11 /100
LOW RISK
Score updated May 29, 2026

SPRO — Spero Therapeutics, Inc. Dilution Risk Tracker

Track SPRO dilution risk with DilutionWatch's stock tracker. DilutionScore™ measures dilution risk across 5 factors — lower scores indicate higher risk of share dilution.

⚠️ Not financial advice. Do your own research before making any investment decisions.

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📊 Score Breakdown

📋 Offering Ability
20
💰 Cash Runway
0
📊 Float Risk
10
⚠️ Warrant Exposure
15
🔄Convertible Debt

🌦️ Dilution Forecast

☀️
Clear
No significant dilution signals
0%
No significant dilution signals detected for SPRO.
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💹 Market Data

Market Cap$167.91M
Shares Outstanding57.90M
Float47.34M
Cash$56.13M
Debt$2.47M
Short InterestN/A

🏛 Institutional Holdings

QoQ: ↑ 87.5% shares (2025Q4 vs prior)
56 institutional holders · 21.38M shares
#1 GSK plc 9.19M shares
#2 Pfizer Inc 2.36M shares
#3 VANGUARD GROUP INC 2.08M shares
+ 17 more holders Sign up free to view →

📉 Short Interest

Short Interest1.18M
Days to Cover3.1
% of Float2.5%
FINRA data as of Apr 30, 2026

📁 Recent SEC Activity

xbrl XBRL CONVERTIBLE Dec 31, 2022
Full SEC filing analysis available with free account

📰 Recent News

No recent news
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🔬 More Research for SPRO
📊 SPRO FDA Catalyst Timeline & Biotech Grade — BiotechSigns 📡 SPRO Signal Convergence & Dark Pool Activity — StonkWhisper

Part of the Guerilla Finance research network. Cross-reference multiple data sources for better due diligence.