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NASDAQ:SPRO

Spero Therapeutics (SPRO) Stock Price, News & Analysis

Spero Therapeutics logo
$2.42 -0.08 (-3.20%)
Closing price 05/5/2026 04:00 PM Eastern
Extended Trading
$2.45 +0.03 (+1.24%)
As of 04:56 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

About Spero Therapeutics Stock (NASDAQ:SPRO)

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Key Stats

Today's Range
$2.41
$2.59
50-Day Range
$2.17
$2.86
52-Week Range
$0.57
$3.22
Volume
505,629 shs
Average Volume
476,060 shs
Market Capitalization
$140.12 million
P/E Ratio
20.17
Dividend Yield
N/A
Price Target
N/A
Consensus Rating
Reduce

Company Overview

Spero Therapeutics Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
24th Percentile Overall Score

SPRO MarketRank™: 

Spero Therapeutics scored higher than 24% of companies evaluated by MarketBeat, and ranked 730th out of 856 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation.

  • Consensus Rating

    Spero Therapeutics has received a consensus rating of Reduce. The company's average rating score is 1.50, and is based on no strong buy ratings, no buy ratings, 1 hold rating, and 1 sell rating.

  • Amount of Analyst Coverage

    Spero Therapeutics has only been the subject of 1 research reports in the past 90 days.

  • Read more about Spero Therapeutics' stock forecast and price target.
  • Price to Earnings Ratio vs. the Market

    The P/E ratio of Spero Therapeutics is 20.17, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 38.28.

  • Price to Earnings Ratio vs. Sector

    The P/E ratio of Spero Therapeutics is 20.17, which means that it is trading at a less expensive P/E ratio than the Medical sector average P/E ratio of about 29.02.

  • Price to Book Value per Share Ratio

    Spero Therapeutics has a P/B Ratio of 2.30. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.

  • Read more about Spero Therapeutics' valuation and earnings.
  • Percentage of Shares Shorted

    1.35% of the float of Spero Therapeutics has been sold short.
  • Short Interest Ratio / Days to Cover

    Spero Therapeutics has a short interest ratio ("days to cover") of 1.39, which is generally considered an acceptable ratio of short interest to trading volume.
  • Change versus previous month

    Short interest in Spero Therapeutics has recently increased by 21.87%, indicating that investor sentiment is decreasing significantly.
  • Dividend Yield

    Spero Therapeutics does not currently pay a dividend.

  • Dividend Growth

    Spero Therapeutics does not have a long track record of dividend growth.

  • News Sentiment

    Spero Therapeutics has a news sentiment score of 0.97. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a higher news sentiment than the 0.56 average news sentiment score of Medical companies.
  • News Coverage This Week

    MarketBeat has tracked 2 news articles for Spero Therapeutics this week, compared to 1 article on an average week.
  • MarketBeat Follows

    Only 2 people have added Spero Therapeutics to their MarketBeat watchlist in the last 30 days. This is a decrease of 0% compared to the previous 30 days.
  • Insider Buying vs. Insider Selling

    In the past three months, Spero Therapeutics insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $207,484.00 in company stock.

  • Percentage Held by Insiders

    5.50% of the stock of Spero Therapeutics is held by insiders.

  • Percentage Held by Institutions

    25.60% of the stock of Spero Therapeutics is held by institutions.

  • Read more about Spero Therapeutics' insider trading history.
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SPRO Stock News Headlines

SpaceX eyes a 1.75 trillion valuation - here's what to know
Elon Musk's team has quietly filed confidential paperwork with the SEC for what Bloomberg estimates could be a $1.75 trillion IPO - larger than Saudi Aramco and any tech offering in history. CNBC calls it 'the big market event of 2026.' According to former tech executive and angel investor Jeff Brown, there's a way to claim a stake before the public filing drops, starting with as little as $500.tc pixel
See More Headlines

SPRO Stock Analysis - Frequently Asked Questions

Spero Therapeutics' stock was trading at $2.33 at the beginning of the year. Since then, SPRO shares have increased by 3.9% and is now trading at $2.42.

Spero Therapeutics, Inc. (NASDAQ:SPRO) issued its earnings results on Thursday, March, 26th. The company reported $0.53 earnings per share (EPS) for the quarter, topping analysts' consensus estimates of ($0.20) by $0.73. The company earned $41.30 million during the quarter, compared to the consensus estimate of $26 million. Spero Therapeutics had a trailing twelve-month return on equity of 22.53% and a net margin of 12.83%.

Spero Therapeutics (SPRO) raised $82 million in an initial public offering on Thursday, November 2nd 2017. The company issued 5,500,000 shares at a price of $14.00-$16.00 per share. BofA Merrill Lynch, Cowen and Stifel acted as the underwriters for the IPO and Oppenheimer & Co. was co-manager.

Shares of SPRO stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services.

Based on aggregate information from My MarketBeat watchlists, some other companies that Spero Therapeutics investors own include Invesco QQQ (QQQ), SPDR S&P 500 ETF Trust (SPY), SPDR Dow Jones Industrial Average ETF Trust (DIA), Meta Platforms (META), NVIDIA (NVDA), Editas Medicine (EDIT) and Advanced Micro Devices (AMD).

Company Calendar

Last Earnings
3/26/2026
Today
5/06/2026
Next Earnings (Estimated)
5/13/2026
Fiscal Year End
12/31/2026

Industry, Sector and Symbol

Stock Exchange
NASDAQ
Sector
Medical
Industry
MED - BIOMED/GENE
Sub-Industry
Pharmaceutical Products
Current Symbol
NASDAQ:SPRO
CIK
1701108
Fax
N/A
Employees
150
Year Founded
2013

Profitability

EPS (Trailing Twelve Months)
$0.12
Trailing P/E Ratio
20.17
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
$8.57 million
Net Margins
12.83%
Pretax Margin
13.22%
Return on Equity
22.53%
Return on Assets
13.04%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
7.59
Quick Ratio
7.59

Sales & Book Value

Annual Sales
$66.80 million
Price / Sales
2.10
Cash Flow
$0.15 per share
Price / Cash Flow
16.43
Book Value
$1.05 per share
Price / Book
2.30

Miscellaneous

Outstanding Shares
57,900,000
Free Float
54,716,000
Market Cap
$140.12 million
Optionable
Optionable
Beta
1.43

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This page (NASDAQ:SPRO) was last updated on 5/6/2026 by MarketBeat.com Staff.
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