IO Biotech, Inc. (IOBT)
NASDAQ: IOBT · Real-Time Price · USD
0.280
-0.021 (-6.82%)
At close: Mar 9, 2026, 4:00 PM EDT
0.283
+0.003 (1.00%)
After-hours: Mar 9, 2026, 4:58 PM EDT
IO Biotech Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Mar 9, 2026 | 0.32 | 0.33 | 0.28 | 0.28 | - | -6.76% | 1,479,435 |
| Mar 6, 2026 | 0.31 | 0.33 | 0.30 | 0.30 | 0.30 | -7.77% | 722,518 |
| Mar 5, 2026 | 0.32 | 0.34 | 0.32 | 0.33 | 0.33 | -1.81% | 295,034 |
| Mar 4, 2026 | 0.34 | 0.35 | 0.32 | 0.33 | 0.33 | -2.30% | 256,059 |
| Mar 3, 2026 | 0.31 | 0.35 | 0.31 | 0.34 | 0.34 | 3.10% | 585,679 |
| Mar 2, 2026 | 0.33 | 0.33 | 0.31 | 0.33 | 0.33 | -5.62% | 839,523 |
| Feb 27, 2026 | 0.36 | 0.36 | 0.34 | 0.35 | 0.35 | -2.79% | 461,427 |
| Feb 26, 2026 | 0.34 | 0.36 | 0.34 | 0.36 | 0.36 | 5.16% | 392,136 |
| Feb 25, 2026 | 0.34 | 0.36 | 0.34 | 0.34 | 0.34 | 2.52% | 591,823 |
| Feb 24, 2026 | 0.33 | 0.34 | 0.33 | 0.33 | 0.33 | -1.45% | 262,336 |
| Feb 23, 2026 | 0.34 | 0.35 | 0.32 | 0.34 | 0.34 | -0.62% | 653,285 |
| Feb 20, 2026 | 0.35 | 0.37 | 0.34 | 0.34 | 0.34 | -5.69% | 509,774 |
| Feb 19, 2026 | 0.37 | 0.38 | 0.35 | 0.36 | 0.36 | -5.13% | 958,348 |
| Feb 18, 2026 | 0.37 | 0.39 | 0.36 | 0.38 | 0.38 | 3.83% | 884,888 |
| Feb 17, 2026 | 0.39 | 0.39 | 0.34 | 0.37 | 0.37 | -0.97% | 1,390,645 |
| Feb 13, 2026 | 0.37 | 0.37 | 0.34 | 0.37 | 0.37 | 3.97% | 1,423,024 |
| Feb 12, 2026 | 0.35 | 0.36 | 0.32 | 0.36 | 0.36 | - | 1,012,285 |
| Feb 11, 2026 | 0.37 | 0.38 | 0.34 | 0.36 | 0.36 | -3.16% | 2,595,212 |
| Feb 10, 2026 | 0.37 | 0.40 | 0.34 | 0.37 | 0.37 | -1.53% | 2,242,203 |
| Feb 9, 2026 | 0.36 | 0.40 | 0.34 | 0.37 | 0.37 | 6.51% | 2,658,751 |
| Feb 6, 2026 | 0.31 | 0.35 | 0.30 | 0.35 | 0.35 | 9.27% | 4,105,695 |
| Feb 5, 2026 | 0.28 | 0.33 | 0.27 | 0.32 | 0.32 | 18.15% | 4,128,800 |
| Feb 4, 2026 | 0.28 | 0.29 | 0.26 | 0.27 | 0.27 | -1.92% | 738,322 |
| Feb 3, 2026 | 0.28 | 0.29 | 0.26 | 0.28 | 0.28 | -0.58% | 1,843,299 |
| Feb 2, 2026 | 0.29 | 0.30 | 0.27 | 0.28 | 0.28 | -4.17% | 1,725,340 |
| Jan 30, 2026 | 0.32 | 0.33 | 0.29 | 0.29 | 0.29 | -8.28% | 1,686,286 |
| Jan 29, 2026 | 0.31 | 0.33 | 0.30 | 0.32 | 0.32 | 2.03% | 1,347,973 |
| Jan 28, 2026 | 0.32 | 0.34 | 0.31 | 0.31 | 0.31 | -5.86% | 1,245,582 |
| Jan 27, 2026 | 0.32 | 0.33 | 0.31 | 0.33 | 0.33 | 6.16% | 2,755,924 |
| Jan 26, 2026 | 0.33 | 0.36 | 0.30 | 0.31 | 0.31 | -15.48% | 4,266,116 |
| Jan 23, 2026 | 0.43 | 0.45 | 0.35 | 0.37 | 0.37 | -23.56% | 17,365,231 |
