NASDAQ · SPRO

Spero Therapeutics, Inc.

Healthcare · Biotechnology

$1.11

Down-$0.06 (-5.13%)

Updated Oct 30, 2026, 3:40 AM

SID Score

3.0/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance · SPRO

SPRO price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Oct 29, 2026

Daily close

View OHLC price history

SPRO OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Oct 29, 2026	$1.18	$1.18	$1.11	$1.11	209.73K
Oct 28, 2026	$1.18	$1.18	$1.12	$1.17	338.85K
Oct 27, 2026	$1.08	$1.14	$1.04	$1.14	507.85K
Oct 26, 2026	$1.10	$1.11	$1.06	$1.07	513.87K
Oct 23, 2026	$1.13	$1.13	$1.10	$1.11	316.55K
Oct 22, 2026	$1.16	$1.17	$1.13	$1.13	203.27K
Oct 21, 2026	$1.21	$1.22	$1.165	$1.17	265.71K
Oct 20, 2026	$1.12	$1.24	$1.11	$1.22	679.28K
Oct 19, 2026	$1.09	$1.13	$1.09	$1.12	203.03K
Oct 16, 2026	$1.14	$1.17	$1.09	$1.10	361.28K
Oct 15, 2026	$1.12	$1.14	$1.11	$1.13	233.83K
Oct 14, 2026	$1.15	$1.17	$1.11	$1.12	697.61K
Oct 13, 2026	$1.19	$1.2027	$1.15	$1.15	272.49K
Oct 12, 2026	$1.20	$1.22	$1.165	$1.18	414.26K
Oct 9, 2026	$1.14	$1.21	$1.13	$1.20	439.18K
Oct 8, 2026	$1.20	$1.22	$1.13	$1.14	719.79K
Oct 7, 2026	$1.19	$1.19	$1.16	$1.17	236.67K
Oct 6, 2026	$1.21	$1.236	$1.18	$1.19	347.57K
Oct 5, 2026	$1.17	$1.20	$1.15	$1.16	942.72K
Oct 2, 2026	$1.26	$1.266	$1.1705	$1.19	906.92K
Oct 1, 2026	$1.22	$1.31	$1.195	$1.26	1.04M