
CIEN · NYSE
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $326.00 | $332.72 | $313.27 | $320.72 | -8.22% | 3.10M |
| Oct 29, 2026 | $348.60 | $361.96 | $340.01 | $349.45 | -3.79% | 2.81M |
| Oct 28, 2026 | $357.01 | $368.24 | $351.60 | $363.21 | +3.43% | 2.79M |
| Oct 27, 2026 | $344.09 | $353.10 | $336.30 | $351.15 | +4.53% | 2.69M |
| Oct 26, 2026 | $324.06 | $345.48 | $318.77 | $335.93 | +4.89% | 2.84M |
| Oct 23, 2026 | $325.95 | $327.40 | $313.45 | $320.26 | -0.74% | 1.97M |
| Oct 22, 2026 | $343.48 | $346.29 | $320.70 | $322.64 | -10.71% | 3.94M |
| Oct 21, 2026 | $354.56 | $363.97 | $349.87 | $361.34 | +5.67% | 3.01M |
| Oct 20, 2026 | $336.70 | $350.35 | $328.88 | $341.95 | -0.65% | 1.95M |
| Oct 19, 2026 | $348.31 | $354.45 | $338.79 | $344.20 | +3.45% | 3.06M |
| Oct 16, 2026 | $350.95 | $354.60 | $330.99 | $332.73 | -6.67% | 3.20M |
| Oct 15, 2026 | $342.50 | $357.83 | $333.15 | $356.52 | -0.86% | 3.49M |
| Oct 14, 2026 | $393.88 | $393.88 | $356.78 | $359.60 | -10.19% | 3.32M |
| Oct 13, 2026 | $393.33 | $401.87 | $381.64 | $400.40 | -1.14% | 2.74M |
| Oct 12, 2026 | $443.53 | $445.95 | $400.20 | $405.01 | -9.95% | 3.33M |
| Oct 9, 2026 | $436.00 | $454.73 | $424.02 | $449.77 | +5.60% | 3.78M |
| Oct 8, 2026 | $436.15 | $443.99 | $421.11 | $425.93 | -4.60% | 3.70M |
| Oct 7, 2026 | $428.98 | $448.00 | $422.30 | $446.45 | +0.63% | 3.37M |
| Oct 6, 2026 | $393.58 | $446.37 | $392.00 | $443.65 | +13.85% | 6.40M |
| Oct 5, 2026 | $393.77 | $397.47 | $382.50 | $389.69 | -0.42% | 2.47M |
| Oct 2, 2026 | $385.00 | $395.96 | $377.03 | $391.34 | +3.22% | 2.52M |
| Oct 1, 2026 | $355.19 | $381.00 | $350.68 | $379.14 | +7.77% | 2.57M |
| Sep 30, 2026 | $354.92 | $359.98 | $340.52 | $351.82 | -0.87% | 2.66M |
| Sep 29, 2026 | $350.16 | $356.21 | $344.80 | $354.92 | +3.12% | 2.23M |
| Sep 28, 2026 | $352.42 | $356.99 | $339.33 | $344.19 | -3.56% | 1.83M |
| Sep 25, 2026 | $363.00 | $366.43 | $355.01 | $356.91 | -0.42% | 1.62M |
| Sep 24, 2026 | $350.40 | $363.46 | $346.56 | $358.43 | +0.71% | 1.42M |
| Sep 23, 2026 | $368.64 | $369.00 | $351.53 | $355.91 | -3.43% | 1.85M |
| Sep 22, 2026 | $364.31 | $376.74 | $363.14 | $368.56 | +0.71% | 2.41M |
| Sep 21, 2026 | $365.05 | $367.62 | $356.46 | $365.96 | +4.92% | 2.89M |
| Sep 18, 2026 | $355.87 | $358.00 | $338.25 | $348.80 | +1.32% | 4.87M |
| Sep 17, 2026 | $350.60 | $375.70 | $341.93 | $344.25 | +1.10% | 3.77M |
| Sep 16, 2026 | $350.09 | $375.20 | $327.50 | $340.50 | +1.85% | 3.96M |
| Sep 15, 2026 | $324.44 | $335.97 | $320.50 | $334.33 | +4.60% | 2.80M |
| Sep 14, 2026 | $326.98 | $332.32 | $318.43 | $319.64 | -8.55% | 2.21M |
| Sep 11, 2026 | $336.92 | $355.19 | $336.44 | $349.54 | +4.48% | 1.98M |
| Sep 10, 2026 | $333.00 | $348.40 | $328.36 | $334.56 | -1.02% | 2.55M |
| Sep 9, 2026 | $341.90 | $348.00 | $337.16 | $338.00 | -0.96% | 1.81M |
| Sep 8, 2026 | $327.42 | $349.78 | $325.69 | $341.29 | +6.32% | 3.23M |
| Sep 4, 2026 | $321.67 | $328.85 | $315.73 | $321.00 | +1.12% | 3.34M |
| Sep 3, 2026 | $354.49 | $358.76 | $311.60 | $317.46 | -10.36% | 7.54M |
| Sep 2, 2026 | $357.25 | $359.60 | $348.86 | $354.16 | -1.71% | 2.87M |
| Sep 1, 2026 | $376.89 | $381.60 | $356.40 | $360.33 | -5.87% | 2.26M |
| Aug 31, 2026 | $378.44 | $382.94 | $370.77 | $382.80 | +1.15% | 1.83M |
| Aug 28, 2026 | $400.42 | $400.50 | $376.64 | $378.44 | -5.35% | 1.32M |
| Aug 27, 2026 | $411.53 | $418.72 | $395.50 | $399.85 | -1.03% | 1.21M |
| Aug 26, 2026 | $387.23 | $406.44 | $387.23 | $404.03 | +4.22% | 1.19M |
| Aug 25, 2026 | $386.33 | $388.73 | $378.94 | $387.66 | +4.22% | 1.19M |
| Aug 24, 2026 | $386.26 | $386.26 | $362.48 | $371.95 | -6.02% | 1.78M |
| Aug 21, 2026 | $396.00 | $403.72 | $382.75 | $395.79 | +0.84% | 1.24M |
| Aug 20, 2026 | $400.35 | $404.35 | $389.10 | $392.48 | -1.75% | 1.45M |
| Aug 19, 2026 | $415.50 | $415.50 | $392.67 | $399.47 | -1.50% | 1.77M |
| Aug 18, 2026 | $421.59 | $427.74 | $391.77 | $405.54 | -8.90% | 3.05M |
| Aug 17, 2026 | $438.38 | $458.00 | $427.45 | $445.18 | +3.83% | 2.49M |
| Aug 14, 2026 | $441.61 | $446.15 | $422.49 | $428.77 | -3.17% | 2.52M |
| Aug 13, 2026 | $430.32 | $462.69 | $427.00 | $442.79 | +2.49% | 2.91M |
| Aug 12, 2026 | $414.51 | $446.36 | $409.24 | $432.05 | +11.49% | 3.99M |
| Aug 11, 2026 | $388.84 | $394.99 | $384.19 | $387.53 | -0.04% | 1.53M |
| Aug 10, 2026 | $420.00 | $420.00 | $387.28 | $387.70 | -5.99% | 2.02M |
| Aug 7, 2026 | $411.04 | $420.00 | $396.89 | $412.39 | — | 1.89M |