CIEN
CIENA (CIEN)
NYSE
$396.25+$0.46 (+0.12%)
Price as of Aug 21, 2026 7:59 PM EDT
  • $56.0B
    Market Cap
  • 340.70%
    1-Year Change
  • Communication Equipment
    Industry
  • 1 Month
    -3.17%
    Low Price$330.37
    High Price$445.18
  • 3 Months
    -32.60%
    Low Price$330.37
    High Price$627.00
  • 1 Year
    +340.70%
    Low Price$90.74
    High Price$627.00
Date
Open
High
Low
Close
Change (%)
Volume
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
06/02/2026
583.58
629.61
581.63
627.00
+10.08%
2,725,851
06/01/2026
559.52
579.97
552.59
569.61
-1.83%
2,894,144
05/29/2026
566.02
582.47
539.57
580.23
+1.76%
3,867,802
05/28/2026
598.80
604.43
561.30
570.18
-2.04%
1,821,600
05/27/2026
605.54
605.54
576.88
582.08
-3.37%
1,754,744
05/26/2026
591.00
605.61
575.51
602.39
+3.19%
1,410,999
05/22/2026
599.00
599.50
574.03
583.74
-0.59%
1,622,005
05/21/2026
557.00
590.13
555.71
587.23
+5.85%
1,547,399
05/20/2026
554.21
572.39
545.10
554.76
+2.37%
1,985,867
05/19/2026
514.04
542.92
499.01
541.92
+3.32%
2,331,485
05/18/2026
563.49
567.08
516.61
524.53
-5.40%
2,502,747
05/15/2026
570.65
574.20
553.30
554.46
-6.27%
2,423,358
05/14/2026
577.90
591.57
566.00
591.57
+2.37%
1,121,895
05/13/2026
594.00
598.84
562.50
577.90
+0.13%
1,272,676
05/12/2026
567.78
582.00
546.98
577.15
-0.74%
1,603,667
05/11/2026
558.00
593.00
550.49
581.47
+6.09%
2,380,715
05/08/2026
549.00
564.83
538.77
548.11
+1.74%
1,501,585
05/07/2026
564.39
569.00
515.49
538.76
-6.59%
3,546,930
05/06/2026
563.00
583.78
550.06
576.79
+5.88%
2,244,799
05/05/2026
553.63
562.00
539.43
544.75
+1.16%
1,632,380
05/04/2026
540.00
548.20
528.36
538.51
+0.60%
1,198,633
05/01/2026
527.25
550.00
518.58
535.29
+1.46%
1,733,825
04/30/2026
487.97
529.89
486.25
527.58
+10.98%
2,665,446
04/29/2026
480.14
482.54
468.31
475.39
+0.36%
1,830,424
04/28/2026
485.00
493.31
461.07
473.69
-6.45%
3,103,069
04/27/2026
515.82
516.34
485.00
506.34
-2.78%
1,684,287
04/24/2026
514.82
527.50
505.55
520.80
+0.96%
1,418,184
04/23/2026
505.00
527.86
497.09
515.85
+3.38%
2,281,939
04/22/2026
511.50
518.15
467.19
498.97
-1.38%
2,778,042
04/21/2026
507.77
522.50
493.54
505.93
+0.53%
1,804,575
04/20/2026
512.00
517.88
497.62
503.27
-0.82%
1,963,145
04/17/2026
500.47
513.83
495.17
507.43
+2.48%
1,926,270
04/16/2026
476.75
495.40
462.00
495.17
+4.08%
2,298,719
04/15/2026
471.78
481.28
454.34
475.76
+1.83%
3,041,125
04/14/2026
486.75
487.74
458.01
467.19
-2.65%
3,429,530
04/13/2026
493.44
494.60
472.32
479.90
-3.25%
3,048,322
04/10/2026
498.11
508.64
475.22
496.02
+1.77%
2,498,295
04/09/2026
498.91
513.49
473.73
487.38
-1.34%
3,279,788
04/08/2026
475.50
499.39
471.66
494.01
+10.30%
4,110,400
04/07/2026
435.28
449.34
421.30
447.88
+3.14%
1,969,528
04/06/2026
455.45
459.80
432.77
434.26
-3.02%
1,939,070
04/02/2026
400.98
453.00
400.00
447.76
+7.79%
3,617,746
04/01/2026
401.71
421.99
399.82
415.39
+7.00%
2,677,105