Deep Fission, Inc. (FISN)
NASDAQ: FISN · Real-Time Price · USD
2.670
-0.370 (-12.17%)
At close: Oct 30, 2026, 4:00 PM EDT
2.845
+0.175 (6.56%)
After-hours: Oct 30, 2026, 7:59 PM EDT
Deep Fission Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 30, 2026 | 2.89 | 2.95 | 2.50 | 2.67 | 2.67 | -12.17% | 451,600 |
| Oct 29, 2026 | 3.32 | 3.32 | 2.88 | 3.04 | 3.04 | -8.16% | 568,352 |
| Oct 28, 2026 | 2.72 | 3.41 | 2.61 | 3.31 | 3.31 | 23.05% | 957,439 |
| Oct 27, 2026 | 2.17 | 2.72 | 2.17 | 2.69 | 2.69 | 24.54% | 619,686 |
| Oct 26, 2026 | 2.28 | 2.31 | 2.10 | 2.16 | 2.16 | -6.09% | 409,214 |
| Oct 23, 2026 | 2.41 | 2.48 | 2.25 | 2.30 | 2.30 | -4.56% | 667,265 |
| Oct 22, 2026 | 2.56 | 2.61 | 2.35 | 2.41 | 2.41 | -8.37% | 458,180 |
| Oct 21, 2026 | 2.91 | 2.92 | 2.58 | 2.63 | 2.63 | -6.41% | 895,867 |
| Oct 20, 2026 | 3.62 | 4.13 | 2.80 | 2.81 | 2.81 | -23.22% | 2,130,796 |
| Oct 19, 2026 | 3.59 | 3.81 | 3.39 | 3.66 | 3.66 | 6.09% | 715,494 |
| Oct 16, 2026 | 3.66 | 3.75 | 3.40 | 3.45 | 3.45 | -5.48% | 363,054 |
| Oct 15, 2026 | 3.84 | 3.85 | 3.55 | 3.65 | 3.65 | -5.19% | 690,109 |
| Oct 14, 2026 | 3.95 | 3.98 | 3.63 | 3.85 | 3.85 | -3.99% | 490,702 |
| Oct 13, 2026 | 4.02 | 4.20 | 3.96 | 4.01 | 4.01 | -4.07% | 417,441 |
| Oct 12, 2026 | 4.50 | 4.56 | 4.12 | 4.18 | 4.18 | -6.07% | 417,524 |
| Oct 9, 2026 | 4.70 | 4.77 | 4.40 | 4.45 | 4.45 | -4.51% | 416,496 |
| Oct 8, 2026 | 5.05 | 5.08 | 4.61 | 4.66 | 4.66 | -8.27% | 478,895 |
| Oct 7, 2026 | 5.40 | 5.46 | 5.06 | 5.08 | 5.08 | -7.13% | 195,016 |
| Oct 6, 2026 | 5.40 | 5.85 | 5.40 | 5.47 | 5.47 | 1.77% | 278,144 |
| Oct 5, 2026 | 5.60 | 5.73 | 5.31 | 5.38 | 5.38 | -3.50% | 198,111 |
| Oct 2, 2026 | 5.44 | 6.05 | 5.25 | 5.57 | 5.57 | 7.53% | 520,780 |
| Oct 1, 2026 | 5.15 | 5.24 | 4.90 | 5.18 | 5.18 | 0.97% | 336,740 |
| Sep 30, 2026 | 5.29 | 5.47 | 5.05 | 5.13 | 5.13 | -2.19% | 282,141 |
| Sep 29, 2026 | 5.64 | 5.75 | 5.20 | 5.25 | 5.25 | -3.23% | 437,034 |
| Sep 28, 2026 | 6.30 | 6.45 | 5.40 | 5.42 | 5.42 | -13.28% | 579,476 |
| Sep 25, 2026 | 6.64 | 6.75 | 6.23 | 6.25 | 6.25 | -10.07% | 581,412 |
| Sep 24, 2026 | 7.77 | 7.87 | 6.84 | 6.95 | 6.95 | -10.90% | 710,622 |
| Sep 23, 2026 | 8.15 | 8.21 | 7.62 | 7.80 | 7.80 | -3.94% | 316,279 |
| Sep 22, 2026 | 7.97 | 8.36 | 7.88 | 8.12 | 8.12 | 3.84% | 407,510 |
| Sep 21, 2026 | 8.47 | 8.58 | 7.68 | 7.82 | 7.82 | -7.67% | 294,393 |
| Sep 18, 2026 | 8.15 | 8.79 | 7.96 | 8.47 | 8.47 | 4.31% | 1,535,344 |
| Sep 17, 2026 | 7.19 | 8.24 | 7.01 | 8.12 | 8.12 | 14.37% | 345,018 |
| Sep 16, 2026 | 7.13 | 7.38 | 6.90 | 7.10 | 7.10 | -0.14% | 214,669 |
| Sep 15, 2026 | 7.18 | 7.57 | 7.04 | 7.11 | 7.11 | -0.70% | 164,078 |
| Sep 14, 2026 | 7.11 | 7.37 | 6.68 | 7.16 | 7.16 | - | 244,726 |
| Sep 11, 2026 | 6.89 | 7.39 | 6.75 | 7.16 | 7.16 | 6.07% | 221,791 |
| Sep 10, 2026 | 7.00 | 7.14 | 6.73 | 6.75 | 6.75 | -5.06% | 192,471 |
| Sep 9, 2026 | 6.92 | 7.24 | 6.80 | 7.11 | 7.11 | 1.86% | 205,843 |
| Sep 8, 2026 | 7.19 | 7.25 | 6.80 | 6.98 | 6.98 | -2.38% | 257,417 |
| Sep 4, 2026 | 7.20 | 7.38 | 7.04 | 7.15 | 7.15 | 0.14% | 159,451 |
| Sep 3, 2026 | 6.97 | 7.45 | 6.91 | 7.14 | 7.14 | 2.44% | 259,419 |
| Sep 2, 2026 | 6.38 | 6.98 | 6.17 | 6.97 | 6.97 | 9.08% | 339,069 |
| Sep 1, 2026 | 6.70 | 6.84 | 6.10 | 6.39 | 6.39 | -4.77% | 367,130 |
| Aug 31, 2026 | 6.77 | 7.03 | 6.62 | 6.71 | 6.71 | 2.29% | 209,728 |
| Aug 28, 2026 | 6.86 | 7.10 | 6.42 | 6.56 | 6.56 | -5.34% | 247,162 |
| Aug 27, 2026 | 6.93 | 7.24 | 6.76 | 6.93 | 6.93 | 0.58% | 182,859 |
| Aug 26, 2026 | 6.98 | 7.33 | 6.77 | 6.89 | 6.89 | -0.58% | 165,385 |
| Aug 25, 2026 | 7.28 | 7.41 | 6.78 | 6.93 | 6.93 | -2.81% | 289,083 |
| Aug 24, 2026 | 8.20 | 8.21 | 7.03 | 7.13 | 7.13 | -13.58% | 318,146 |
| Aug 21, 2026 | 7.83 | 8.30 | 7.83 | 8.25 | 8.25 | 6.18% | 146,503 |