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Ciena Corp (CIEN) stock

CIENNYSETelephone & Telegraph ApparatusFiscal year ends October 31
Financials through Q3 FY2026, quarter ended Aug 1, 2026Last filing: 10-Q on Sep 3, 2026Score 12/30116% above fair value
$320.72−28.73 (-8.22%)

Close on Oct 30, 2026Market cap $45.48BP/E 71.6Yield –

Price history

Ciena share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$320.72
-8.22% on the day
52-week range
$168.22 – $637.51
-49.7% from the high
Change over 52 weeks
+69.7%
From $188.96 on Oct 30, 2025
Average volume
2.58M
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$324.06$368.24$313.27$320.72+0.14%14,224,820
Oct 19, 2026$348.31$363.97$313.45$320.26-3.75%13,933,330
Oct 12, 2026$443.53$445.95$330.99$332.73-26.02%16,075,590
Oct 5, 2026$393.77$454.73$382.50$449.77+14.93%19,724,714
Sep 28, 2026$352.42$395.96$339.33$391.34+9.65%11,813,777
Sep 21, 2026$365.05$376.74$346.56$356.91+2.33%10,187,540
Sep 14, 2026$326.98$375.70$318.43$348.80-0.21%17,603,076
Sep 8, 2026$327.42$355.19$325.69$349.54+8.89%9,571,839
Aug 31, 2026$378.44$382.94$311.60$321.00-15.18%17,841,567
Aug 24, 2026$386.26$418.72$362.48$378.44-4.38%6,692,734
Aug 17, 2026$438.38$458.00$382.75$395.79-7.69%10,007,376
Aug 10, 2026$420.00$462.69$384.19$428.77+3.97%12,977,761
Aug 3, 2026$365.00$427.00$355.00$412.39+9.37%8,328,015
Jul 27, 2026$388.19$401.00$323.29$377.05-3.56%12,741,486
Jul 20, 2026$375.01$415.80$375.00$390.96+4.42%8,842,437
Jul 13, 2026$448.67$466.66$359.01$374.41-18.73%10,091,929
Jul 6, 2026$426.99$485.69$404.43$460.72+9.06%8,300,341
Jun 29, 2026$476.10$491.79$414.17$422.46-11.90%10,718,953
Jun 22, 2026$437.83$494.53$430.51$479.50+11.98%22,777,359
Jun 15, 2026$469.95$479.51$424.33$428.22-3.98%15,347,649
Jun 8, 2026$489.78$493.09$417.34$445.98-8.65%23,034,661
Jun 1, 2026$559.52$637.51$488.14$488.21-15.86%20,081,344
May 26, 2026$591.00$605.61$539.57$580.23-0.60%8,853,447
May 18, 2026$563.49$599.50$499.01$583.74+5.28%9,990,614
May 11, 2026$558.00$598.84$546.98$554.46+1.16%8,802,312
May 4, 2026$540.00$583.78$515.49$548.11+2.39%10,124,327
Apr 27, 2026$515.82$550.00$461.07$535.29+2.78%11,017,004
Apr 20, 2026$512.00$527.86$467.19$520.80+2.63%10,247,390
Apr 13, 2026$493.44$513.83$454.34$507.43+2.30%13,744,035
Apr 6, 2026$455.45$513.49$421.30$496.02+10.78%13,797,760
Mar 30, 2026$411.00$453.00$361.70$447.76+11.49%12,828,201
Mar 23, 2026$399.40$446.89$387.40$401.61+4.62%15,834,698
Mar 16, 2026$345.00$419.80$344.99$383.89+13.79%20,927,283
Mar 9, 2026$289.49$353.25$287.25$337.38+14.69%13,221,728
Mar 2, 2026$353.76$364.05$278.39$294.17-15.64%20,026,215
Feb 23, 2026$332.86$365.90$326.76$348.70+4.11%12,511,830
Feb 17, 2026$297.91$340.27$286.81$334.95+10.21%9,323,171
Feb 9, 2026$270.70$308.81$266.61$303.92+12.02%16,063,838
Feb 2, 2026$247.93$285.97$238.57$271.32+7.75%48,085,225
Jan 26, 2026$230.00$269.90$225.71$251.81+9.89%11,025,496
Jan 20, 2026$229.15$246.21$220.52$229.14-5.87%9,524,273
Jan 12, 2026$227.59$253.90$223.50$243.42+5.58%9,519,840
Jan 5, 2026$250.34$261.13$216.07$230.56-6.30%17,239,285
Dec 29, 2025$237.26$248.50$230.13$246.06+1.81%6,074,317
Dec 22, 2025$235.00$243.00$230.40$241.68+4.92%6,393,670
Dec 15, 2025$220.84$231.35$201.70$230.34+5.45%15,365,038
Dec 8, 2025$205.00$248.00$203.00$218.44+8.29%24,157,551
Dec 1, 2025$194.49$209.19$186.39$201.71-1.22%13,175,263
Nov 24, 2025$183.05$204.59$182.18$204.21+14.56%19,436,209
Nov 17, 2025$190.80$202.60$168.22$178.26-7.02%17,120,178
Nov 10, 2025$206.80$214.17$183.08$191.71-3.79%17,948,118
Nov 3, 2025$193.34$203.40$177.41$199.26+4.92%13,714,317

Seasonality

CIEN return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average2.6%5.5%-3.1%2.7%3.4%1.2%3.3%2.1%-1.6%2.9%5.9%11.8%
Months up7 of 106 of 105 of 104 of 107 of 106 of 107 of 105 of 103 of 105 of 108 of 97 of 9
20267.7%38.5%11.3%35.9%10.0%-15.5%-23.1%1.5%-8.1%-8.8%
20252.7%-8.7%-24.1%11.1%19.2%1.6%14.2%1.2%55.0%30.4%7.5%14.5%
202417.8%7.5%-13.2%-6.5%4.2%0.0%9.5%9.3%6.8%3.1%9.8%21.6%
20232.0%-7.3%8.9%-12.3%1.5%-9.1%-0.7%18.4%-5.4%-10.7%8.6%-1.8%
2022-13.8%3.2%-11.4%-9.0%-7.9%-10.1%12.9%-1.7%-20.3%18.5%-6.1%13.4%
20211.0%-2.3%4.9%-7.8%4.8%7.6%2.2%-1.7%-10.1%5.7%10.9%27.8%
2020-4.7%-5.5%3.5%16.2%19.5%-2.0%9.9%-4.6%-30.1%-0.8%13.7%18.0%
201912.3%12.0%-12.5%2.7%-8.9%17.7%9.9%-9.5%-4.2%-5.4%2.3%12.5%
20181.7%8.9%11.8%-0.6%-10.5%15.0%-4.2%24.3%-1.1%0.1%4.4%4.0%
2017-0.3%8.2%-10.4%-3.0%2.5%6.6%2.9%-16.1%1.7%-3.2%2.3%-3.8%