Ciena Corporation CIEN

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Ciena Corporation Common Stock · Company · NYSE · Technology / Communication Equipment

Paper trade (simulated — no real money)

Fill: USD 320.2600 · FX 1 USD = 1.277900 SGD · about SGD 409.2602 per unit

Sign in to place simulated trades. 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 172.58 → 320.26 · 85.6%
627.000399.790172.580 1 2 3 4,5 6,7 8 9,10 11 12 13,14 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 23 Oct 2025 — 24 Oct 2026 (Last year)

Daily NYSE 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
325.9500 327.4000 313.4479 320.2600 1,968,736
343.4800 346.2900 320.7000 322.6400 3,933,100
354.5600 363.9700 349.8700 361.3400 3,006,100
336.7000 350.3500 328.8800 341.9500 1,946,500
348.3100 354.4500 338.7900 344.2000 3,063,100
Weekend
Weekend
350.9500 354.6000 330.9900 332.7300 3,196,800
342.5000 357.8300 333.1500 356.5200 3,483,800
393.8800 393.8800 356.7800 359.6000 3,324,300
393.3300 401.8700 381.6400 400.4000 2,736,500
443.5300 445.9500 400.2000 405.0100 3,318,700
Weekend
Weekend
436.0000 454.7300 424.0200 449.7700 3,773,200
436.1500 443.9900 421.1100 425.9300 3,697,700
428.9800 448.0000 422.3000 446.4500 3,369,200
393.5800 446.3700 392.0000 443.6500 6,396,600
393.7700 397.4700 382.5000 389.6900 2,473,900
Weekend
Weekend
385.0000 395.9600 377.0300 391.3400 2,519,400
355.1900 381.0000 350.6800 379.1400 2,564,300
354.9200 359.9800 340.5200 351.8200 2,656,100
350.1600 356.2100 344.8000 354.9200 2,226,000
352.4200 356.9900 339.3300 344.1900 1,830,200
Weekend
Weekend
363.0000 366.4300 355.0100 356.9100 1,616,900
350.4000 363.4600 346.5600 358.4300 1,418,900
368.6400 369.0000 351.5300 355.9100 1,851,600
364.3100 376.7400 363.1400 368.5600 2,404,800
365.0500 367.6200 356.4600 365.9600 2,886,500
Weekend
Weekend
355.8700 358.0000 338.2500 348.8000 4,863,900
350.6000 375.7000 341.9300 344.2500 3,764,100
350.0900 375.2000 327.5000 340.5000 3,947,500
324.4400 335.9700 320.5000 334.3300 2,796,700
326.9800 332.3200 318.4300 319.6400 2,210,600
Weekend
Weekend
336.9200 355.1900 336.4400 349.5400 1,979,900
333.0000 348.4000 328.3600 334.5600 2,548,400
341.9000 348.0000 337.1600 338.0000 1,812,600
327.4200 349.7800 325.6900 341.2900 3,223,600
No trading
Weekend
Weekend
321.6700 328.8500 315.7300 321.0000 3,340,000
14 · 10-Q After market open · 15:57 ET 10-Q ↗
354.4900 358.7600 311.6000 317.4600 7,535,400
13 · 8-K Pre-market · 07:07 ET 8-K ↗
357.2500 359.6000 348.8600 354.1600 2,870,300
376.8900 381.6000 356.4000 360.3300 2,259,300
378.4400 382.9400 370.7700 382.8000 1,826,500
Weekend
Weekend
400.4200 400.5000 376.6400 378.4400 1,317,800
411.5300 418.7200 395.5000 399.8500 1,207,100
387.2300 406.4400 387.2300 404.0300 1,189,500
386.3300 388.7300 378.9400 387.6600 1,191,100
386.2600 386.2600 362.4800 371.9500 1,777,300
Weekend
Weekend
396.0000 403.7200 382.7500 395.7900 1,234,900
