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Also trades as: 0HD2.L (LSE) · $vol 0M · DUL.DE (XETRA) · $vol 0M

ALNY NASDAQ

Alnylam Pharmaceuticals, Inc.
1W: -2.4% 1M: -11.1% 3M: -21.1% YTD: -43.1% 1Y: -50.9% 3Y: +41.8% 5Y: +11.7%
$226.79
-0.87 (-0.38%)
After Hours: $226.09 (-0.70, -0.31%)
Weekly Expected Move ±5.6%
$199 $211 $224 $237 $249
NASDAQ · Healthcare · Biotechnology · Tech Score Sell · Power 38 · $30.5B mcap · 133M float · 1.26% daily turnover · Short 40% of daily vol
Credit Risk of going bust: lower than 72% of companies Debt: 4.0% of company value Bonds: $81.8M held by 45 funds → details ▾
Of US companies ranked in the safest four tenths, about 1 in 3,500 filed for bankruptcy within a year (2020-2025).
If the stock fell to about $0.82 (down 99.6%), Alnylam Pharmaceuticals, Inc. would be worth roughly what it owes.
Total debt $1.27B against a stock market value of $30.46B.
Distance to default 7.98 (Merton model): prices to 2026-10-26, balance sheet 2026-06-30, debt counted $505.5M (short-term plus half of long-term), stock volatility 51.3%; Altman Z'' 1.62. A ranking and a back-test, not a forecast.
Bond figures are fund-reported marks (SEC N-PORT) as of Jul 2026. How these are computed.
Oct Typical
☀️
Sunny
+32.2% YTD avg
Midterm Year
⛅
Partly Cloudy
+4.2% YTD avg
2026 Now
⛈️
Stormy
Below typical
20yr Avg YTD
+32.2%
Day 206 of 252
Midterm Year YTD
+4.2%
Presidential cycle avg
2026 YTD
-43.3%
Below 20yr avg
Typical Vol
65%
Annualized
Monthly Weather Forecast
Jan
20yr
💨
+4.7%
Midterm
⛅
+1.4%
50% win 60% vol
Feb
20yr
⛈️
+5.0%
Midterm
☀️
+6.6%
40% win 50% vol
Mar
20yr
⛈️
+0.6%
Midterm
⛅
+1.1%
40% win 51% vol
Apr
20yr
⛈️
-2.0%
Midterm
⛈️
-12.0%
35% win 46% vol
May
20yr
💨
+3.8%
Midterm
⛈️
-12.4%
65% win 50% vol
Jun
20yr
💨
+10.6%
Midterm
⛈️
-7.2%
60% win 47% vol
Jul
20yr
💨
+23.4%
Midterm
⛈️
-15.5%
70% win 76% vol
Aug
20yr
💨
+27.8%
Midterm
🌧️
-1.5%
60% win 60% vol
Sep
20yr
💨
+35.4%
Midterm
🌧️
-3.5%
50% win 62% vol
Oct
20yr
⛈️
+30.3%
Midterm
⛅
+3.8%
43% win 65% vol
Now: -8.1%
Nov
20yr
💨
+37.0%
Midterm
☀️
+12.3%
70% win 56% vol
Dec
20yr
💨
+0.7%
Midterm
🌫️
+0.3%
45% win 46% vol
Seasonality (20yr)
Updated: 2026-10-27
YTD: -43.3%

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms