NASDAQ : CERT
-$0.35 (-4.81%)
| Date | Opening Price | Closing Price | %Chg | Volume |
|---|---|---|---|---|
| 2026-07-17 | $7.18 | $6.93 | -3.48% | 2.14M |
| 2026-07-16 | $7.12 | $7.28 | 2.25% | 4.64M |
| 2026-07-15 | $6.80 | $7.06 | 3.82% | 2.59M |
| 2026-07-14 | $6.65 | $6.67 | 0.30% | 2.22M |
| 2026-07-13 | $6.83 | $6.79 | -0.59% | 1.97M |
| 2026-07-10 | $6.87 | $6.77 | -1.46% | 5.39M |
| 2026-07-09 | $6.54 | $6.79 | 3.82% | 2.74M |
| 2026-07-08 | $7.02 | $6.54 | -6.84% | 4.62M |
| 2026-07-07 | $7.23 | $7.17 | -0.83% | 4.07M |
| 2026-07-06 | $6.92 | $7.13 | 3.03% | 6.48M |
| 2026-07-02 | $6.74 | $6.97 | 3.41% | 3.89M |
| 2026-07-01 | $6.66 | $6.73 | 1.05% | 4.53M |
| 2026-06-30 | $6.33 | $6.55 | 3.48% | 5.11M |
| 2026-06-29 | $5.87 | $6.36 | 8.35% | 4.88M |
| 2026-06-26 | $5.41 | $5.84 | 7.95% | 17.57M |
| 2026-06-25 | $5.48 | $5.49 | 0.18% | 2.95M |
| 2026-06-24 | $5.50 | $5.43 | -1.27% | 2.39M |
| 2026-06-23 | $5.38 | $5.40 | 0.37% | 2.64M |
| 2026-06-22 | $5.48 | $5.34 | -2.55% | 4.3M |
| 2026-06-18 | $5.73 | $5.54 | -3.32% | 7.91M |
| 2026-06-17 | $6.04 | $6.03 | -0.17% | 4.21M |
| 2026-06-16 | $5.24 | $6.05 | 15.46% | 7.11M |
| 2026-06-15 | $5.28 | $5.21 | -1.33% | 4.21M |
| 2026-06-12 | $5.24 | $5.20 | -0.76% | 3.27M |
| 2026-06-11 | $5.12 | $5.27 | 2.93% | 5.14M |
| 2026-06-10 | $5.13 | $5.18 | 0.97% | 3.2M |
| 2026-06-09 | $5.22 | $5.18 | -0.77% | 4.34M |
| 2026-06-08 | $5.41 | $5.22 | -3.51% | 6.07M |
| 2026-06-05 | $5.56 | $5.37 | -3.42% | 5.16M |
| 2026-06-04 | $5.69 | $5.61 | -1.41% | 3.76M |
| 2026-06-03 | $5.56 | $5.60 | 0.72% | 3.39M |
| 2026-06-02 | $6.04 | $5.62 | -6.95% | 2.18M |
| 2026-06-01 | $5.81 | $6.12 | 5.34% | 3.23M |
| 2026-05-29 | $5.72 | $5.82 | 1.75% | 4.01M |
| 2026-05-28 | $5.34 | $5.67 | 6.18% | 3.51M |
| 2026-05-27 | $5.22 | $5.35 | 2.49% | 4.52M |
| 2026-05-26 | $5.22 | $5.21 | -0.19% | 4.43M |
| 2026-05-22 | $5.14 | $5.24 | 1.95% | 3.82M |
| 2026-05-21 | $4.65 | $5.17 | 11.18% | 5.79M |
| 2026-05-20 | $4.57 | $4.67 | 2.19% | 3.9M |
| 2026-05-19 | $4.61 | $4.59 | -0.43% | 2.92M |
| 2026-05-18 | $4.48 | $4.56 | 1.79% | 3.06M |
| 2026-05-15 | $4.61 | $4.48 | -2.82% | 3.04M |
| 2026-05-14 | $4.81 | $4.61 | -4.16% | 5.55M |
