SION
Sionna Therapeutics, Inc. Common Stock
stockNASDAQ
At CloseOct 2, 2026 3:59:59 PM EDT
4.93USD-3.048%(-0.16)1,159,021
Pre-marketOct 2, 2026 9:28:30 AM EDT
5.17USD+1.672%(+0.09)
After-hoursOct 2, 2026 4:13:30 PM EDT
4.98USD+1.014%(+0.05)
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222.45M
Previous Close
$5.10
Beta
1.10
52-Week High
$54.97 2026-08-07
52-Week Low
$4.01 2026-08-10
SMA 50
$15.28
SMA 200
$33.80
Avg. Vol 10D
1.35M
Avg. Vol 30D
1.44M
Avg. Vol 90D
1.66M
Relative Vol
0.81
45.21M
26.61M
58.85%
3,966,138
14.90%
3.10
57%/43%
53.10%
33.65%
0.4100%
1,600,000
39,094
39,806
99,175
Nov 4, 2026 (30d)
Sep 24, 2026
Sep 21, 2026
Ra Capital Management sells $21.8m in Sionna Therapeutics shares · 
Investing.com
Sep 18, 2026
Is This Biotech Stock Too Cheap to Ignore After Its Latest Pullback? · 
The Motley Fool
Small-cap stocks with weak momentum grades and steep YTD losses · 
Seeking Alpha
SION Performance
| Period | Price | Date | Change | Beta |
|---|---|---|---|---|
| 1W | 5.12 | 2026-09-28 | -3.91% | -5.657 |
| 1M | 7.18 | 2026-09-04 | -31.48% | 1.662 |
| 3M | 43.12 | 2026-07-06 | -88.59% | 1.786 |
| 6M | 37.38 | 2026-04-06 | -86.84% | 1.753 |
| 1Y | 30.01 | 2025-10-03 | -83.61% | 1.105 |
| 2Y | 25.00 | 2025-02-07 | -80.32% | — |
SION Stock Summary
Sionna Therapeutics, Inc. Common Stock (NASDAQ:SION) stock price today is $4.92, and today's volume is 1,160,195. SION is down 3.529% today. The 30 day average volume is 1.44M. SION market cap is $222.45M with 45.21M shares outstanding.