NASDAQ · SPRO

Spero Therapeutics, Inc.

Healthcare · Biotechnology

$1.17

Down-$0.02 (-1.68%)

Updated Oct 8, 2026, 5:44 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 7, 2026

Daily close

View OHLC price history

SPRO OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
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
Sep 30, 2026	$1.21	$1.29	$1.20	$1.21	558.21K
Sep 29, 2026	$1.20	$1.22	$1.17	$1.20	334.91K
Sep 28, 2026	$1.22	$1.22	$1.175	$1.19	393.26K
Sep 25, 2026	$1.27	$1.29	$1.21	$1.23	542.77K
Sep 24, 2026	$1.25	$1.29	$1.24	$1.25	476.93K
Sep 23, 2026	$1.36	$1.3977	$1.24	$1.26	1.4M
Sep 22, 2026	$1.30	$1.44	$1.28	$1.36	7.76M
Sep 21, 2026	$1.14	$1.15	$1.12	$1.14	319.1K
Sep 18, 2026	$1.12	$1.21	$1.115	$1.13	501.37K
Sep 17, 2026	$1.14	$1.14	$1.114	$1.12	181.77K
Sep 16, 2026	$1.12	$1.14	$1.10	$1.11	439.64K
Sep 15, 2026	$1.14	$1.151	$1.11	$1.13	225.28K
Sep 14, 2026	$1.13	$1.16	$1.13	$1.14	267.14K
Sep 11, 2026	$1.13	$1.15	$1.13	$1.13	310.63K
Sep 10, 2026	$1.18	$1.18	$1.12	$1.12	569.29K
Sep 9, 2026	$1.20	$1.21	$1.17	$1.17	367.06K