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$ALT

Altimmune, Inc. Common Stock

XNAS

$2.98-4.49%−$0.1400Prev $3.12LIVE Full chart Live alerts
No recent price bars, the chart lights up when ALT starts printing.

Why is ALT down today? It is at $2.98 (-4.49%), and our scanner flagged it 155 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ALT spikes, and full due diligence on ALT — key stats, earnings, dilution and insider activity. Free.

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Our scanner flagged $ALT 155 times in the last 30 days. Create a free account to track $ALT, build a watchlist, and get instant unusual-volume alerts, with a full day of premium now and 5 more when you verify your email, no card needed.

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Key Stats

Price & performance
Price
$2.98
Change today
-4.49%
Previous close
$3.12
52-week range
$2.56 – $6.44
Valuation & dividend
Market cap
$578M
Ownership & volume
Shares outstanding
194.5M
Live vendor count
Institutional own.
82.42%
Total held
82.4%
Tradeable float
34.2M
18% of shares · after 82% institutions
Short interest
51.9M
▲ +8% vs prior · as of 2026-07-31
Days to cover
11.4d
Avg daily volume
4.0M
Classification
Exchange
XNAS
Relative volumevs this time of day
5m
0.1x
15m
0.1x
1h
0.7x
1D
0.5x

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Why is $ALT down today?

3 alerts today20.5x RVOL

ALT is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 3 unusual-volume and momentum alerts on ALT today, peaking at 20.5x its normal volume.

Why is $ALT moving? →▶ Replay the moveAuto-generated from live scanner data. Not investment advice.
Trading profileShortableEasy to borrowNo SSRBorrow via Alpaca · SSR from Reg SHO 201
Wall Street consensusStrong Buy5 analysts
Avg target $19.50(+554% upside)
Range $10 - $28
4 buy1 hold0 sell

Analyst data via Nasdaq. Not investment advice.

Insiders

Insiders buying6 open-market buys3 buys, 0 sells last 3 months (16/11 over 12 months)
Show 12 recent transactions
InsiderActionShares% of positionOwns afterValueDate
Durso Jerome Benedict
Officer
Bought (open market)+15Kadded 32%63K$44K
at $2.95
Aug 13, 26
Roberts M Scot
Officer
Acquired (grant/award)+875added 0.8%114K$2K
at $2.41
Jul 31, 26
Weaver Gregory L
Officer
Acquired (grant/award)+2Kadded 4.6%40K$4K
at $2.41
Jul 31, 26
Gill John
Director
Bought (open market)+9Kadded 74%22K$31K
at $3.41
Apr 6, 26
Durso Jerome Benedict
Officer
Bought (open market)+15Kadded 46%48K$47K
at $3.14
Apr 1, 26
Weaver Gregory L
Officer
Bought (open market)+10Kadded 36%38K$32K
at $3.15
Apr 1, 26
Durso Jerome Benedict
Officer
Bought (open market)+20K
0.01% of company
added 100%33K$71K
at $3.54
Mar 6, 26
Weaver Gregory L
Officer
Bought (open market)+5Kadded 22%28K$18K
at $3.54
Mar 6, 26
Roberts M Scot
Officer
Sold (automatic/other)-2Ksold 2.0%113K$13K
at $5.55
Feb 2, 26
Roberts M Scot
Officer
Other8Kadded 7.2%115Kn/aFeb 2, 26
Jordt Raymond M
Officer
Acquired (grant/award)+5Kadded 7.0%70K$14K
at $3.07
Jan 31, 26
Garg Vipin K
Director
Acquired (grant/award)+7Kadded 1.7%425K$21K
at $3.07
Jan 31, 26

Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.

Dilution watch

Unavailable

We could not reach SEC EDGAR, so the dilution check did not run for $ALT. This is not a clean result: there may be an offering, a registration or a shelf on file that we were unable to read. Check it yourself on SEC EDGAR before trading it.

$ALT Sentiment

Bearish
Bearish22Bullish
📰 News: 0 bull · 0 bearToday: -4.5%👥 Community: 0 bull · 0 bear

Blend of news sentiment, today’s move, and community votes. Not investment advice.

