 370.1900 2,310,000
368.4800 384.4500 368.4800 383.6900 2,285,200
365.0300 377.7600 364.4200 372.0600 2,790,300
No trading
Weekend
Weekend
345.8900 359.0000 342.2900 357.0300 2,246,300
332.8600 341.6100 326.0000 338.5900 1,690,400
334.0100 347.0000 330.1200 341.6200 1,816,200
341.3000 342.3100 328.1000 335.4600 2,585,900
357.3600 361.8300 347.8100 349.8300 1,903,500
Weekend
Weekend
368.5400 370.5800 353.2500 354.9700 2,401,000
370.2000 372.6800 360.4400 372.0600 2,445,800
366.1700 366.5200 357.0300 363.1000 2,218,700
374.2800 378.7500 360.6500 366.4300 1,679,400
360.1200 367.8200 349.0100 364.9000 2,661,800
Weekend
Weekend
381.8000 385.5700 365.0100 375.7400 1,907,400
377.3400 385.9300 372.9000 383.1500 1,995,900
405.1900 405.1900 374.0100 379.6500 2,765,200
419.1500 424.7600 392.1800 404.2900 4,293,800
425.0000 444.1700 420.2200 443.1400 3,107,400
Weekend
Weekend
410.5100 419.0000 398.4200 418.7900 1,842,600
399.4000 422.3200 398.0000 410.5200 1,880,300
396.5000 408.5500 393.1600 402.7400 2,957,100
373.7900 387.8100 371.2000 379.5600 1,810,700
13 · 8-K After-hours · 16:08 ET 8-K ↗
386.6600 387.0000 364.2600 365.1000 2,377,200
Weekend
Weekend
397.6000 397.6000 372.8000 379.3100 3,737,900
382.0100 396.5900 370.0000 384.8900 2,629,600
402.4700 409.4000 386.0800 389.3900 3,183,600
388.6100 409.7200 382.8700 403.5600 4,144,100
359.9200 370.4000 349.3100 365.8000 2,698,700
Weekend
Weekend
12 · 10-Q After market open · 13:00 ET 10-Q ↗
382.9900 392.0000 362.2300 367.6900 3,771,500
347.9000 369.0000 344.5000 365.4900 7,309,100
367.9000 372.2300 319.1900 319.4100 9,221,700
11 · 8-K Pre-market · 06:00 ET 8-K ↗
319.3400 323.9600 301.0000 320.6500 5,795,500
349.9300 355.2500 319.6000 334.7700 4,145,300
Weekend
Weekend
365.0000 371.3600 345.4700 349.9200 2,945,200
362.9700 378.5000 362.6700 373.7500 2,092,400
362.6500 376.3700 360.8000 369.4600 2,143,000
361.0000 379.1900 356.0100 374.0400 3,997,900
335.2200 351.2300 331.2800 333.7600 2,940,500
Weekend
Weekend
305.8900 330.6800 296.8200 322.3600 3,518,700
332.2400 335.3900 317.7400 322.3000 3,623,900
356.3000 358.0000 325.1400 342.1200 3,182,600
363.5700 365.0000 347.1600 353.2300 2,111,200
345.0000 348.5900 334.3500 341.1100 3,105,000
Weekend
Weekend
353.4600 362.5500 344.9700 359.6000 1,571,900
379.2400 385.0000 360.6600 362.7500 3,708,100
342.9900 354.2700 335.0600 351.5700 3,194,200
354.0600 361.0500 328.2800 343.1100 6,405,400
386.5800 399.8000 377.1700 379.5200 3,447,000
Weekend
Weekend
No trading
427.4100 429.7400 362.0100 369.0900 5,932,300
461.0000 463.6600 425.1100 427.3400 5,465,800
467.5000 487.9100 460.0000 483.8400 5,022,400
440.6200 469.1100 414.9300 463.2100 5,089,100
Weekend
Weekend
453.7400 456.2400 423.0700 436.8600 11,486,400
454.0000 472.3700 427.0900 471.9600 7,025,300
423.0700 433.0000 413.7700 427.2000 3,256,600
410.1700 428.6700 408.7700 420.1200 7,671,700
456.1400 459.1900 439.6100 457.0000 4,338,500
Weekend
Weekend
No trading
421.8300 439.5000 421.8300 437.9200 17,958,200
429.2300 440.7500 408.2400 408.5600 3,527,600
