CIEN
CIENA (CIEN)
NYSE
$322.34-$39.00 (-10.79%)
Price as of Oct 22, 2026 6:44 PM EDT
  • $51.2B
    Market Cap
  • 119.69%
    1-Year Change
  • Communication Equipment
    Industry
  • 1 Month
    -1.26%
    Low Price$332.73
    High Price$449.77
  • 3 Months
    -11.59%
    Low Price$317.46
    High Price$449.77
  • 1 Year
    +119.69%
    Low Price$164.48
    High Price$627.00
Date
Open
High
Low
Close
Change (%)
Volume
10/21/2026
354.56
363.97
349.87
361.34
+5.67%
3,016,501
10/20/2026
336.70
350.35
328.88
341.95
-0.65%
1,946,534
10/19/2026
348.31
354.45
338.79
344.20
+3.45%
3,065,967
10/16/2026
350.95
354.60
330.99
332.73
-6.67%
3,201,307
10/15/2026
342.50
357.83
333.15
356.52
-0.86%
3,486,679
10/14/2026
393.88
393.88
356.78
359.60
-10.19%
3,324,270
10/13/2026
393.33
401.87
381.64
400.40
-1.14%
2,737,641
10/12/2026
443.53
445.95
400.20
405.01
-9.95%
3,326,184
10/09/2026
436.00
454.73
424.02
449.77
+5.60%
3,780,736
10/08/2026
436.15
443.99
421.11
425.93
-4.60%
3,700,385
10/07/2026
428.98
448.00
422.30
446.45
+0.63%
3,372,457
10/06/2026
393.58
446.37
392.00
443.65
+13.85%
6,398,755
10/05/2026
393.77
397.47
382.50
389.69
-0.42%
2,475,181
10/02/2026
385.00
395.96
377.03
391.34
+3.22%
2,523,483
10/01/2026
355.19
381.00
350.68
379.14
+7.77%
2,572,075
09/30/2026
354.92
359.98
340.52
351.82
-0.87%
2,659,294
09/29/2026
350.16
356.21
344.80
354.92
+3.12%
2,227,429
09/28/2026
352.42
356.99
339.33
344.19
-3.56%
1,831,251
09/25/2026
363.00
366.43
355.01
356.91
-0.42%
1,618,512
09/24/2026
350.40
363.46
346.56
358.43
+0.71%
1,447,250
09/23/2026
368.64
369.00
351.53
355.91
-3.43%
1,854,239
09/22/2026
364.31
376.74
363.14
368.56
+0.71%
2,407,120
09/21/2026
365.05
367.62
356.46
365.96
+4.92%
2,890,519
09/18/2026
355.87
358.00
338.25
348.80
+1.32%
4,869,165
09/17/2026
350.60
375.70
341.93
344.25
+1.10%
3,766,926
09/16/2026
350.09
375.20
327.50
340.50
+1.85%
3,955,510
09/15/2026
324.44
335.97
320.50
334.33
+4.60%
2,798,139
09/14/2026
326.98
332.32
318.43
319.64
-8.55%
2,214,113
09/11/2026
336.92
355.19
336.44
349.54
+4.48%
1,981,537
09/10/2026
333.00
348.40
328.36
334.56
-1.02%
2,550,728
09/09/2026
341.90
348.00
337.16
338.00
-0.96%
1,813,232
09/08/2026
327.42
349.78
325.69
341.29
+6.32%
3,226,370
09/04/2026
321.67
328.85
315.73
321.00
+1.12%
3,344,356
09/03/2026
354.49
358.76
311.60
317.46
-10.36%
7,539,803
09/03/2026
$2.11 Earnings
09/02/2026
357.25
359.60
348.86
354.16
-1.71%
2,872,785
09/01/2026
376.89
381.60
356.40
360.33
-5.87%
2,273,421
08/31/2026
378.44
382.94
370.77
382.80
+1.15%
1,830,647
08/28/2026
400.42
400.50
376.64
378.44
-5.35%
1,318,582
08/27/2026
411.53
418.72
395.50
399.85
-1.03%
1,208,681
08/26/2026
387.23
406.44
387.23
404.03
+4.22%
1,194,540
08/25/2026
386.33
388.73
378.94
387.66
+4.22%
1,191,438
08/24/2026
386.26
386.26
362.48
371.95
-6.02%
1,779,493
08/21/2026
396.00
403.72
382.75
395.79
+0.84%
1,235,391
08/20/2026
400.35
404.35
389.10
392.48
-1.75%
1,453,149
08/19/2026
415.50
415.50
392.67
399.47
-1.50%
1,771,859
08/18/2026
