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SPRO
Spero Therapeutics, Inc.
1.18
−0.05 −3.66%
USD · close Sep 28
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Work order
99
PASS · shorts 99
Insiders, 90 days
0
no open-market filings in 90 days
Congress, 90 days
0 / 0
no disclosures naming it
Big money
0 / 15
none of the tracked funds disclose it
Calls on record
0
nobody we score has called it yet
MKT CAP $69MP/E 8.5DIV YIELD —FCF YIELD —REV TTM $47M −3.3%NET INCOME $7.4MNET CASH —52W 1.11 – 2.98SEC XBRL · TTM TO Invalid Date
Short interest
| Report date | Shares short | Change | % of shares out | Avg daily volume | Days to cover |
|---|---|---|---|---|---|
| 2026-08-31 | 1.2M | −235K | 2.08% | 410K | 3.0 |
| 2026-08-14 | 1.4M | −67K | 2.48% | 761K | 1.9 |
| 2026-07-31 | 1.5M | −601K | 2.60% | 2.5M | 1.0 |
| 2026-07-15 | 2.1M | −751K | 3.63% | 1.6M | 1.3 |