Altimmune, Inc. (ALT) Stock Price History
Historical prices from 2017 to 2026
Loading 10-year price history...
ALT Historical Performance
Short-Term Returns
ALT Stock Price Trajectory (2017–2026)
As of May 8, 2026, Altimmune, Inc. (ALT) trades at $3.04, representing a -43.3% return over the past year. The stock has delivered a -77.1% total return over five years (-25.5% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $137.70 on May 26, 2017. From this peak, ALT has corrected -97.8%, currently trading 24% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers VKTX (+14.6% 1Y), TERN (+1647.5% 1Y), and NRXP (+55.3% 1Y), ALT has underperformed the peer group average. Compare ALT vs VKTX →
ALT Historical Price Data (2025–2026)
Showing 30 of 2,250 recordsLoading full history…
| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-05-07 | 3.23 | 3.23 | 3.00 | 3.04 | 3.68M | -6.75% |
| 2026-05-06 | 3.06 | 3.26 | 3.04 | 3.26 | 4.07M | +6.54% |
| 2026-05-05 | 3.07 | 3.15 | 3.00 | 3.06 | 3.18M | +1.32% |
| 2026-05-04 | 2.85 | 3.04 | 2.84 | 3.02 | 5.15M | +7.09% |
| 2026-05-01 | 2.59 | 2.82 | 2.56 | 2.82 | 4.83M | +8.46% |
| 2026-04-30 | 2.66 | 2.67 | 2.58 | 2.60 | 5.19M | -1.14% |
| 2026-04-29 | 2.71 | 2.73 | 2.60 | 2.63 | 4.56M | -4.01% |
| 2026-04-28 | 2.78 | 2.85 | 2.72 | 2.74 | 4.82M | -2.14% |
| 2026-04-27 | 2.85 | 2.90 | 2.75 | 2.80 | 5.48M | -1.58% |
| 2026-04-24 | 2.95 | 3.01 | 2.82 | 2.85 | 13.74M | -1.56% |
| 2026-04-23 | 3.08 | 3.16 | 2.80 | 2.89 | 30.46M | -16.71% |
| 2026-04-22 | 3.46 | 3.51 | 3.42 | 3.47 | 1.86M | +1.76% |
| 2026-04-21 | 3.56 | 3.63 | 3.40 | 3.41 | 3.21M | -4.21% |
| 2026-04-20 | 3.46 | 3.58 | 3.39 | 3.56 | 2.14M | +1.71% |
| 2026-04-17 | 3.55 | 3.60 | 3.42 | 3.50 | 2.85M | -0.28% |
| 2026-04-16 | 3.40 | 3.55 | 3.35 | 3.51 | 2.54M | +3.24% |
| 2026-04-15 | 3.31 | 3.42 | 3.29 | 3.40 | 2.04M | +3.34% |
| 2026-04-14 | 3.26 | 3.32 | 3.23 | 3.29 | 1.95M | +1.86% |
| 2026-04-13 | 3.23 | 3.27 | 3.18 | 3.23 | 2.08M | -0.31% |
| 2026-04-10 | 3.38 | 3.41 | 3.23 | 3.24 | 1.90M | -4.14% |
| 2026-04-09 | 3.37 | 3.44 | 3.31 | 3.38 | 1.97M | +0.30% |
| 2026-04-08 | 3.49 | 3.54 | 3.35 | 3.37 | 1.68M | -0.30% |
| 2026-04-07 | 3.32 | 3.45 | 3.25 | 3.38 | 2.02M | +1.50% |
| 2026-04-06 | 3.33 | 3.48 | 3.30 | 3.33 | 2.32M | -0.30% |
| 2026-04-02 | 3.08 | 3.35 | 3.08 | 3.34 | 2.69M | +7.05% |
| 2026-04-01 | 3.14 | 3.23 | 3.10 | 3.12 | 1.97M | +1.30% |
| 2026-03-31 | 2.98 | 3.13 | 2.98 | 3.08 | 3.17M | +6.94% |
| 2026-03-30 | 3.03 | 3.03 | 2.87 | 2.88 | 3.07M | -4.64% |
| 2026-03-27 | 3.16 | 3.19 | 3.02 | 3.02 | 2.65M | -5.63% |
| 2026-03-26 | 3.26 | 3.33 | 3.19 | 3.20 | 2.16M | -3.32% |
See ALT's True Return
Price is only half the story. See total return with reinvested dividends.
Launch CalculatorIs ALT Undervalued?
DCF intrinsic value, peer multiples, and analyst estimates — see what the stock is really worth.
View ValuationCompare ALT vs DBVT
Side-by-side business, growth, and profitability comparison vs DBV Technologies S.A..
Start ComparisonALT — Frequently Asked Questions
Quick answers to the most common questions about buying ALT stock.
How has ALT stock performed recently?
ALT declined -43.3% over the past year, below its 5-year annualized CAGR of -25.5%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is ALT's all-time high price?
Altimmune, Inc. reached $137.70 on 2017-05-26. The 52-week high is $7.73. Current 1-year return of -43.3% places the stock further from historical peaks.
Where can I download ALT historical price data?
This page provides ALT daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2017-2026, downloadable in CSV format.