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NASDAQ:SPRO

Spero Therapeutics (SPRO) Stock Price, News & Analysis

Spero Therapeutics logo
$2.76 +0.32 (+13.11%)
Closing price 05/14/2026 04:00 PM Eastern
Extended Trading
$2.73 -0.03 (-1.23%)
As of 04:09 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
$2.37
$2.76
50-Day Range
$2.24
$2.86
52-Week Range
$0.63
$3.22
Volume
1.61 million shs
Average Volume
437,841 shs
Market Capitalization
$159.80 million
P/E Ratio
11.50
Dividend Yield
N/A
Price Target
N/A
Consensus Rating
Reduce

Company Overview

Spero Therapeutics Stock Analysis - MarketRank™

See Top-Rated MarketRank™ Stocks
30th Percentile Overall Score

SPRO MarketRank™: 

Spero Therapeutics scored higher than 30% of companies evaluated by MarketBeat, and ranked 753rd out of 866 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 11.50, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 44.60.

  • Price to Earnings Ratio vs. Sector

    The P/E ratio of Spero Therapeutics is 11.50, which means that it is trading at a less expensive P/E ratio than the Medical sector average P/E ratio of about 20.89.

  • Price to Book Value per Share Ratio

    Spero Therapeutics has a P/B Ratio of 2.63. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.

  • Percentage of Shares Shorted

    2.16% 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 3.06, 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 59.91%, 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 1.36. 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 0.61 average news sentiment score of Medical companies.
  • News Coverage This Week

    MarketBeat has tracked 4 news articles for Spero Therapeutics this week, compared to 1 article on an average week.
  • Search Interest

    1 people have searched for SPRO on MarketBeat in the last 30 days.
  • 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 $63,352.00 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

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SPRO Stock Analysis - Frequently Asked Questions

Spero Therapeutics' stock was trading at $2.33 at the start of the year. Since then, SPRO shares have increased by 18.5% and is now trading at $2.76.

Spero Therapeutics, Inc. (NASDAQ:SPRO) announced its earnings results on Wednesday, May, 13th. The company reported ($0.13) EPS for the quarter, beating analysts' consensus estimates of ($0.18) by $0.05. The company earned $0.26 million during the quarter, compared to analysts' expectations of $0.26 million. Spero Therapeutics had a trailing twelve-month return on equity of 38.62% and a net margin of 24.90%.

Spero Therapeutics (SPRO) raised $82 million in an 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.

Spero Therapeutics' top institutional shareholders include Renaissance Technologies LLC (2.05%). 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
5/15/2026
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
11.50
Forward P/E Ratio
N/A
P/E Growth
N/A
Net Income
$8.57 million
Net Margins
24.90%
Pretax Margin
13.22%
Return on Equity
38.62%
Return on Assets
24.68%

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
2.39
Cash Flow
$0.17 per share
Price / Cash Flow
16.04
Book Value
$1.05 per share
Price / Book
2.63

Miscellaneous

Outstanding Shares
57,900,000
Free Float
54,716,000
Market Cap
$159.80 million
Optionable
Optionable
Beta
1.43

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This page (NASDAQ:SPRO) was last updated on 5/15/2026 by MarketBeat.com Staff.
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