| Jan 22, 2026 | 0.25 | 0.58 | 0.23 | 0.48 | 0.48 | 131.26% | 473,914,684 |
| Jan 21, 2026 | 0.47 | 0.50 | 0.21 | 0.21 | 0.21 | -59.74% | 36,583,009 |
| Jan 20, 2026 | 0.50 | 0.53 | 0.47 | 0.52 | 0.52 | 2.69% | 664,907 |
| Jan 16, 2026 | 0.52 | 0.52 | 0.50 | 0.50 | 0.50 | -2.69% | 436,484 |
| Jan 15, 2026 | 0.54 | 0.54 | 0.51 | 0.52 | 0.52 | -3.73% | 324,891 |
| Jan 14, 2026 | 0.52 | 0.55 | 0.52 | 0.54 | 0.54 | 3.68% | 521,110 |
| Jan 13, 2026 | 0.51 | 0.54 | 0.51 | 0.52 | 0.52 | 2.17% | 600,276 |
| Jan 12, 2026 | 0.58 | 0.59 | 0.50 | 0.51 | 0.51 | -10.03% | 1,214,507 |
| Jan 9, 2026 | 0.56 | 0.59 | 0.56 | 0.56 | 0.56 | 0.25% | 535,192 |
| Jan 8, 2026 | 0.61 | 0.62 | 0.55 | 0.56 | 0.56 | -10.67% | 1,423,615 |
| Jan 7, 2026 | 0.64 | 0.68 | 0.63 | 0.63 | 0.63 | -1.78% | 583,384 |
| Jan 6, 2026 | 0.61 | 0.66 | 0.60 | 0.64 | 0.64 | 4.82% | 673,417 |
| Jan 5, 2026 | 0.68 | 0.70 | 0.61 | 0.61 | 0.61 | -9.10% | 982,025 |
| Jan 2, 2026 | 0.61 | 0.67 | 0.60 | 0.67 | 0.67 | 10.22% | 600,384 |
| Dec 31, 2025 | 0.58 | 0.62 | 0.55 | 0.61 | 0.61 | 4.78% | 990,713 |
| Dec 30, 2025 | 0.66 | 0.68 | 0.58 | 0.58 | 0.58 | -14.06% | 1,229,213 |
| Dec 29, 2025 | 0.70 | 0.73 | 0.66 | 0.68 | 0.68 | -8.50% | 387,529 |
| Dec 26, 2025 | 0.71 | 0.74 | 0.69 | 0.74 | 0.74 | 0.07% | 347,452 |
| Dec 24, 2025 | 0.68 | 0.75 | 0.68 | 0.74 | 0.74 | 5.50% | 246,181 |
| Dec 23, 2025 | 0.71 | 0.74 | 0.67 | 0.70 | 0.70 | -0.93% | 506,984 |
| Dec 22, 2025 | 0.65 | 0.72 | 0.65 | 0.71 | 0.71 | 6.34% | 643,510 |
| Dec 19, 2025 | 0.61 | 0.67 | 0.61 | 0.66 | 0.66 | 6.83% | 560,637 |
| Dec 18, 2025 | 0.65 | 0.67 | 0.61 | 0.62 | 0.62 | -2.03% | 769,422 |
| Dec 17, 2025 | 0.69 | 0.72 | 0.63 | 0.63 | 0.63 | -7.99% | 799,194 |
| Dec 16, 2025 | 0.68 | 0.71 | 0.67 | 0.69 | 0.69 | -2.31% | 467,095 |
| Dec 15, 2025 | 0.80 | 0.80 | 0.66 | 0.71 | 0.71 | -12.54% | 1,364,347 |
| Dec 12, 2025 | 0.86 | 0.86 | 0.80 | 0.81 | 0.81 | -5.00% | 335,507 |
| Dec 11, 2025 | 0.80 | 0.88 | 0.80 | 0.85 | 0.85 | 4.95% | 547,265 |
| Dec 10, 2025 | 0.83 | 0.83 | 0.78 | 0.81 | 0.81 | -4.32% | 323,489 |
| Dec 9, 2025 | 0.75 | 0.87 | 0.75 | 0.85 | 0.85 | 12.62% | 1,344,199 |
| Dec 8, 2025 | 0.71 | 0.76 | 0.69 | 0.75 | 0.75 | 7.89% | 804,656 |
| Dec 5, 2025 | 0.72 | 0.76 | 0.68 | 0.70 | 0.70 | 2.74% | 1,037,215 |
| Dec 4, 2025 | 0.67 | 0.72 | 0.66 | 0.68 | 0.68 | 5.75% | 1,019,458 |
| Dec 3, 2025 | 0.64 | 0.66 | 0.60 | 0.64 | 0.64 | 1.38% | 1,087,514 |
| Dec 2, 2025 | 0.68 | 0.69 | 0.59 | 0.63 | 0.63 | -7.26% | 1,318,758 |