| 2026-05-13 | $5.05 | $4.79 | -5.15% | 5.35M |
| 2026-05-12 | $5.24 | $5.09 | -2.86% | 5.38M |
| 2026-05-11 | $5.22 | $5.13 | -1.72% | 8.08M |
| 2026-05-08 | $6.29 | $6.31 | 0.32% | 4.85M |
| 2026-05-07 | $6.34 | $6.31 | -0.47% | 2M |
| 2026-05-06 | $6.14 | $6.26 | 1.95% | 2.15M |
| 2026-05-05 | $6.17 | $6.18 | 0.16% | 1.71M |
| 2026-05-04 | $6.22 | $6.19 | -0.48% | 1.92M |
| 2026-05-01 | $6.14 | $6.18 | 0.65% | 2.63M |
| 2026-04-30 | $5.88 | $6.13 | 4.25% | 2.78M |
| 2026-04-29 | $6.15 | $5.90 | -4.07% | 2.54M |
| 2026-04-28 | $6.20 | $6.14 | -0.97% | 2.78M |
| 2026-04-27 | $6.27 | $6.24 | -0.48% | 2.15M |
| 2026-04-24 | $6.00 | $6.32 | 5.33% | 3.3M |
| 2026-04-23 | $6.31 | $6.00 | -4.91% | 3.33M |
| 2026-04-22 | $6.28 | $6.38 | 1.59% | 3.19M |
| 2026-04-21 | $6.22 | $6.20 | -0.32% | 2.26M |
| 2026-04-20 | $6.18 | $6.19 | 0.16% | 2.09M |
| 2026-04-17 | $6.22 | $6.22 | 0.00% | 2.49M |
| 2026-04-16 | $6.18 | $6.16 | -0.32% | 4.24M |
| 2026-04-15 | $5.83 | $6.15 | 5.49% | 2.2M |
| 2026-04-14 | $5.82 | $5.82 | 0.00% | 2.22M |
| 2026-04-13 | $5.53 | $5.79 | 4.70% | 3.29M |
| 2026-04-10 | $5.47 | $5.55 | 1.46% | 4.09M |
| 2026-04-09 | $5.36 | $5.41 | 0.93% | 4.46M |
| 2026-04-08 | $5.81 | $5.43 | -6.54% | 3.77M |
| 2026-04-07 | $5.42 | $5.62 | 3.69% | 3.07M |
| 2026-04-06 | $5.46 | $5.46 | 0.00% | 5.87M |
| 2026-04-02 | $5.41 | $5.41 | 0.00% | 6.25M |
| 2026-04-01 | $5.78 | $5.50 | -4.84% | 5.83M |
| 2026-03-31 | $5.78 | $5.70 | -1.38% | 10M |
| 2026-03-30 | $5.80 | $5.68 | -2.07% | 7.19M |
| 2026-03-27 | $6.07 | $5.75 | -5.27% | 4.12M |
| 2026-03-26 | $6.14 | $6.14 | 0.00% | 3.96M |
| 2026-03-25 | $6.34 | $6.10 | -3.79% | 3.42M |
| 2026-03-24 | $6.28 | $6.25 | -0.48% | 3.98M |
| 2026-03-23 | $6.16 | $6.35 | 3.08% | 5.2M |
| 2026-03-20 | $6.37 | $6.15 | -3.45% | 6.49M |
| 2026-03-19 | $6.43 | $6.38 | -0.78% | 3.25M |
| 2026-03-18 | $6.59 | $6.50 | -1.37% | 3.35M |
| 2026-03-17 | $6.51 | $6.63 | 1.84% | 3.56M |
| 2026-03-16 | $6.54 | $6.49 | -0.76% | 4.38M |
| 2026-03-13 | $6.58 | $6.65 | 1.06% | 4.27M |
| 2026-03-12 | $6.63 | $6.56 | -1.06% | 5.05M |
| 2026-03-11 | $6.93 | $6.66 | -3.90% | 3.33M |
| 2026-03-10 | $7.06 | $6.93 | -1.84% | 3.12M |