Spero Therapeutics, Inc.

SPRO

Held by 0 specialist biotech funds

Short interest: 1.2% of float.

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Signal Score

0.0/10

No fund positions

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No recent insider activity●●

No upcoming catalysts●●

Not held by tracked funds●●

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Fund Holdings

SPRO is not currently held by any of our tracked specialist biotech funds.

Fund positions update quarterly with new 13F filings. Explore fund convergence to see which tickers multiple funds hold.

Short Interest

Shorts covering

Short Shares

537K

Change

-24.9%

Days to Cover

1.7

% of Float

1.2%

Settlement

Mar 13, 2026

Short interest over 2 periods

Catalysts

No catalysts tracked.

Activist Filings

SC 13G/ARA Capital Management0.0%Feb 14, 2019

Position Details

No position data available.

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Insider Signals

No insider purchases or sales detected in the past 90 days.

Research Links

Yahoo Finance →SEC EDGAR →ClinicalTrials.gov →

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