432.2500 436.2500 409.2200 409.3500 3,977,800
426.4500 437.7700 423.0300 432.4100 4,558,000
Weekend
Weekend
381.9400 408.0000 380.0000 403.2000 3,322,900
358.5500 381.5400 356.6000 381.4000 5,027,400
360.2700 374.8200 345.6100 347.5900 3,745,800
386.6000 395.6500 340.3400 369.2100 4,262,100
377.8400 380.1700 368.4100 374.6900 2,940,900
Weekend
Weekend
389.5400 392.9200 354.1300 357.9300 5,471,100
396.4300 413.8700 388.0900 406.8600 4,214,000
397.0000 420.6000 393.6000 409.6700 3,254,600
370.7700 392.9000 365.7800 392.6200 3,413,100
366.5100 376.7000 360.1400 369.4700 2,523,400
Weekend
Weekend
385.1600 386.9700 368.1000 374.3100 4,129,200
381.5600 386.3000 364.8300 382.6500 2,762,100
402.1300 406.6500 365.0500 375.8300 3,275,000
371.6300 390.3500 367.6200 389.1400 4,005,700
No trading
Weekend
Weekend
355.0000 360.3400 352.4100 358.4400 2,708,500
345.3700 359.4700 343.3300 353.4400 3,587,000
327.8600 344.4700 324.4800 344.3400 3,387,500
314.1200 325.2100 309.4100 321.5200 3,489,000
337.8800 342.0400 315.6700 321.0500 4,670,100
Weekend
Weekend
339.5700 346.5900 335.3200 337.8800 4,251,900
362.0000 365.0000 353.5900 356.5500 2,352,500
366.3100 366.9000 350.0200 363.3800 3,628,700
356.6100 359.8300 340.2500 358.4500 5,646,000
355.6400 367.4700 354.2500 366.6400 4,427,900
10 · 8-K Pre-market · 08:55 ET 8-K ↗
Weekend
Weekend
367.0000 367.8700 354.2400 359.7700 3,486,000
378.5400 379.0000 345.5600 354.1100 5,001,500
368.5100 383.0000 364.7900 382.4800 3,836,200
345.5900 366.1300 345.0400 357.1000 3,565,700
344.4200 349.8200 336.7600 337.4400 3,100,000
Weekend
Weekend
9 · 10-Q After market open · 14:30 ET 10-Q ↗
343.4100 354.0000 336.6500 345.4200 2,876,800
327.0000 353.5400 326.7300 343.4700 7,836,300
314.5400 335.0000 301.8600 306.3300 13,070,500
8 · 8-K Pre-market · 06:00 ET 8-K ↗
389.0000 396.3400 374.6800 380.1300 4,596,200
421.4400 421.4400 389.3000 402.0000 4,027,200
Weekend
Weekend
408.8300 422.1100 401.1400 418.0800 3,234,600
389.7400 404.8300 389.3700 400.9900 2,476,200
388.9000 390.8000 376.3500 385.1800 2,223,200
379.1600 387.4500 375.9300 379.9300 1,833,900
382.7100 384.9700 373.0000 375.2100 1,819,400
Weekend
Weekend
375.7400 381.4700 371.1000 380.3800 2,423,200
365.7400 369.3000 358.1900 365.9200 1,818,600
363.0000 368.1900 351.9600 364.9600 2,366,600
366.5700 370.0000 362.5000 365.5100 2,639,900
365.9400 370.4200 362.0200 370.1300 2,434,700
Weekend
Weekend
370.9600 373.0000 365.5000 367.9900 3,113,400
360.0000 369.6400 357.2300 364.2100 4,484,300
344.0300 358.6900 340.0000 358.2900 5,814,100
314.4200 320.8600 309.5900 320.4800 1,894,800
312.1200 315.8500 305.9300 315.4300 1,762,900
Weekend
Weekend
No trading
290.0000 313.4900 290.0000 309.6100 2,744,900
301.9700 316.8100 300.3000 312.2000 2,961,800
278.3000 297.3900 277.9300 296.4600 3,354,000
301.0000 301.0000 273.0700 276.3500 3,130,100
Weekend
Weekend
293.4000 302.4000 293.1800 295.6100 2,164,200
7 · DEFA14A Pre-market · 07:04 ET DEFA14A ↗ 6 · DEF 14A Pre-market · 07:03 ET DEF 14A ↗
314.9800 314.9800 296.6700 297.3400 3,017,600
324.9900 325.8100 313.4800 323.3600 3,077,100