400.3500 404.3500 389.1000 392.4800 1,453,100
415.5000 415.5000 392.6700 399.4700 1,771,900
421.5900 427.7400 391.7700 405.5400 3,052,300
438.3800 458.0000 427.4500 445.1800 2,494,700
Weekend
Weekend
441.6100 446.1500 422.4900 428.7700 2,519,000
430.3200 462.6900 427.0000 442.7900 2,912,900
414.5100 446.3600 409.2400 432.0500 3,989,300
388.8400 394.9900 384.1900 387.5300 1,534,900
420.0000 420.0000 387.2800 387.7000 2,021,700
Weekend
Weekend
411.0400 420.0000 396.8900 412.3900 1,887,200
396.0500 419.4900 390.5600 403.7600 1,354,100
408.5600 424.5800 399.0700 408.8300 1,773,900
419.0800 427.0000 405.0100 411.1300 2,068,800
365.0000 391.8700 355.0000 390.7600 1,243,700
Weekend
Weekend
393.9800 401.0000 374.3800 377.0500 1,948,400
359.2700 373.0900 355.0000 372.0700 2,461,500
349.6400 350.8000 323.2900 330.3700 2,633,300
354.9000 357.4700 328.8000 350.5100 4,177,400
388.1900 388.1900 360.0000 377.2700 1,512,500
Weekend
Weekend
401.8500 408.7400 386.2500 390.9600 1,489,200
394.1000 415.8000 394.1000 407.5300 1,803,700
396.9500 411.0100 396.8700 397.1600 1,755,700
397.7000 412.0400 396.5500 408.7300 2,036,400
375.0100 394.5600 375.0000 378.7700 1,757,400
Weekend
Weekend
370.9900 388.6100 359.0100 374.4100 3,366,100
404.7900 410.3100 386.6500 388.8100 2,602,500
451.0100 451.0100 404.4000 418.4600 1,655,800
460.8800 466.6600 446.2500 446.9300 1,247,200
448.6700 461.4500 440.5100 445.4400 1,220,500
Weekend
Weekend
453.0000 464.4200 450.0000 460.7200 1,282,900
460.6000 485.6900 459.8100 462.3400 2,045,400
419.2200 442.1400 415.7000 440.9700 1,826,200
418.7700 425.9600 404.4300 418.9100 1,815,700
426.9900 446.4000 422.3000 433.8300 1,329,600
Weekend
Weekend
No trading
454.1600 459.7300 414.1700 422.4600 2,153,800
466.2000 482.1600 459.2300 462.4400 2,042,900
478.9300 491.7900 472.5900 490.5600 2,445,500
476.1000 482.4600 435.1200 478.9300 4,074,900
Weekend
Weekend
466.3300 493.2600 457.7000 479.5000 8,736,100
477.4200 494.5300 451.5600 484.6900 3,554,900
449.3600 480.5900 440.7000 463.5100 2,802,000
437.0000 467.8900 432.4900 459.8500 3,816,500
437.8300 461.5000 430.5100 460.3300 3,863,800
Weekend
Weekend
No trading
450.8000 451.6000 425.0800 428.2200 4,297,300
433.0000 449.0000 424.3300 436.7200 2,883,800
458.7300 463.5500 426.6200 430.3000 4,210,600
469.9500 479.5100 447.6300 463.4100 3,955,900
Weekend
Weekend
445.2200 458.4700 440.7100 445.9800 2,665,200
12 · 8-K After-hours · 16:21 ET 8-K ↗
441.6600 451.1000 430.8200 445.2200 3,000,400
442.0000 450.7800 424.4500 434.6500 3,869,900
465.9100 467.6000 417.3400 439.3400 7,863,900
489.7800 493.0900 457.7900 466.6700 5,635,300
11 · 8-K Pre-market · 07:08 ET 8-K ↗
Weekend
Weekend
512.3100 525.1500 488.1400 488.2100 4,195,400
10 · 10-Q After-hours · 16:06 ET 10-Q ↗
552.3900 552.3900 491.0000 535.6300 7,611,800
9 · 8-K Pre-market · 07:05 ET 8-K ↗
628.5100 637.5100 609.7900 620.3700 2,654,000
583.5800 629.6100 581.6300 627.0000 2,725,900
