Spero Therapeutics

SPRONasdaq United States Health Care Biotechnology: Pharmaceutical Preparations

Market cap

$66.388 M

$1.14 +0.89%

Close of 21 Sept 2026

Revenue

$66.8M

#2639 by revenue

Earnings

$8.57M

#2075 by earnings

Shares outstanding

58,234,827

Latest filing cover page

P/E ratio

7.7

Cap ÷ net income

Biotechnology: Pharmaceutical Preparations, ranked by market cap

All 499 →

#335Rein TherapeuticsRNTX$68.5M
#336XBiotechXBIT$66.5M
#337Spero TherapeuticsSPRO$66.4M
#338CleneCLNN$64.5M
#339Boundless BioBOLD$64.4M

What if Spero Therapeutics were worth as much as…

Open the what-if tool →

Gold $30.3T

$519,861.66

Per share 456,019× higher

Bitcoin $1.72T

$29,532.22

Per share 25,905× higher

Nvidia $5.48T

$94,099.33

Per share 82,543× higher

Or at a round number

$100.0M $200.0M $500.0M $1.00B

Where these numbers come from

Share counts and financials for Spero Therapeutics are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 22 Sept 2026. Read the methodology.