Ciena Corporation CIEN
Open calendar →Ciena Corporation Common Stock · Company · NYSE
USD closing-price chart (daily close from yfinance · Last year)
USD 84.36 → 397.16 · 370.8%
Numbered dotted lines mark the filtered filings under Announcement Events below.
Price & SEC Filing History 22 Jul 2025 — 23 Jul 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.
Date
Open
High
Low
Close
Volume
No data yet
396.9500
411.0100
396.9500
397.1600
1,752,000
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
16 · 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
15 · 8-K
Pre-market · 07:08 ET
8-K ↗
Weekend
Weekend
512.3100
525.1500
488.1400
488.2100
4,195,400
14 · 10-Q
After-hours · 16:06 ET
10-Q ↗
552.3900
552.3900
491.0000
535.6300
7,611,800
13 · 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
12 · 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
11 · 10-Q
After-hours · 16:01 ET
10-Q ↗
312.0100
315.5000
278.3900
299.3000
7,847,000
10 · 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
9 · DEFA14A
After market open · 11:10 ET
DEFA14A ↗
8 · 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
7 · 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
6 · 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
5 · 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
170.4400
173.4700
159.5600
164.4800
3,091,100
172.8100
174.0800
169.1100
169.7100
2,083,700
173.6300
177.7900
171.9500
173.1200
2,010,800
Weekend
Weekend
169.4800
173.0600
165.0800
170.9500
1,965,600
170.4300
176.8800
170.0500
170.7800
2,615,900
168.9900
172.9200
166.8900
168.7100
2,401,800
161.5500
167.2800
159.0100
164.8200
1,738,600
164.0000
167.3400
160.1000
164.7800
2,884,700
Weekend
Weekend
165.2400
165.2400
153.2700
155.9400
3,059,300
158.1300
164.0200
157.1600
163.6100
2,366,000
152.7000
159.8500
152.5400
159.6600
1,981,300
4 · 8-K
After-hours · 16:24 ET
8-K ↗
154.0000
155.2000
147.3600
151.4800
2,718,500
152.6800
159.4300
151.6400
153.2500
3,005,500
Weekend
Weekend
153.5500
154.0100
150.2700
151.4500
1,762,400
153.2300
153.6100
148.0200
152.6600
2,280,200
144.2400
151.8900
143.1900
151.7200
3,107,500
144.5200
146.5300
143.7600
145.6700
2,088,200
145.8100
146.5100
143.0000
144.1200
2,318,600
Weekend
Weekend
140.2400
143.7900
138.1200
141.9300
3,795,900
134.5100
137.6100
133.6700
137.1700
2,808,100
139.3800
140.2100
136.0400
138.4200
2,367,300
139.8500
141.4300
138.1300
139.4800
2,846,200
3 · 8-K
After market open · 09:37 ET
8-K ↗
138.0600
139.4400
136.3300
139.3100
2,613,100
Weekend
Weekend
137.7100
138.9600
136.0700
138.3700
3,153,500
138.7000
139.7400
137.4500
138.0400
2,048,100
139.5500
139.5500
132.9300
136.3800
3,196,700
136.3900
137.6400
133.9400
137.4800
2,907,000
132.0000
138.3500
131.4500
135.9000
3,375,500
Weekend
Weekend
132.2200
133.2800
130.1300
131.2800
2,778,000
131.0000
134.3100
130.0000
132.5000
3,381,100
123.8100
131.4000
123.6500
129.8600
3,431,800
119.0000
122.2700
117.9400
122.1900
2,131,800
118.4500
120.1800
117.0200
119.0000
2,593,300
Weekend
Weekend
115.8600
117.0600
113.6600
116.6900
4,410,300
2 · 10-Q
After-hours · 16:05 ET
10-Q ↗
115.0000
122.0000
110.9000
116.9200
11,296,500
1 · 8-K
Pre-market · 07:02 ET
8-K ↗
93.7400
95.2100
92.4600
94.8200
5,741,200
92.6800
93.6100
90.0000
93.5900
2,702,400
No trading
Weekend
Weekend
97.2500
97.5500
93.4700
93.9700
2,230,600
93.0000
98.8800
92.8700
97.8900
2,790,400
91.4300
94.0400
91.4300
92.7400
1,657,600
91.0900
92.5200
90.6500
91.4900
1,187,200
90.1200
91.1200
89.4100
90.7400
1,663,800
Weekend
Weekend
87.5400
90.4500
87.2500
89.8100
1,971,300
86.3400
87.6300
86.0000
87.3600
1,496,000
87.8700
88.0000
84.4100
86.6400
1,889,700
91.0100
91.3700
88.4500
88.7700
1,593,800
90.4600
92.2100
90.1000
91.9300
1,077,600
Weekend
Weekend
90.9400
91.7000
89.5200
90.8700
1,478,800
92.8800
93.4000
89.0900
91.4200
2,612,600
97.0000
98.1900
94.0800
94.6600
1,547,900
93.5800
96.5600
93.5000
96.4000
1,488,500
94.7500
95.7100
93.1600
93.3800
1,409,300
Weekend
Weekend
96.0000
96.4300
94.6300
95.0600
2,021,400
95.0700
95.8000
93.4400
95.1800
1,216,400
92.6100
94.3400
91.6500
94.3100
1,363,500
93.0200
93.1200
90.4700
91.4900
1,470,700
89.4200
92.9000
88.6500
92.6700
1,434,300
Weekend
Weekend
90.1600
90.6800
87.3000
88.6300
2,151,900
94.0100
95.5100
92.7900
92.8400
1,980,300
91.4000
93.0100
91.1700
92.9500
1,426,200
92.0000
93.4800
90.8100
91.0700
2,215,500
88.7500
90.7600
88.2500
90.5500
1,136,500
Weekend
Weekend
87.6800
88.9200
86.8400
88.6000
1,116,000
87.0100
87.6700
86.3800
87.1900
1,708,700
84.9500
87.2900
84.3800
86.7500
1,503,200
85.7500
85.7700
83.2000
84.3600
1,680,300
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.