559.5200 579.9700 552.5900 569.6100 2,894,200
Weekend
Weekend
566.0200 582.4700 539.5700 580.2300 3,862,900
598.8000 604.4300 561.3000 570.1800 1,813,700
605.5400 605.5400 576.8800 582.0800 1,751,500
591.0000 605.6100 575.5100 602.3900 1,407,700
No trading
Weekend
Weekend
599.0000 599.5000 574.0300 583.7400 1,620,800
557.0000 590.1300 555.7100 587.2300 1,548,500
554.2100 572.3900 545.1000 554.7600 1,985,900
514.0400 542.9200 499.0100 541.9200 2,331,500
563.4900 567.0800 516.6100 524.5300 2,502,800
Weekend
Weekend
570.6500 574.2000 553.3000 554.4600 2,423,400
577.9000 591.5700 566.0000 591.5700 1,121,900
594.0000 598.8400 562.5000 577.9000 1,272,700
567.7800 582.0000 546.9800 577.1500 1,603,700
558.0000 593.0000 550.4900 581.4700 2,380,700
Weekend
Weekend
549.0000 564.8300 538.7700 548.1100 1,501,600
564.3900 569.0000 515.4900 538.7600 3,546,900
563.0000 583.7800 550.0600 576.7900 2,244,800
553.6300 562.0000 539.4300 544.7500 1,632,400
540.0000 548.2000 528.3600 538.5100 1,198,600
Weekend
Weekend
527.2500 550.0000 518.5800 535.2900 1,733,800
487.9700 529.8900 486.2500 527.5800 2,665,500
480.1400 482.5400 468.3100 475.3900 1,830,400
485.0000 493.3100 461.0700 473.6900 3,103,100
515.8200 516.3400 485.0000 506.3400 1,684,200
Weekend
Weekend
514.8200 527.5000 505.5500 520.8000 1,418,300
505.0000 527.8600 497.0900 515.8500 2,281,900
511.5000 518.1500 467.1900 498.9700 2,778,000
507.7700 522.5000 493.5400 505.9300 1,805,700
512.0000 517.8800 497.6200 503.2700 1,963,500
Weekend
Weekend
500.4700 513.8300 495.1700 507.4300 1,926,300
476.7500 495.4000 462.0000 495.1700 2,298,700
471.7800 481.2800 454.3400 475.7600 3,041,100
486.7500 487.7400 458.0100 467.1900 3,429,500
493.4400 494.6000 472.3200 479.9000 3,048,400
Weekend
Weekend
498.1100 508.6400 475.2200 496.0200 2,498,400
498.9100 513.4900 473.7300 487.3800 3,280,400
475.5000 499.3900 471.6600 494.0100 4,110,400
435.2800 449.3400 421.3000 447.8800 1,969,500
455.4500 459.8000 432.7700 434.2600 1,939,100
Weekend
Weekend
No trading
400.9800 453.0000 400.0000 447.7600 3,617,700
401.7100 421.9900 399.8200 415.3900 2,677,100
8 · 8-K After market open · 15:21 ET 8-K ↗
373.7700 388.7200 364.1600 388.2300 3,021,000
411.0000 414.7500 361.7000 365.0000 3,512,400
Weekend
Weekend
394.8200 411.5000 391.3600 401.6100 2,518,000
428.4700 428.7400 387.4000 387.9900 3,719,900
431.5100 446.8900 423.8800 437.7000 2,670,800
405.0000 434.2200 405.0000 429.3800 3,382,000
399.4000 415.5700 393.9600 407.9000 3,544,000
Weekend
Weekend
416.0000 419.8000 380.1100 383.8900 5,809,600
373.1200 416.7600 371.0000 412.5800 3,934,600
376.0000 402.1700 376.0000 385.2600 4,159,500
358.3100 379.4200 350.3600 370.0500 3,264,000
345.0000 367.4500 344.9900 363.8800 3,759,700
Weekend
Weekend
339.2200 353.2500 334.5000 337.3800 2,425,800
344.2600 350.3300 329.4100 336.8300 2,641,100
333.8900 346.0600 329.5800 339.9500 2,058,400
325.0000 349.7700 325.0000 337.3600 3,020,900