421.59
427.74
391.77
405.54
-8.90%
3,052,261
08/17/2026
438.38
458.00
427.45
445.18
+3.83%
2,494,716
08/14/2026
441.61
446.15
422.49
428.77
-3.17%
2,518,982
08/13/2026
430.32
462.69
427.00
442.79
+2.49%
2,912,857
08/12/2026
414.51
446.36
409.24
432.05
+11.49%
3,989,294
08/11/2026
388.84
394.99
384.19
387.53
-0.04%
1,534,885
08/10/2026
420.00
420.00
387.28
387.70
-5.99%
2,021,836
08/07/2026
411.04
420.00
396.89
412.39
+2.14%
1,887,192
08/06/2026
396.05
419.49
390.56
403.76
-1.24%
1,354,185
08/05/2026
408.56
424.58
399.07
408.83
-0.56%
1,771,011
08/04/2026
419.08
427.00
405.01
411.13
+5.21%
2,070,125
08/03/2026
365.00
391.87
355.00
390.76
+3.64%
1,243,703
07/31/2026
393.98
401.00
374.38
377.05
+1.34%
1,956,803
07/30/2026
359.27
373.09
355.00
372.07
+12.62%
2,464,340
07/29/2026
349.64
350.80
323.29
330.37
-5.75%
2,638,150
07/28/2026
354.90
357.47
328.80
350.51
-7.09%
4,172,057
07/27/2026
388.19
388.19
360.00
377.27
-3.50%
1,513,129
07/24/2026
401.85
408.74
386.25
390.96
-4.07%
1,489,209
07/23/2026
394.10
415.80
394.10
407.53
+2.61%
1,803,707
07/22/2026
396.95
411.01
396.87
397.16
-2.83%
1,755,662
07/21/2026
397.70
412.04
396.55
408.73
+7.91%
2,036,385
07/20/2026
375.01
394.56
375.00
378.77
+1.16%
1,757,431
07/17/2026
370.99
388.61
359.01
374.41
-3.70%
3,366,056
07/16/2026
404.79
410.31
386.65
388.81
-7.09%
2,603,898
07/15/2026
451.01
451.01
404.40
418.46
-6.37%
1,655,773
07/14/2026
460.88
466.66
446.25
446.93
+0.33%
1,247,171
07/13/2026
448.67
461.45
440.51
445.44
-3.32%
1,257,426
07/10/2026
453.00
464.42
450.00
460.72
-0.35%
1,283,347
07/09/2026
460.60
485.69
459.81
462.34
+4.85%
2,073,521
07/08/2026
419.22
442.14
415.70
440.97
+5.27%
1,826,175
07/07/2026
418.77
425.96
404.43
418.91
-3.44%
1,815,721
07/06/2026
426.99
446.40
422.30
433.83
+2.69%
1,337,027
07/02/2026
454.16
459.73
414.17
422.46
-8.65%
2,155,633
07/01/2026
466.20
482.16
459.23
462.44
-5.73%
2,042,425
06/30/2026
478.93
491.79
472.59
490.56
+2.43%
2,445,462
06/29/2026
476.10
482.46
435.12
478.93
-0.12%
4,074,918
06/26/2026
466.33
493.26
457.70
479.50
-1.07%
8,740,846
06/25/2026
477.42
494.53
451.56
484.69
+4.57%
3,558,877
06/24/2026
449.36
480.59
440.70
463.51
+0.80%
2,804,281
06/23/2026
437.00
467.89
432.49
459.85
-0.10%
3,816,527
06/22/2026
437.83
461.50
430.51
460.33
+7.50%
3,882,629
06/18/2026
450.80
451.60
425.08
428.22
-1.95%
4,297,293
06/17/2026
433.00
449.00
424.33
436.72
+1.49%
2,883,827
06/16/2026
458.73
463.55
426.62
430.30
-7.14%
4,216,349
06/15/2026
469.95
479.51
447.63
463.41
+3.91%
4,024,223
06/12/2026
445.22
458.47
440.71
445.98
+0.17%
2,759,069
06/11/2026
441.66
451.10
430.82
445.22
+2.43%
3,000,405
06/10/2026
442.00
450.78
424.45
434.65
-1.07%
3,886,332
06/09/2026
465.91
467.60
417.34
439.34
-5.86%
7,941,984
06/08/2026
489.78
493.09
457.79
466.67
-4.41%
5,635,335
06/05/2026
512.31
525.15
488.14
488.21
-8.85%
4,195,261
06/04/2026
552.39
552.39
491.00
535.63
-13.66%
7,611,815
06/04/2026
$1.64 Earnings
06/03/2026
628.51
637.51
609.79
620.37
-1.06%
2,651,733