$SPRO
Spero Therapeutics, Inc. Common Stock
XNAS
Why is SPRO up today? It is at $1.26 (+0.00%), and our scanner flagged it 34 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment SPRO spikes, and full due diligence on SPRO — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $1.26
- Change today
- +0.00%
- Previous close
- $1.26
- 52-week range
- $1.08 – $3.08
- Market cap
- $73M
- Institutional own.
- 34.92%
- Total held
- 37.8%
- Tradeable float
- 36.0M 62% of shares · after 3% insiders + 35% institutions
- Short interest
- 2.1M ▼ -26% vs prior · as of 2026-07-15
- Short % of float
- 5.9%
- Days to cover
- 1.3d
- Avg daily volume
- 748K
- Next earnings
- Aug 12 · in 6d (after close)
- Exchange
- XNAS
- 5m
- 0.4x
- 15m
- 1.2x
- 1h
- 0.7x
- 1D
- 0.2x
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Why is $SPRO moving today?
Here is the latest on SPRO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for SPRO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystSpero Therapeutics and Innovent Biologics Announce Exclusive License for SP001 (IBI355), aReported milestone payments, totaling approximately US$1.1 billion, as well as tiered royalties on net salesReported payments, bringing total value of the deal to approximately US$1.1 billion. Innovent is also eligible to receive tiered royalties on net sales generated in Spero’s licensed territories., from the latest SEC filing. Read it →$SPRO Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$SPRO Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
SPRO stock FAQ
Why is $SPRO moving today?
Here is the latest on SPRO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for SPRO 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 SPRO stock price today?
SPRO last traded at $1.26, up 0.00% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
When does SPRO report earnings?
Spero Therapeutics, Inc. Common Stock (SPRO) is next expected to report earnings on Wednesday, August 12, 2026 (after close), about 6 days away. Earnings reports often cause large overnight gaps, so many traders manage risk around the date. The date can shift until the company officially confirms it.
Where can I see live SPRO alerts?
The SPRO 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 SPRO 34 times in the last 30 days.
What exchange is SPRO on?
SPRO (Spero Therapeutics, Inc. Common Stock) trades on XNAS, with a market cap of about $73M.
Is SPRO 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 SPRO for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.