300.0000 327.4200 298.0000 320.1400 3,207,700
301.0100 314.4900 300.0100 303.9200 4,243,500
Weekend
Weekend
302.0900 303.0000 284.8600 290.8300 4,996,200
285.8900 304.2500 283.4600 302.4000 2,808,100
303.1900 307.8000 296.5000 300.0700 2,653,400
297.0000 299.6700 288.4500 299.4000 2,481,800
295.9600 305.0000 294.6600 298.2700 2,448,400
Weekend
Weekend
290.0000 295.5500 284.5700 286.4200 2,166,100
295.5000 296.2500 283.6400 286.6100 2,956,400
301.0300 312.6200 299.5300 301.9900 2,580,500
294.9400 309.7900 294.9400 300.7700 2,829,500
265.4000 296.4400 263.0200 296.4400 6,533,700
Weekend
Weekend
293.1400 295.0600 269.1300 273.0500 5,896,900
299.8000 310.3500 291.8800 305.5800 3,936,100
311.4700 315.0000 300.4400 305.2000 3,358,900
308.5100 311.0100 295.3800 304.2200 3,698,500
310.5000 325.9300 310.0700 325.8300 2,488,700
Weekend
Weekend
324.0000 325.0000 310.0000 320.0300 4,426,300
343.8000 344.9200 328.5000 332.7000 4,915,300
332.8700 343.6900 330.6900 342.8200 3,102,700
323.0200 332.4200 316.5900 329.0900 2,271,300
319.2900 323.5000 310.4500 318.5000 2,567,600
Weekend
Weekend
319.0800 327.0000 316.2700 324.8500 2,603,500
5 · 10-K After market open · 14:01 ET 10-K ↗
311.2200 318.2300 308.9800 315.9000 1,826,700
306.9200 321.7800 304.6500 314.8200 2,753,700
306.2500 315.9900 300.4000 305.5300 2,383,300
No trading
Weekend
Weekend
308.5800 318.1700 302.4900 314.6600 2,600,600
324.7000 327.9900 307.6200 311.0300 5,023,400
312.4300 325.2900 310.9100 321.4500 3,651,400
310.0000 311.8600 299.4800 304.8900 2,930,500
297.7800 316.5400 296.5000 310.0100 5,345,100
Weekend
Weekend
281.6700 301.3800 281.0000 300.1100 5,021,100
265.7200 281.3700 262.2800 271.1300 3,896,600
283.7100 295.5000 263.2000 269.0700 7,187,400
258.1600 286.0000 246.8000 282.9800 11,795,000
4 · 8-K Pre-market · 06:01 ET 8-K ↗
241.0500 254.6800 240.6700 249.5300 6,576,500
Weekend
Weekend
248.3800 255.2000 238.8000 241.0500 3,704,500
251.3900 253.6100 239.7000 251.8700 2,695,100
243.5600 251.1500 241.0100 250.4800 3,909,300
236.7500 240.0300 235.4200 238.9400 2,805,200
229.1800 235.0800 227.0200 231.7500 2,084,300
Weekend
Weekend
228.4800 230.2000 224.1600 229.1800 1,830,500
237.8000 238.0000 226.3000 229.1400 2,807,300
229.1900 234.8400 225.7100 231.8900 3,005,500
220.4200 229.0700 220.3200 223.9800 2,627,800
No trading
Weekend
Weekend
229.6400 232.0900 225.6500 228.1500 2,298,000
236.1600 238.9200 227.4800 227.7000 3,459,800
227.5000 231.1300 224.6100 230.1900 2,423,500
224.3600 230.3200 224.3600 229.2700 2,313,900
217.9400 226.2100 216.5800 224.3600 2,448,100
Weekend
Weekend
215.7400 219.4200 215.6600 217.2600 2,569,900
221.4000 221.4000 212.6400 216.3100 3,141,800
225.6100 226.7600 219.3100 222.4800 2,518,400
220.9500 229.6600 219.6200 228.8400 3,377,900
211.8500 222.0000 211.8000 219.5000 4,271,600
Weekend
Weekend
199.2900 208.8100 199.2600 207.5600 3,224,100
No trading
197.7700 198.3000 193.4000 193.5600 1,193,900
198.0100 198.2000 195.0000 196.6700 1,989,400
196.7100 199.0900 195.6000 197.3600 1,717,900
Weekend
Weekend