$ALT Activity

News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.

Alert· 7h ago -1.67%
$ALT moved -1.67% in 1 min (Level 1) at 10:09 AM ET
at $2.96
Alert· 7h ago 20.5× RVOL
ALT hit 20.475x RVOL at 10:09 AM ET
at $2.97
Alert· 7h ago 2.5× RVOL
ALT hit 2.519x RVOL at 9:52 AM ET
at $3.01
Alert· 23h ago +0.5% vs EMA
$ALT crossed above 200 EMA (+0.52% vs EMA) at 6:01 PM ET
at $3.15
Alert· 23h ago 19.3× RVOL
ALT hit 19.342x RVOL at 6:01 PM ET
at $3.15
Alert· 1d ago -1.74%
$ALT moved -1.74% in 1 min (Level 1) at 3:08 PM ET
at $3.10
Alert· 1d ago +1.11%
$ALT moved +1.11% in 1 min (Level 1) at 2:41 PM ET
at $3.19
Alert· 1d ago +2.0% vs EMA
$ALT near 200 EMA: +2.02% from 200 EMA at 2:41 PM ET
at $3.19
Alert· 1d ago 51.9× RVOL
ALT hit 51.932x RVOL at 2:41 PM ET
at $3.19
Alert· 1d ago +1.26%
$ALT moved +1.26% in 1 min (Level 1) at 1:42 PM ET
at $3.17
Alert· 1d ago +1.3% vs EMA
$ALT near 200 EMA: +1.27% from 200 EMA at 1:11 PM ET
at $3.11
Alert· 1d ago 28.3× RVOL
ALT hit 28.273x RVOL at 1:11 PM ET
at $3.11
Alert· 1d ago +1.45%
$ALT moved +1.45% in 1 min (Level 1) at 12:37 PM ET
at $3.15
Alert· 1d ago 18.0× RVOL
ALT hit 18.010x RVOL at 12:36 PM ET
at $3.15
Alert· 1d ago +1.7% vs EMA
$ALT near 200 EMA: +1.72% from 200 EMA at 12:12 PM ET
at $3.08
Alert· 1d ago +1.15%
$ALT moved +1.15% in 1 min (Level 1) at 12:12 PM ET
at $3.08
Alert· 1d ago 3.9× RVOL
ALT hit 3.855x RVOL at 12:12 PM ET
at $3.08
Alert· 1d ago 2.0× RVOL
ALT hit 2.000x RVOL at 11:29 AM ET
at $3.10
Alert· 1d ago 8.1× RVOL
ALT hit 8.098x RVOL at 10:37 AM ET
at $3.06
Alert· 1d ago +1.16%
$ALT moved +1.16% in 1 min (Level 1) at 10:26 AM ET
at $3.06
Alert· 1d ago 12.3× RVOL
ALT hit 12.258x RVOL at 10:04 AM ET
at $3.03
Alert· 1d ago +0.7% vs EMA
$ALT near 200 EMA: +0.73% from 200 EMA at 6:56 PM ET
at $3.01
Alert· 1d ago -1.07%
$ALT moved -1.07% in 1 min (Level 1) at 6:56 PM ET
at $3.00
Alert· 1d ago 21.4× RVOL
ALT hit 21.380x RVOL at 6:56 PM ET
at $3.01
Alert· 2d ago +0.5% vs EMA
$ALT near 200 EMA: +0.51% from 200 EMA at 1:13 PM ET
at $3.00

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ALT stock FAQ

Why is $ALT down today?

ALT is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 3 unusual-volume and momentum alerts on ALT today, peaking at 20.5x its normal volume.

What is the ALT stock price today?

ALT last traded at $2.98, down 4.49% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).

Where can I see live ALT alerts?

The ALT Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged ALT 155 times in the last 30 days.

What exchange is ALT on?

ALT (Altimmune, Inc. Common Stock) trades on XNAS, with a market cap of about $578M.

Is ALT good for day trading?

That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge ALT for yourself. This is not investment advice.

Live data from TheDesperateTrader scanner. Not investment advice.