Ciena Corporation (CIEN)

Historical Shares Outstanding

Current Count

146.3M

Financial Fundamentals

CIEN • Quarterly Data • 5Y View

Share Count History

Date	Shares Out. (M)	Change (M)	Change %
2026-05-02	146.3	0.5	+0.35%
2026-01-31	145.8	0.3	+0.23%
2025-11-01	145.5	1.0	+0.67%
2025-08-02	144.5	-0.5	-0.33%
2025-05-03	145.0	-1.0	-0.67%
2025-02-01	145.9	-0.0	-0.01%
2024-11-02	146.0	0.6	+0.41%
2024-07-27	145.4	0.4	+0.31%
2024-04-27	144.9	-0.9	-0.64%
2024-01-27	145.8	-2.0	-1.38%
2023-10-31	147.9	-2.1	-1.39%
2023-07-29	150.0	-0.2	-0.11%
2023-04-29	150.1	0.6	+0.40%
2023-01-28	149.6	0.4	+0.30%
2022-10-31	149.1	-1.4	-0.90%
2022-07-30	150.5	-2.9	-1.88%
2022-04-30	153.3	-2.5	-1.58%
2022-01-29	155.8	-0.9	-0.56%
2021-10-31	156.7	-0.1	-0.04%
2021-07-31	156.7	-0.1	-0.08%
2021-05-01	156.9	0.3	+0.19%
2021-01-30	156.6	0.0	+0.01%
2020-10-31	156.6	0.2	+0.16%
2020-08-01	156.3	1.2	+0.76%
2020-05-02	155.1	-0.6	-0.38%
2020-01-31	155.7	-0.9	-0.56%
2019-10-31	156.6	-0.8	-0.54%
2019-07-31	157.5	-0.8	-0.53%
2019-04-30	158.3	0.1	+0.07%
2019-01-31	158.2	0.4	+0.27%
2018-10-31	157.7	-2.3	-1.41%
2018-07-31	160.0	12.0	+8.13%
2018-04-30	148.0	4.1	+2.81%
2018-01-31	143.9	-14.9	-9.36%
2017-10-31	158.8	-13.3	-7.74%
2017-07-31	172.1	6.8	+4.14%
2017-04-30	165.3	23.1	+16.24%
2017-01-31	142.2	-23.1	-13.98%
2016-10-31	165.3	-4.1	-2.39%
2016-07-31	169.3	30.5	+21.93%
2016-04-30	138.9	2.2	+1.62%
2016-01-31	136.7	2.6	+1.92%
2015-10-31	134.1	0.9	+0.65%
2015-08-01	133.2	5.2	+4.07%
2015-05-02	128.0	20.2	+18.78%
2015-01-31	107.8	0.8	+0.79%
2014-10-31	106.9	-13.9	-11.49%
2014-07-31	120.8	15.4	+14.56%
2014-04-30	105.5	0.9	+0.91%
2014-01-31	104.5	1.0	+0.94%
2013-10-31	103.5	0.8	+0.79%
2013-07-31	102.7	0.8	+0.78%
2013-04-30	101.9	0.7	+0.70%
2013-01-31	101.2	0.7	+0.69%
2012-10-31	100.5	1.0	+0.98%
2012-07-31	99.5	0.5	+0.55%
2012-04-30	99.0	0.9	+0.93%
2012-01-31	98.1	0.0	0.00%
2011-10-31	98.1	1.8	+1.82%
2011-07-31	96.3	1.0	+1.00%
2011-04-30	95.4	0.9	+0.91%
2011-01-31	94.5	0.0	0.00%
2010-10-31	94.5	1.6	+1.71%
2010-07-31	92.9	0.3	+0.32%
2010-04-30	92.6	0.3	+0.32%
2010-01-31	92.3	0.0	0.00%
2009-10-31	92.3	1.0	+1.05%
2009-07-31	91.4	0.4	+0.48%
2009-04-30	90.9	0.3	+0.34%
2009-01-31	90.6	0.0	0.00%
2008-10-31	90.6	-21.1	-18.86%
2008-07-31	111.7	0.9	+0.82%
2008-04-30	110.8	1.8	+1.62%
2008-01-31	109.0	22.1	+25.43%
2007-10-31	86.9	-14.7	-14.43%
2007-07-31	101.6	7.8	+8.35%
2007-04-30	93.7	0.5	+0.51%
2007-01-31	93.3	8.3	+9.78%
2006-10-31	85.0	0.8	+0.90%
2006-07-31	84.2	0.7	+0.81%
2006-04-30	83.5	0.5	+0.63%
2006-01-31	83.0	0.0	0.00%
2005-10-31	83.0	0.6	+0.77%
2005-07-31	82.4	0.4	+0.48%
2005-04-30	82.0	0.3	+0.35%
2005-01-31	81.7	0.0	0.00%
2004-10-31	81.7	0.8	+0.94%
2004-07-31	80.9	13.0	+19.16%
2004-04-30	67.9	0.3	+0.48%
2004-01-31	67.6	0.0	0.00%
2003-10-31	67.6	3.1	+4.86%
2003-07-31	64.4	2.4	+3.94%
2003-04-30	62.0	0.2	+0.31%
2003-01-31	61.8	0.0	0.00%
2002-10-31	61.8	8.0	+14.88%
2002-07-31	53.8	6.8	+14.53%
2002-04-30	47.0	0.2	+0.35%
2002-01-31	46.8	0.0	0.00%
2001-10-31	46.8	-1.5	-3.01%
2001-07-31	48.3	4.5	+10.27%
2001-04-30	43.8	0.8	+1.79%
2001-01-31	43.0	2.0	+4.86%
2000-10-31	41.0	-1.8	-4.27%
2000-07-31	42.8	0.1	+0.22%
2000-04-30	42.7	0.5	+1.12%
2000-01-31	42.3	2.8	+7.11%
1999-10-31	39.5	-0.5	-1.33%
1999-07-31	40.0	2.1	+5.64%
1999-04-30	37.9	10.7	+39.51%
1999-01-31	27.1	-5.7	-17.39%
1998-10-31	32.9	2.6	+8.73%
1998-07-31	30.2	-0.8	-2.58%
1998-04-30	31.0	1.2	+3.92%
1998-01-31	29.8	1.4	+5.00%
1997-10-31	28.4	-1.6	-5.24%
1997-07-31	30.0	1.8	+6.52%
1997-04-30	28.2	0.7	+2.42%
1997-01-31	27.5	—	—