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Nasdaq:SPRO
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Spero Therapeutics (SPRO)

Nasdaq • SPRO • US84833T1034

1.02Last close
Market Closed
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ORTEX Data Highlights

As of Oct 27, 2026, ORTEX estimated 1.9% of free float sold short, 1.8 days to cover, cost to borrow 0.48%. Sign up for live short interest data.

Market Cap

59.4m USD | # 9078 in US

Volume

555.49k shares | 645.44k USD

Shares Outstanding

58.23m

Free Float Shares

80.88% | 47.1m

DB:2HA

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SPRO key data

Spero Therapeutics (Nasdaq: SPRO) has a market capitalization of $59.4M. Last close $1.02 (as of 2026-11-12); 52-week range $0.96 to $3.08. ORTEX data as of 2026-10-27: short interest was 1.86% of free float, 1.8 days to cover and the average cost to borrow was 0.48%. Sign up for live short interest data.

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