289.4900 319.2900 287.2500 318.5400 3,070,300
Weekend
Weekend
294.8100 315.8400 293.1100 294.1700 3,924,200
7 · 10-Q After-hours · 16:01 ET 10-Q ↗
312.0100 315.5000 278.3900 299.3000 7,847,000
6 · 8-K Pre-market · 07:49 ET 8-K ↗
339.1900 353.7800 335.0000 343.5500 2,708,600
339.5700 340.6900 320.3200 333.0700 3,014,100
353.7600 364.0500 345.0600 353.7300 2,527,500
Weekend
Weekend
340.6600 353.5700 337.1100 348.7000 3,083,000
354.5900 358.6300 326.7600 341.1600 2,612,900
345.9900 365.9000 345.6800 353.3300 2,348,300
341.0000 348.2800 334.9100 342.7000 2,270,200
332.8600 346.5500 330.2000 344.8400 2,197,400
Weekend
Weekend
317.0400 340.2700 314.6900 334.9500 2,527,700
308.8800 320.4200 303.5500 318.4100 2,389,500
302.7200 317.2800 299.9600 310.9600 2,223,800
297.9100 307.6300 286.8100 302.3300 2,182,200
No trading
Weekend
Weekend
293.8300 304.1800 270.0000 303.9200 3,088,200
5 · DEFA14A After market open · 11:10 ET DEFA14A ↗ 4 · DEF 14A After market open · 10:56 ET DEF 14A ↗
300.0000 305.0000 284.1500 292.9600 2,871,500
307.2800 308.8100 286.5500 297.2500 3,525,900
288.0800 298.9900 280.0400 298.7000 2,274,500
270.7000 297.0100 266.6100 289.6800 4,303,800
Weekend
Weekend
262.6500 273.0000 251.2600 271.3200 33,471,400
242.6400 261.0000 238.5700 252.9800 3,316,200
277.0500 285.9700 248.9700 253.5000 5,577,100
276.5500 284.7900 266.2000 276.5200 3,186,600
247.9300 271.2100 246.0300 268.4900 2,534,000
Weekend
Weekend
254.0100 269.9000 247.4700 251.8100 3,246,900
257.0000 259.8300 241.6800 253.5300 2,262,400
247.5200 258.4300 244.7400 257.3000 2,073,000
239.9000 247.7500 236.1800 247.5200 1,971,300
230.0000 242.0000 225.7100 232.2300 1,471,500
Weekend
Weekend
229.1600 232.0300 220.5200 229.1400 1,806,100
236.6200 239.1200 222.8700 230.0300 2,095,000
241.5200 242.0000 226.8200 231.8900 2,884,900
229.1500 246.2100 227.3700 241.2100 2,737,900
No trading
Weekend
Weekend
247.0900 253.9000 241.5500 243.4200 2,056,200
245.0000 252.2000 243.3500 243.7900 1,747,700
244.9100 245.8000 233.1700 238.3800 1,776,700
234.9000 249.9600 234.2600 246.4200 1,699,200
227.5900 234.2700 223.5000 234.2600 2,240,000
Weekend
Weekend
219.2800 230.8600 216.0700 230.5600 2,772,100
258.2600 259.0000 221.1400 225.2100 4,574,100
253.0000 261.1300 248.9900 259.2700 3,220,700
230.2000 254.8200 221.1200 254.1900 3,456,200
250.3400 252.6000 223.2700 230.9000 3,215,900
Weekend
Weekend
241.0000 248.5000 237.6200 246.0600 1,985,000
No trading
239.0800 239.9000 232.4100 233.8700 1,170,200
240.1700 240.5000 236.8300 238.3600 1,163,000
237.2600 241.2300 230.1300 239.0000 1,755,600
Weekend
Weekend
240.9000 242.5100 238.4300 241.6800 946,900
No trading
240.5900 242.0000 237.9300 240.2800 833,200
234.7500 243.0000 234.7500 240.2900 1,802,100
235.0000 239.3800 230.4000 236.7500 2,811,400
Weekend
Weekend
212.7400 231.3500 212.4200 230.3400 4,528,300
212.0000 215.4700 209.0000 210.7100 3,057,100
