C3is Inc. (CISS)
NASDAQ: CISS · Real-Time Price · USD
3.050
-0.140 (-4.39%)
At close: May 15, 2026, 4:00 PM EDT
3.190
+0.140 (4.59%)
After-hours: May 15, 2026, 7:48 PM EDT
C3is Inc. Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 15, 2026 | 3.16 | 3.27 | 3.05 | 3.05 | 3.05 | -4.39% | 28,267 |
| May 14, 2026 | 3.20 | 3.28 | 3.17 | 3.19 | 3.19 | -1.24% | 11,286 |
| May 13, 2026 | 3.27 | 3.27 | 3.18 | 3.23 | 3.23 | -2.42% | 18,074 |
| May 12, 2026 | 3.37 | 3.38 | 3.28 | 3.31 | 3.31 | -0.30% | 11,264 |
| May 11, 2026 | 3.31 | 3.39 | 3.22 | 3.32 | 3.32 | 0.91% | 20,609 |
| May 8, 2026 | 3.33 | 3.37 | 3.23 | 3.29 | 3.29 | -0.90% | 14,198 |
| May 7, 2026 | 3.41 | 3.43 | 3.25 | 3.32 | 3.32 | -4.05% | 32,866 |
| May 6, 2026 | 3.35 | 3.50 | 3.31 | 3.46 | 3.46 | 2.67% | 30,932 |
| May 5, 2026 | 3.47 | 3.47 | 3.28 | 3.37 | 3.37 | -3.16% | 37,741 |
| May 4, 2026 | 3.26 | 3.63 | 3.17 | 3.48 | 3.48 | 5.45% | 71,972 |
| May 1, 2026 | 3.35 | 3.41 | 3.23 | 3.30 | 3.30 | -3.23% | 87,869 |
| Apr 30, 2026 | 3.22 | 3.41 | 2.81 | 3.41 | 3.41 | 5.90% | 62,838 |
| Apr 29, 2026 | 3.50 | 3.56 | 3.17 | 3.22 | 3.22 | -10.31% | 48,210 |
| Apr 28, 2026 | 3.30 | 3.65 | 3.02 | 3.59 | 3.59 | 4.94% | 160,101 |
| Apr 27, 2026 | 2.84 | 3.49 | 2.70 | 3.42 | 3.42 | 15.77% | 98,546 |
| Apr 24, 2026 | 3.18 | 3.18 | 2.89 | 2.96 | 2.96 | -1.86% | 79,753 |
| Apr 23, 2026 | 5.11 | 5.11 | 2.87 | 3.01 | 3.01 | -45.41% | 332,026 |
| Apr 22, 2026 | 5.63 | 5.68 | 5.39 | 5.52 | 5.52 | -2.58% | 11,031 |
| Apr 21, 2026 | 5.87 | 5.88 | 5.55 | 5.66 | 5.66 | -1.87% | 11,271 |
| Apr 20, 2026 | 5.74 | 5.85 | 5.60 | 5.77 | 5.77 | 2.85% | 11,410 |
| Apr 17, 2026 | 5.90 | 6.10 | 5.60 | 5.61 | 5.61 | -3.38% | 12,539 |
| Apr 16, 2026 | 6.09 | 6.13 | 5.67 | 5.81 | 5.81 | -1.69% | 19,570 |
| Apr 15, 2026 | 5.69 | 5.96 | 5.66 | 5.91 | 5.91 | 2.62% | 16,779 |
| Apr 14, 2026 | 5.76 | 5.97 | 5.64 | 5.76 | 5.76 | 0.26% | 14,591 |
| Apr 13, 2026 | 5.52 | 5.74 | 5.39 | 5.74 | 5.74 | 0.17% | 20,817 |
| Apr 10, 2026 | 5.46 | 5.86 | 5.46 | 5.73 | 5.73 | 2.89% | 14,380 |
| Apr 9, 2026 | 5.38 | 5.81 | 5.38 | 5.57 | 5.57 | 0.65% | 14,180 |
| Apr 8, 2026 | 5.53 | 5.73 | 5.53 | 5.53 | 5.53 | 0.13% | 7,735 |
| Apr 7, 2026 | 5.60 | 5.70 | 5.32 | 5.53 | 5.53 | -3.78% | 18,034 |
| Apr 6, 2026 | 5.88 | 5.88 | 5.67 | 5.74 | 5.74 | 0.58% | 9,608 |
| Apr 2, 2026 | 5.46 | 5.89 | 5.41 | 5.71 | 5.71 | -0.26% | 11,297 |
| Apr 1, 2026 | 5.63 | 5.81 | 5.59 | 5.73 | 5.73 | -1.09% | 11,414 |
| Mar 31, 2026 | 5.67 | 5.81 | 5.53 | 5.79 | 5.79 | 3.95% | 11,543 |
| Mar 30, 2026 | 5.60 | 5.74 | 5.46 | 5.57 | 5.57 | -0.57% | 15,844 |
| Mar 27, 2026 | 5.88 | 6.09 | 5.57 | 5.60 | 5.60 | -2.54% | 16,805 |
| Mar 26, 2026 | 5.98 | 6.23 | 5.68 | 5.75 | 5.75 | -4.04% | 14,200 |
| Mar 25, 2026 | 6.09 | 6.22 | 5.68 | 5.99 | 5.99 | 0.10% | 10,737 |
| Mar 24, 2026 | 5.75 | 6.30 | 5.67 | 5.98 | 5.98 | 1.54% | 30,127 |
| Mar 23, 2026 | 5.91 | 6.30 | 5.46 | 5.89 | 5.89 | -0.77% | 31,627 |
| Mar 20, 2026 | 6.02 | 6.37 | 5.85 | 5.94 | 5.94 | -1.93% | 34,215 |
| Mar 19, 2026 | 6.65 | 6.70 | 5.81 | 6.05 | 6.05 | 8.11% | 1,056,751 |
| Mar 18, 2026 | 5.43 | 6.19 | 5.32 | 5.60 | 5.60 | 6.65% | 137,911 |
| Mar 17, 2026 | 6.44 | 6.44 | 5.25 | 5.25 | 5.25 | -19.55% | 73,445 |
| Mar 16, 2026 | 7.84 | 7.84 | 6.30 | 6.53 | 6.53 | -16.75% | 76,435 |
| Mar 13, 2026 | 7.74 | 7.91 | 7.70 | 7.84 | 7.84 | 0.90% | 19,153 |
| Mar 12, 2026 | 7.91 | 8.05 | 7.67 | 7.77 | 7.77 | -1.77% | 39,561 |
| Mar 11, 2026 | 8.19 | 8.47 | 7.84 | 7.91 | 7.91 | -0.88% | 49,773 |
| Mar 10, 2026 | 8.33 | 9.94 | 7.63 | 7.98 | 7.98 | -3.39% | 380,667 |
| Mar 9, 2026 | 8.40 | 8.68 | 7.98 | 8.26 | 8.26 | -4.84% | 57,887 |
| Mar 6, 2026 | 9.80 | 9.87 | 8.47 | 8.68 | 8.68 | -13.29% | 120,711 |