NASDAQ · SPRO

Spero Therapeutics, Inc.

Healthcare · Biotechnology

$1.11

Down-$0.02 (-1.77%)

Updated Sep 17, 2026, 5:16 AM

SID Score

2.8/10

Composite research score

Smart Money

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Institutional and insider signal

Price performance

SPRO price history

1M range · 20 trading sessions · Daily adjusted prices

Daily close

View OHLC price history

SPRO OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
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
Sep 8, 2026	$1.21	$1.22	$1.19	$1.19	348.59K
Sep 4, 2026	$1.20	$1.22	$1.185	$1.21	362.98K
Sep 3, 2026	$1.22	$1.23	$1.2008	$1.22	203.33K
Sep 2, 2026	$1.20	$1.2388	$1.20	$1.22	169.51K
Sep 1, 2026	$1.22	$1.22	$1.18	$1.20	385.4K
Aug 31, 2026	$1.20	$1.23	$1.20	$1.22	338.47K
Aug 28, 2026	$1.21	$1.22	$1.1808	$1.20	312.83K
Aug 27, 2026	$1.22	$1.23	$1.18	$1.21	538.49K
Aug 26, 2026	$1.22	$1.228	$1.20	$1.22	154.76K
Aug 25, 2026	$1.23	$1.26	$1.20	$1.23	645.54K
Aug 24, 2026	$1.22	$1.24	$1.20	$1.215	367.27K
Aug 21, 2026	$1.22	$1.2462	$1.21	$1.22	359.14K
Aug 20, 2026	$1.22	$1.27	$1.20	$1.21	558.77K
Aug 19, 2026	$1.20	$1.24	$1.192	$1.23	480.18K