212.8500 215.7000 201.7000 203.9000 2,365,600
214.4600 215.4400 206.5400 209.8400 2,727,100
220.8400 226.0200 215.6000 216.1800 2,686,500
Weekend
Weekend
3 · 10-K After market open · 13:42 ET 10-K ↗
236.0000 237.9100 215.1800 218.4400 4,664,500
236.3500 248.0000 222.4500 242.3700 8,607,300
2 · 8-K Pre-market · 07:07 ET 8-K ↗
216.5000 226.2400 214.4000 221.8500 3,822,200
212.9300 219.8800 212.2800 214.3500 3,288,500
205.0000 213.0300 203.0000 212.9300 3,775,000
Weekend
Weekend
199.6300 201.7700 194.8500 201.7100 2,332,300
190.5600 197.7600 190.0100 195.7300 2,447,300
1 · 8-K Next filing day · accepted 03 Dec, 17:34 ET 8-K ↗
201.0000 202.2200 186.3900 193.3500 3,809,100
204.0300 209.1900 198.0100 202.5000 2,282,800
194.4900 201.4400 192.2000 200.9200 2,303,800
Weekend
Weekend
203.8000 204.5900 201.0000 204.2100 1,262,400
No trading
197.3600 203.1700 195.8200 200.2900 2,033,300
191.5100 196.2400 187.5500 196.2400 2,114,000
183.0500 196.5200 182.1800 194.7000 14,026,600
Weekend
Weekend
175.9700 179.0000 168.2200 178.2600 3,812,300
198.1100 202.6000 175.4300 176.4500 3,939,200
187.9300 192.3500 184.6700 188.7800 2,725,900
189.0300 191.8400 182.8900 187.0000 3,498,800
190.8000 196.4000 188.0400 191.7800 3,143,600
Weekend
Weekend
184.0500 195.9100 183.0800 191.7100 5,733,900
206.9900 207.8300 191.8100 194.2100 3,621,700
209.9400 211.0700 206.0800 209.5200 2,188,800
204.5300 208.2500 200.7500 207.4300 2,880,000
206.8000 214.1700 205.1600 208.7400 3,523,300
Weekend
Weekend
193.0000 201.3400 190.1500 199.2600 3,331,000
199.4100 203.4000 195.2500 201.4600 2,829,700
183.9900 196.9900 182.4900 195.8100 2,782,500
182.5300 188.7700 177.4100 182.8700 3,044,900
193.3400 194.4100 187.9300 189.5600 1,725,700
Weekend
Weekend
189.5900 193.0300 185.2700 189.9200 2,146,200
188.1700 193.7400 186.1300 188.9600 1,940,800
184.7000 193.1200 184.5000 189.2700 2,589,100
182.2600 184.9800 173.8000 183.0400 2,597,000
182.6300 186.3200 180.9200 182.5400 1,909,200
Weekend
Weekend
175.8300 181.0500 175.5900 179.0500 1,851,300
164.4800 173.8400 164.1300 172.5800 2,242,000

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.

14 10-Q 10-Q (opens SEC filing in a new tab) After market open · 15:57 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:07 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:21 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:08 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After market open · 15:21 ET Summarise
7 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:49 ET Summarise
5 DEFA14A DEFA14A (opens SEC filing in a new tab) After market open · 11:10 ET Summarise
4 DEF 14A DEF 14A (opens SEC filing in a new tab) After market open · 10:56 ET Summarise
3 10-K 10-K (opens SEC filing in a new tab) After market open · 13:42 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:07 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 03 Dec, 17:34 ET Summarise