SPRO
Spero Therapeutics, Inc. Common Stock
stockNASDAQ
At CloseOct 2, 2026 3:59:56 PM EDT
1.19USD-5.556%(-0.07)906,916
Pre-marketOct 2, 2026 8:37:30 AM EDT
1.25USD-0.794%(-0.01)
After-hoursOct 2, 2026 4:01:30 PM EDT
1.20USD+0.840%(+0.01)
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69.30M
Healthcare
Biotechnology
CEO
Ankit Mahadevia
HQ
Cambridge, MA, USA
Previous Close
$1.26
Beta
1.46
52-Week High
$3.08 2026-05-27
52-Week Low
$1.08 2026-07-24
SMA 50
$1.20
SMA 200
$2.11
Avg. Vol 10D
1.37M
Avg. Vol 30D
692,917
Avg. Vol 90D
1.31M
Relative Vol
1.31
58.23M
46.38M
79.65%
976,488
2.11%
3.06
50%/50%
38.25%
22.76%
0.4100%
3,400,000
15,213
10,430
38,252
Nov 12, 2026 (38d)
Oct 2, 2026
Spero Therapeutics Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) · 
GlobeNewswire Inc.
SPRO Profile
spero therapeutics is focused on the development of novel therapies to treat highly resistant bacterial infections. the culture at spero is one of respect, action, collaboration and transparency. spero team members are leaders in the field, and have the ability and desire to be a part of a team. at spero, a feeling that we are part of something groundbreaking and innovative fuels our approach.
SPRO Performance
| Period | Price | Date | Change | Beta |
|---|---|---|---|---|
| 1M | 1.21 | 2026-09-04 | -1.65% | 1.385 |
| 3M | 2.19 | 2026-07-06 | -45.66% | 1.032 |
| 6M | 2.61 | 2026-04-06 | -54.41% | 1.734 |
| 1Y | 2.05 | 2025-10-03 | -41.95% | 1.457 |
| 2Y | 1.30 | 2024-10-04 | -8.46% | — |
| 5Y | 18.08 | 2021-10-04 | -93.42% | 0.767 |
SPRO Stock Summary
Spero Therapeutics, Inc. Common Stock (NASDAQ:SPRO) stock price today is $1.19, and today's volume is 906,916. SPRO is down 5.556% today. The 30 day average volume is 692,917. SPRO market cap is $69.30M with 58.23M shares outstanding.