| Dec 1, 2025 | 0.72 | 0.73 | 0.65 | 0.68 | 0.68 | -5.23% | 1,206,601 |
| Nov 28, 2025 | 0.77 | 0.78 | 0.71 | 0.72 | 0.72 | -1.96% | 613,428 |
| Nov 26, 2025 | 0.75 | 0.77 | 0.73 | 0.73 | 0.73 | 0.94% | 390,601 |
| Nov 25, 2025 | 0.77 | 0.79 | 0.69 | 0.73 | 0.73 | -7.84% | 1,009,086 |
| Nov 24, 2025 | 0.78 | 0.83 | 0.74 | 0.79 | 0.79 | -0.75% | 403,965 |
| Nov 21, 2025 | 0.72 | 0.81 | 0.70 | 0.80 | 0.80 | 7.62% | 716,875 |
| Nov 20, 2025 | 0.76 | 0.80 | 0.72 | 0.74 | 0.74 | -1.70% | 319,143 |
| Nov 19, 2025 | 0.80 | 0.83 | 0.75 | 0.75 | 0.75 | -8.90% | 348,736 |
| Nov 18, 2025 | 0.68 | 0.84 | 0.68 | 0.83 | 0.83 | 25.04% | 1,150,639 |
| Nov 17, 2025 | 0.80 | 0.83 | 0.63 | 0.66 | 0.66 | -20.28% | 2,531,609 |
| Nov 14, 2025 | 0.78 | 0.84 | 0.77 | 0.83 | 0.83 | 1.71% | 414,842 |
| Nov 13, 2025 | 0.84 | 0.86 | 0.80 | 0.81 | 0.81 | -1.05% | 549,227 |
| Nov 12, 2025 | 0.90 | 0.90 | 0.81 | 0.82 | 0.82 | -6.00% | 622,740 |
| Nov 11, 2025 | 0.85 | 0.93 | 0.84 | 0.87 | 0.87 | -0.10% | 920,303 |
| Nov 10, 2025 | 0.90 | 0.97 | 0.84 | 0.88 | 0.88 | -2.88% | 1,078,830 |
| Nov 7, 2025 | 0.80 | 0.93 | 0.78 | 0.90 | 0.90 | 6.96% | 1,687,926 |
| Nov 6, 2025 | 0.86 | 0.88 | 0.81 | 0.84 | 0.84 | -5.26% | 453,981 |
| Nov 5, 2025 | 0.84 | 0.90 | 0.81 | 0.89 | 0.89 | 6.09% | 810,463 |
| Nov 4, 2025 | 0.90 | 0.91 | 0.83 | 0.84 | 0.84 | -7.90% | 702,383 |
| Nov 3, 2025 | 1.03 | 1.03 | 0.89 | 0.91 | 0.91 | -12.44% | 1,338,967 |
| Oct 31, 2025 | 0.88 | 1.07 | 0.88 | 1.04 | 1.04 | 20.62% | 2,098,431 |
| Oct 30, 2025 | 0.84 | 0.89 | 0.79 | 0.86 | 0.86 | -1.42% | 1,123,949 |
| Oct 29, 2025 | 0.88 | 0.90 | 0.83 | 0.87 | 0.87 | -2.93% | 1,214,760 |
| Oct 28, 2025 | 0.93 | 0.95 | 0.86 | 0.90 | 0.90 | -0.87% | 1,393,353 |
| Oct 27, 2025 | 0.95 | 0.99 | 0.88 | 0.91 | 0.91 | -9.11% | 2,045,382 |
| Oct 24, 2025 | 1.03 | 1.06 | 0.96 | 1.00 | 1.00 | - | 1,482,286 |
| Oct 23, 2025 | 1.15 | 1.15 | 0.93 | 1.00 | 1.00 | -14.53% | 3,607,812 |
| Oct 22, 2025 | 0.99 | 1.23 | 0.93 | 1.17 | 1.17 | 14.71% | 7,758,302 |
| Oct 21, 2025 | 0.79 | 1.03 | 0.75 | 1.02 | 1.02 | 24.36% | 8,351,724 |
| Oct 20, 2025 | 0.91 | 0.91 | 0.69 | 0.82 | 0.82 | 25.18% | 71,028,467 |
| Oct 17, 2025 | 0.78 | 0.79 | 0.62 | 0.66 | 0.66 | -14.49% | 2,126,116 |
| Oct 16, 2025 | 0.70 | 0.77 | 0.63 | 0.77 | 0.77 | 15.01% | 3,426,871 |
| Oct 15, 2025 | 0.68 | 0.72 | 0.64 | 0.67 | 0.67 | 3.80% | 3,146,564 |
| Oct 14, 2025 | 0.58 | 0.64 | 0.55 | 0.64 | 0.64 | 10.52% | 2,223,186 |