TotalMarketCap

Spero Therapeutics

SPRONasdaq United StatesHealth CareBiotechnology: Pharmaceutical Preparations

Market cap

$59.306 M

$1.02 -4.82%

Close of 6 Nov 2026

As of 6 Nov 2026, Spero Therapeutics (SPRO) has a market capitalization of $59.3M. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$66.8M

#2622 by revenue

Earnings

$8.57M

#2062 by earnings

Shares outstanding

58,234,827

Latest filing cover page

P/E ratio

6.9

Cap ÷ net income

Biotechnology: Pharmaceutical Preparations, ranked by market cap

All 498 →
  1. #317Tenax TherapeuticsTENX$61.2M
  2. #318Quantum CyberQUCY$60.6M
  3. #319Spero TherapeuticsSPRO$59.3M
  4. #320Oncolytics BiotechONCY$58.6M
  5. #321Gossamer BioGOSS$57.9M

What if Spero Therapeutics were worth as much as…

Open the what-if tool →

Gold $28.2T

$484,879.50

Per share 476,119× higher

Bitcoin $1.53T

$26,235.99

Per share 25,762× higher

Apple $5.02T

$86,130.29

Per share 84,574× 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. Read the methodology.