CIEN · NYSE
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Aug 4, 2026 | $419.08 | $427.00 | $405.01 | $411.13 | +5.21% | 2.07M |
| Aug 3, 2026 | $365.00 | $391.87 | $355.00 | $390.76 | +3.64% | 1.24M |
| Jul 31, 2026 | $393.98 | $401.00 | $374.38 | $377.05 | +1.34% | 1.95M |
| Jul 30, 2026 | $359.27 | $373.09 | $355.00 | $372.07 | +12.62% | 2.46M |
| Jul 29, 2026 | $349.64 | $350.80 | $323.29 | $330.37 | -5.75% | 2.63M |
| Jul 28, 2026 | $354.90 | $357.47 | $328.80 | $350.51 | -7.09% | 4.18M |
| Jul 27, 2026 | $388.19 | $388.19 | $360.00 | $377.27 | -3.50% | 1.51M |
| Jul 24, 2026 | $401.85 | $408.74 | $386.25 | $390.96 | -4.07% | 1.49M |
| Jul 23, 2026 | $394.10 | $415.80 | $394.10 | $407.53 | +2.61% | 1.80M |
| Jul 22, 2026 | $396.95 | $411.01 | $396.87 | $397.16 | -2.83% | 1.76M |
| Jul 21, 2026 | $397.70 | $412.04 | $396.55 | $408.73 | +7.91% | 2.04M |
| Jul 20, 2026 | $375.01 | $394.56 | $375.00 | $378.77 | +1.16% | 1.76M |
| Jul 17, 2026 | $370.99 | $388.61 | $359.01 | $374.41 | -3.70% | 3.37M |
| Jul 16, 2026 | $404.79 | $410.31 | $386.65 | $388.81 | -7.09% | 2.60M |
| Jul 15, 2026 | $451.01 | $451.01 | $404.40 | $418.46 | -6.37% | 1.66M |
| Jul 14, 2026 | $460.88 | $466.66 | $446.25 | $446.93 | +0.33% | 1.25M |
| Jul 13, 2026 | $448.67 | $461.45 | $440.51 | $445.44 | -3.32% | 1.22M |
| Jul 10, 2026 | $453.00 | $464.42 | $450.00 | $460.72 | -0.35% | 1.28M |
| Jul 9, 2026 | $460.60 | $485.69 | $459.81 | $462.34 | +4.85% | 2.05M |
| Jul 8, 2026 | $419.22 | $442.14 | $415.70 | $440.97 | +5.27% | 1.83M |
| Jul 7, 2026 | $418.77 | $425.96 | $404.43 | $418.91 | -3.44% | 1.82M |
| Jul 6, 2026 | $426.99 | $446.40 | $422.30 | $433.83 | +2.69% | 1.33M |
| Jul 2, 2026 | $454.16 | $459.73 | $414.17 | $422.46 | -8.65% | 2.16M |
| Jul 1, 2026 | $466.20 | $482.16 | $459.23 | $462.44 | -5.73% | 2.04M |
| Jun 30, 2026 | $478.93 | $491.79 | $472.59 | $490.56 | +2.43% | 2.45M |
| Jun 29, 2026 | $476.10 | $482.46 | $435.12 | $478.93 | -0.12% | 4.07M |
| Jun 26, 2026 | $466.33 | $493.26 | $457.70 | $479.50 | -1.07% | 8.74M |
| Jun 25, 2026 | $477.42 | $494.53 | $451.56 | $484.69 | +4.57% | 3.56M |
| Jun 24, 2026 | $449.36 | $480.59 | $440.70 | $463.51 | +0.80% | 2.80M |
| Jun 23, 2026 | $437.00 | $467.89 | $432.49 | $459.85 | -0.10% | 3.82M |
| Jun 22, 2026 | $437.83 | $461.50 | $430.51 | $460.33 | +7.50% | 3.86M |
| Jun 18, 2026 | $450.80 | $451.60 | $425.08 | $428.22 | -1.95% | 4.30M |
| Jun 17, 2026 | $433.00 | $449.00 | $424.33 | $436.72 | +1.49% | 2.88M |
| Jun 16, 2026 | $458.73 | $463.55 | $426.62 | $430.30 | -7.14% | 4.21M |
| Jun 15, 2026 | $469.95 | $479.51 | $447.63 | $463.41 | +3.91% | 3.96M |
| Jun 12, 2026 | $445.22 | $458.47 | $440.71 | $445.98 | +0.17% | 2.67M |
| Jun 11, 2026 | $441.66 | $451.10 | $430.82 | $445.22 | +2.43% | 3.00M |
| Jun 10, 2026 | $442.00 | $450.78 | $424.45 | $434.65 | -1.07% | 3.87M |
| Jun 9, 2026 | $465.91 | $467.60 | $417.34 | $439.34 | -5.86% | 7.86M |
| Jun 8, 2026 | $489.78 | $493.09 | $457.79 | $466.67 | -4.41% | 5.64M |
| Jun 5, 2026 | $512.31 | $525.15 | $488.14 | $488.21 | -8.85% | 4.20M |
| Jun 4, 2026 | $552.39 | $552.39 | $491.00 | $535.63 | -13.66% | 7.61M |
| Jun 3, 2026 | $628.51 | $637.51 | $609.79 | $620.37 | -1.06% | 2.65M |
| Jun 2, 2026 | $583.58 | $629.61 | $581.63 | $627.00 | +10.08% | 2.73M |
| Jun 1, 2026 | $559.52 | $579.97 | $552.59 | $569.61 | -1.83% | 2.89M |
| May 29, 2026 | $566.02 | $582.47 | $539.57 | $580.23 | +1.76% | 3.87M |
| May 28, 2026 | $598.80 | $604.43 | $561.30 | $570.18 | -2.04% | 1.82M |
| May 27, 2026 | $605.54 | $605.54 | $576.88 | $582.08 | -3.37% | 1.75M |
| May 26, 2026 | $591.00 | $605.61 | $575.51 | $602.39 | +3.19% | 1.41M |
| May 22, 2026 | $599.00 | $599.50 | $574.03 | $583.74 | -0.59% | 1.62M |
| May 21, 2026 | $557.00 | $590.13 | $555.71 | $587.23 | +5.85% | 1.55M |
| May 20, 2026 | $554.21 | $572.39 | $545.10 | $554.76 | +2.37% | 1.99M |
| May 19, 2026 | $514.04 | $542.92 | $499.01 | $541.92 | +3.32% | 2.33M |
| May 18, 2026 | $563.49 | $567.08 | $516.61 | $524.53 | -5.40% | 2.50M |
| May 15, 2026 | $570.65 | $574.20 | $553.30 | $554.46 | -6.27% | 2.42M |
| May 14, 2026 | $577.90 | $591.57 | $566.00 | $591.57 | +2.37% | 1.12M |
| May 13, 2026 | $594.00 | $598.84 | $562.50 | $577.90 | +0.13% | 1.27M |
| May 12, 2026 | $567.78 | $582.00 | $546.98 | $577.15 | -0.74% | 1.60M |
| May 11, 2026 | $558.00 | $593.00 | $550.49 | $581.47 | +6.09% | 2.38M |
| May 8, 2026 | $549.00 | $564.83 | $538.77 | $548.11 | — | 1.50M |