199.2500 199.4700 196.7300 198.9000 1,247,800
No trading
198.5000 199.6300 197.2900 198.5300 713,100
196.1400 199.3200 195.6100 198.5000 1,344,900
201.0500 202.0000 196.9100 197.2200 2,756,500
Weekend
Weekend
191.9400 196.4900 191.5100 195.1800 7,880,500
192.5000 195.0800 189.2700 190.4500 2,754,700
194.0000 194.5700 182.1600 185.2100 3,577,500
194.4000 195.3800 189.1400 192.2900 3,711,500
199.9100 200.4900 193.5500 194.7000 3,223,300
Weekend
Weekend
201.3100 202.2900 191.8500 193.3700 4,163,300
201.1400 204.0300 195.9800 203.9700 2,507,100
199.7800 204.7000 198.8300 204.0100 2,057,200
200.2000 201.8800 198.0000 199.9700 1,871,400
203.0600 205.0000 201.4800 202.9900 2,100,000
Weekend
Weekend
200.0000 203.1200 199.0400 200.7700 2,656,000
193.0000 200.8500 193.0000 198.6300 4,260,700
191.5200 196.2000 189.0000 195.0800 3,339,200
186.3400 191.4800 185.8900 189.9400 3,721,700
179.1700 182.8700 178.0400 179.6300 2,765,800
Weekend
Weekend
179.7000 182.1700 179.4600 181.8900 1,877,100
No trading
169.6200 180.8900 168.8100 179.3800 3,744,500
165.3300 168.0900 160.3600 167.6700 2,833,700
160.0000 167.6100 159.5000 165.9700 5,139,900
Weekend
Weekend
155.3300 160.6200 151.5200 158.9100 3,871,300
172.2800 173.8300 154.7100 155.9000 5,142,700
164.5800 170.4000 162.7600 168.2300 2,726,200
165.5100 167.3200 163.0000 163.7200 2,803,700
168.4700 173.3800 164.4900 167.4400 3,517,700
Weekend
Weekend
163.9200 173.8100 163.2000 169.9700 3,208,300
176.2300 177.0000 167.6000 169.5900 4,473,200
180.2000 181.2700 177.1900 179.2700 2,365,600
183.3600 183.3600 175.6500 177.2300 2,928,800
188.3800 188.7500 180.6700 184.0800 2,954,400
Weekend
Weekend
180.5400 182.5000 174.8500 182.2800 3,627,400
187.7500 191.5600 182.8500 185.0200 4,504,200
177.0500 188.9400 176.5000 187.5900 4,135,300
176.2600 182.3200 175.1000 175.6500 3,216,500
182.7900 184.5700 180.1900 183.0700 3,309,900
Weekend
Weekend
180.0000 185.9100 178.0000 181.7600 4,540,000
3 · 10-Q After-hours · 16:01 ET 10-Q ↗
172.7500 179.2100 171.7000 176.8800 5,268,400
170.0100 177.2400 162.1600 173.9400 12,203,800
2 · 8-K Pre-market · 07:00 ET 8-K ↗ 1 · 8-K After-hours · 17:16 ET 8-K ↗
147.0500 147.6200 144.1100 144.3800 5,016,800
148.1000 150.0800 146.7000 147.5000 3,940,900
Weekend
Weekend
147.5600 149.0000 144.0700 144.2800 2,079,600

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) After market open · 13:00 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:00 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:55 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) After market open · 14:30 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:00 ET Summarise
7 DEFA14A DEFA14A (opens SEC filing in a new tab) Pre-market · 07:04 ET Summarise
6 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 07:03 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) After market open · 14:01 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:01 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:00 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:16 ET Summarise