$STRO
Sutro Biopharma, Inc.
XNAS•Health Care•Biological Products, (No Diagnostic Substances)
Why is STRO down today? It is at $21.04 (-0.57%), and our scanner flagged it 29 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment STRO spikes, and full due diligence on STRO — key stats, earnings, dilution and insider activity. Free.
Get free $STRO alerts the moment volume spikes
Our scanner flagged $STRO 29 times in the last 30 days. Create a free account to track $STRO, 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.
No card · 5 premium days · join 800+ traders
Key Stats
- Price
- $21.04
- Change today
- -0.57%
- Previous close
- $21.16
- 52-week range
- $7.15 – $43.85
- Market cap
- $349M
- Shares outstanding
- 16.6M SEC · as of 2026-08-07 · 16d
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 1.7M ▲ +6% vs prior · as of 2026-07-31
- Days to cover
- 6.3d
- Avg daily volume
- 203K
- Sector
- Health Care
- Industry
- Biological Products, (No Diagnostic Substances)
- Exchange
- XNAS
- 5m
- 0.4x
- 15m
- 0.3x
- 1h
- 0.3x
- 1D
- --
Get free STRO + market alerts in your inbox
The top plays and unusual-volume catches our scanner flags, emailed to you. No account needed.
No spam. Unsubscribe anytime. Not investment advice.
Why is $STRO down today?
Here is the latest on STRO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for STRO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystSUTRO BIOPHARMA, INC.: Q2 FY2026 results, three months to Jun 30, 2026, from an SEC filing. Read it →Latest filingSC 13G/APassive 5%+ stake updatedAug 14, 2026 · 8 days agoDilution watch
Active shelfAt-the-market (ATM) offering active — the company can keep selling new shares into the market over time (ongoing). If $STRO runs, these filings show who may be positioned to sell new or newly-registered shares into the move.
- 4,014,452 new shares · At-the-market (ATM) program — sells new shares into the market gradually over time · About $100.0M in size · Priced at $24.91/share
- At-the-market (ATM) program — sells new shares into the market gradually over time · About $100.0M in size
Sourced from SEC EDGAR filings (last 9 months); terms read straight from the filing text where available. Ongoing = an at-the-market (ATM) program still selling over time or a live shelf, so it can keep diluting; Completed = a one-time priced sale that already finished. A shelf (S-3) stays effective ~3 years. Form type signals dilution capacity, not an exact share count, and we can't confirm how much of a shelf or ATM remains unused. Not investment advice.
$STRO Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$STRO Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
Stocks similar to STRO
Comparable names in biological products, (no diagnostic substances), closest in size first.
STRO stock FAQ
Why is $STRO down today?
Here is the latest on STRO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for STRO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the STRO stock price today?
STRO last traded at $21.04, down 0.57% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live STRO alerts?
The STRO 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 STRO 29 times in the last 30 days.
What exchange is STRO on?
STRO (Sutro Biopharma, Inc.) trades on XNAS, with a market cap of about $349M in the BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES) sector.
Is STRO 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 STRO for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.