Free Trial
NASDAQ:SPRO

Spero Therapeutics (SPRO) Stock Price, News & Analysis

Spero Therapeutics logo
$2.11 -0.66 (-23.83%)
Closing price 06/17/2026 04:00 PM Eastern
Extended Trading
$2.33 +0.22 (+10.43%)
As of 06/17/2026 07:58 PM 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)

Advanced

Key Stats

Today's Range
$1.95
$3.05
50-Day Range
$2.11
$2.98
52-Week Range
$1.80
$3.22
Volume
11.05 million shs
Average Volume
861,357 shs
Market Capitalization
$122.17 million
P/E Ratio
8.79
Dividend Yield
N/A
Price Target
N/A
Consensus Rating
Reduce

Company Overview

Spero Therapeutics Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
25th Percentile Overall Score

SPRO MarketRank™: 

Spero Therapeutics scored higher than 25% of companies evaluated by MarketBeat, and ranked 723rd 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 8.79, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 44.55.

  • Price to Earnings Ratio vs. Sector

    The P/E ratio of Spero Therapeutics is 8.79, which means that it is trading at a less expensive P/E ratio than the Medical sector average P/E ratio of about 24.80.

  • Price to Book Value per Share Ratio

    Spero Therapeutics has a P/B Ratio of 2.01. 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

    3.04% 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 1.96, 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 3.60%, indicating that investor sentiment is decreasing.
  • 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 0.59. 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 lower news sentiment than the 0.83 average news sentiment score of Medical companies.
  • News Coverage This Week

    MarketBeat has tracked 1 news article for Spero Therapeutics this week, compared to 1 article on an average week.
  • Search Interest

    5 people have searched for SPRO on MarketBeat in the last 30 days. This is an increase of 400% compared to the previous 30 days.
  • MarketBeat Follows

    5 people have added Spero Therapeutics to their MarketBeat watchlist in the last 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 $63,352.00 in company stock.

  • Percentage Held by Insiders

    2.90% 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.
Receive SPRO Stock News and Ratings via Email

Sign-up to receive the latest news and ratings for Spero Therapeutics and its competitors with MarketBeat's FREE daily newsletter.

SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.

SPRO Stock News Headlines

Trump’s New Dollar revealed
The last time something like this happened was 1974 - a secret deal that quietly determined the financial fate of an entire generation. According to Porter Stansberry, founder of one of the largest independent financial research firms in the world, it is happening again. Fortune calls it 'the biggest change to the world's relationship with the dollar' in a generation. Stansberry says Trump's money reset - enacted through executive orders and a treaty signed by 13 nations in December 2025 called Pax Silica - could determine whether you are enriched or quietly impoverished by the shift already underway.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 decreased by 9.4% and is now trading at $2.11.

Spero Therapeutics, Inc. (NASDAQ:SPRO) issued its quarterly earnings results on Wednesday, May, 13th. The company reported ($0.13) earnings per share (EPS) for the quarter, topping the consensus estimate of ($0.18) by $0.05. The business earned $0.26 million during the quarter, compared to analyst estimates of $0.26 million. Spero Therapeutics had a net margin of 24.90% and a trailing twelve-month return on equity of 35.58%.

Spero Therapeutics (SPRO) raised $82 million in an initial public offering (IPO) 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 served as the underwriters for the IPO and Oppenheimer & Co. was co-manager.

Top institutional investors of Spero Therapeutics include Renaissance Technologies LLC (2.05%), Anson Funds Management LP (0.73%) and OMERS ADMINISTRATION Corp (0.07%). Insiders that own company stock include Sath Shukla, Esther Rajavelu, Ankit Mahadevia, Kamal Hamed and Timothy Keutzer.
View institutional ownership trends
.

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
5/13/2026
Today
6/17/2026
Next Earnings (Estimated)
8/11/2026
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)
$0.24
Trailing P/E Ratio
8.79
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
$8.57 million
Net Margins
24.90%
Pretax Margin
25.33%
Return on Equity
35.58%
Return on Assets
24.95%

Debt

Debt-to-Equity Ratio
N/A
Current Ratio
10.50
Quick Ratio
10.50

Sales & Book Value

Annual Sales
$66.80 million
Price / Sales
1.83
Cash Flow
$0.12 per share
Price / Cash Flow
18.21
Book Value
$1.05 per share
Price / Book
2.01

Miscellaneous

Outstanding Shares
57,900,000
Free Float
56,222,000
Market Cap
$122.17 million
Optionable
Optionable
Beta
1.45

Social Links

Metaverse Stocks And Why You Can't Ignore Them Cover

Thinking about investing in Meta, Roblox, or Unity? Click the link to learn what streetwise investors need to know about the metaverse and public markets before making an investment.

Get This Free Report

This page (NASDAQ:SPRO) was last updated on 6/18/2026 by MarketBeat.com Staff.
From Our Partners