Morningstar

Spero Therapeutics Inc SPRO

Stock XNAS Rating as of Nov 11, 2026

Historical Data

Date	Open	High	Low	Close	Volume
Nov 12, 2026	1.03	1.03	0.99	1.00	316,861
Nov 11, 2026	1.03	1.05	1.01	1.02	158,510
Nov 10, 2026	1.07	1.07	1.01	1.01	183,745
Nov 9, 2026	1.03	1.08	1.00	1.07	394,714
Nov 6, 2026	1.03	1.05	1.01	1.03	186,809
Nov 5, 2026	1.07	1.07	0.96	1.02	712,402
Nov 4, 2026	1.06	1.09	1.05	1.07	210,266
Nov 3, 2026	1.04	1.06	1.03	1.04	204,353
Nov 2, 2026	1.10	1.11	1.03	1.04	433,564
Oct 30, 2026	1.11	1.12	1.05	1.06	309,868
Oct 29, 2026	1.18	1.18	1.11	1.11	209,727
Oct 28, 2026	1.18	1.18	1.12	1.17	338,852
Oct 27, 2026	1.08	1.14	1.04	1.14	507,846
Oct 26, 2026	1.10	1.11	1.06	1.07	513,867
Oct 23, 2026	1.13	1.13	1.10	1.11	316,553
Oct 22, 2026	1.16	1.17	1.13	1.13	203,273
Oct 21, 2026	1.21	1.22	1.17	1.17	265,712
Oct 20, 2026	1.12	1.24	1.11	1.22	679,285
Oct 19, 2026	1.09	1.13	1.09	1.12	203,032
Oct 16, 2026	1.14	1.17	1.09	1.10	361,280
Oct 15, 2026	1.12	1.14	1.11	1.13	233,830
Oct 14, 2026	1.15	1.17	1.11	1.12	697,611
Oct 13, 2026	1.19	1.20	1.15	1.15	272,493
Oct 12, 2026	1.20	1.22	1.17	1.18	414,258

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