IO Biotech, Inc.
IOBTNASDAQHealthcare
$0.01
$-0.00(-27.59%)
Market Cap$885690
P/E Ratio—
52W High$2.79
52W Low$0.01231
IO Biotech, Inc. (IOBT) Stock Price History
Key milestones, OHLCV table, annual returns, peers & What If.
iobt · EOD price history · split-adj. · FMP · as of May 7, 2026
5-Year High5Y
$17.88
Nov 5, 2021
-99.9% from here
5-Year Low5Y
$0.0030
Apr 30, 2026
+310.3% from low
IPO Priceadj.
$15.65
Nov 5, 2021
-99.9% since IPO
1 Year Ago
$1.55
Jun 9, 2025
-99.2% in 1Y
5 Years Ago
—
—
+0.0% in 5Y
10 Years Ago
—
—
+0.0% in 10Y
Historical Price Data · IOBT
| Date↓ | Open↕ | High↕ | Low↕ | Close↕ | Close (Unadj.) ⓘ | Volume↕ | Change %↕ |
|---|---|---|---|---|---|---|---|
| May 7, 2026 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | 372K | -6.98% |
| May 6, 2026 | $0.01 | $0.01 | $0.00 | $0.00 | $0.00 | 607K | -21.82% |
| May 5, 2026 | $0.00 | $0.01 | $0.00 | $0.01 | $0.01 | 167K | +19.77% |
| May 4, 2026 | $0.01 | $0.01 | $0.00 | $0.01 | $0.01 | 292K | -1.75% |
| May 1, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 406K | +4.44% |
| Apr 30, 2026 | $0.01 | $0.01 | $0.00 | $0.00 | $0.00 | 1.3M | -15.79% |
| Apr 29, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 209K | -5.00% |
| Apr 28, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 195K | +7.41% |
| Apr 27, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 227K | -19.40% |
| Apr 24, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 443K | +16.98% |
| Apr 23, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 806K | -10.77% |
| Apr 22, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 1.9M | -7.59% |
| Apr 21, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 1.3M | +10.29% |
| Apr 20, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 710K | +19.22% |
| Apr 17, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 1.5M | -19.05% |
| Apr 16, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 1.2M | -5.88% |
| Apr 15, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 2.2M | -11.69% |
| Apr 14, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 2.4M | -18.09% |
| Apr 13, 2026 | $0.01 | $0.01 | $0.01 | $0.01 | $0.01 | 1.5M | -14.15% |
| Apr 10, 2026 | $0.01 | $0.02 | $0.01 | $0.01 | $0.01 | 3.8M | -3.64% |
Showing 1–20 of 1,129 records
Annual Stock Price Performance · IOBT
Jan 1 → Dec 31 · 6 years2026-99.3%$0.61 → $0.00
-99.3%
2025-35.9%$0.95 → $0.61
-35.9%
2024-50.8%$1.87 → $0.92
-50.8%
2023-18.3%$2.30 → $1.88
-18.3%
2022-65.0%$6.57 → $2.30
-65.0%
2021-60.0%$16.00 → $6.40
-60.0%
Best Year2023 · -18.3%
Worst Year2026 · -99.3%
Positive Years0 / 6
Avg Annual Return-54.9%
6Y Total Return-100.0%
6Y CAGR~-74.9% / yr
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If you invested $1,000 in IOBT at IPO (split-adj.) — how much would it be worth today?
INVESTED$1,000
→TODAY WORTH$1
Total Return-99.9%
CAGR~-76.1% / yr
Profit$-999
Based on Nov 5, 2021 · $15.65Split & dividend adjustedNo fees assumed
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About Price History & OHLCV Data
IO Biotech, Inc. (IOBT) is classified under Healthcare and trades on NASDAQ. The quote snapshot on this page shows a last price of $0.01. Use the chart and OHLCV table below for open, high, low, close and volume over time.
Annual performance bars, similar companies in the same sector, and the What If calculator help you explore long-horizon returns without leaving this tab. Figures use split-adjusted end-of-day prices where noted; this content is informational, not investment advice.
Data: FMP EOD · split-adjusted where noted · not investment advice
Frequently Asked Questions
IOBT price history · 5 questionsEnd-of-day prices are sourced from market data providers (Financial Modeling Prep). Corporate actions such as splits may be reflected in adjusted series; always verify critical values with your broker or official filings.
IOBT historical stock pricesFMP EOD datasplit-adjusted OHLCV