Dark

ALT
Altimmune, Inc. Common Stock
stock NASDAQ

Market Open

Oct 15, 2025 10:52:38 AM EDT

3.98USD+0.631%(+0.02)584,236

3.97Bid 3.99Ask 0.02Spread

Pre-market

Oct 15, 2025 9:24:30 AM EDT

3.94USD-0.505%(-0.02)8,378

After-hours

Oct 14, 2025 4:55:30 PM EDT

3.98USD+0.505%(+0.02)0

OverviewOptionsHistoricalExchangesShort Interest - DailyMore

As of 2025-09-30, there were 26,194,292 shares short with a short interest of 29.91%.

Price

Price

Historical data is split-adjusted.

1) Data from Finra. Finra publishes an updated file every two weeks.

2) Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.

.dark-mode .G9v0bs{ color: white; background-color: #333333; border: 2px solid white; }.light-mode .G9v0bs{ color: #333333; background-color: white; border: 2px solid #333333; }ALTAltimmune, Inc. Common Stockstock NASDAQ