ALNY
Alnylam Pharmaceuticals, Inc.
stockNASDAQ
At CloseOct 2, 2026 3:59:53 PM EDT
219.90USD-4.879%(-11.28)1,661,854
Pre-marketOct 2, 2026 9:19:30 AM EDT
231.93USD+0.324%(+0.75)
After-hoursOct 2, 2026 4:39:30 PM EDT
219.72USD-0.082%(-0.18)
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29.42B
Healthcare
Biotechnology
CEO
John Maraganore
HQ
Cambridge, MA, USA
749
Previous Close
$231.18
Beta
0.39
52-Week High
$495.55 2025-10-20
52-Week Low
$197.81 2026-07-30
SMA 50
$241.49
SMA 200
$302.88
Avg. Vol 10D
1.24M
Avg. Vol 30D
1.55M
Avg. Vol 90D
1.66M
Relative Vol
1.08
133.81M
133.23M
99.57%
7,194,097
5.40%
4.13
54%/46%
54.38%
43.83%
0.2900%
1,200,000
3
2,891
19,753
Oct 29, 2026 (24d)
Oct 2, 2026
Notable ETF Inflow Detected - TCAF, CNP, ALNY, KDP · 
BNK Invest
Sep 28, 2026
Sep 20, 2026
Sep 18, 2026
Sep 17, 2026
ALNY Profile
alnylam is developing an entirely new class of innovative medicines based on a breakthrough discovery in biology known as rna interference, or rnai. with rnai technology, we have the opportunity to treat disease and impact the lives of patients in a fundamentally new way by silencing disease-causing genes upstream of today's medicines.
ALNY Performance
| Period | Price | Date | Change | Beta |
|---|---|---|---|---|
| 1W | 255.36 | 2026-09-28 | -13.90% | -3.708 |
| 1M | 266.11 | 2026-09-04 | -17.38% | 1.410 |
| 3M | 313.04 | 2026-07-06 | -29.77% | -0.557 |
| 6M | 330.34 | 2026-04-06 | -33.44% | -0.010 |
| 1Y | 456.35 | 2025-10-03 | -51.82% | 0.390 |
| 2Y | 267.99 | 2024-10-04 | -17.96% | — |
| 5Y | 195.02 | 2021-10-04 | +12.74% | 0.351 |
ALNY Stock Summary
Alnylam Pharmaceuticals, Inc. (NASDAQ:ALNY) stock price today is $219.87, and today's volume is 1,661,854. ALNY is down 4.894% today. The 30 day average volume is 1.55M. ALNY market cap is $29.42B with 133.81M shares outstanding.