Spero Therapeutics Inc. (SPRO)
Showing Closing Date Range from Oct 16 to Oct 23, 2026 compared to Oct 8 to Oct 15, 2026.
Compare Last 7 Days with Previous Period
Investor Relations:investors.sperotherapeutics.com
Current Period Close
$1.11
Oct 16, 2026 - Oct 23, 2026
Previous Period Close
$1.13
Oct 08, 2026 - Oct 15, 2026
Net Comparison Delta
$-0.02 (-1.77%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(6 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 23, 2026 | $1.11 | Oct 15, 2026 | $1.13 | -1.77% |
| Oct 22, 2026 | $1.13 | Oct 14, 2026 | $1.12 | +0.89% |
| Oct 21, 2026 | $1.17 | Oct 13, 2026 | $1.15 | +1.74% |
| Oct 20, 2026 | $1.22 | Oct 12, 2026 | $1.18 | +3.39% |
| Oct 19, 2026 | $1.12 | Oct 09, 2026 | $1.20 | -6.67% |
| Oct 16, 2026 | $1.10 | Oct 08, 2026 | $1.14 | -3.51% |