Ownership history in BB BIOTECH AG · 24 quarters on record
This page tracks every 13F SEC filing in which BB BIOTECH AG reported a position in Alnylam Pharmaceuticals, Inc. (ALNY). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2019 Q1 | ADDED | 1,631,089 | +59,700 | +3.8% | 3.83% | $152.4M | $93.45 |
| 2018 Q4 | ADDED | 1,571,389 | +200,851 | +14.7% | 3.67% | $114.6M | $72.91 |
| 2018 Q3 | ADDED | 1,370,538 | +230,000 | +20.2% | 3.17% | $119.9M | $87.52 |
| 2018 Q2 | ADDED | 1,140,538 | +129,200 | +12.8% | 3.24% | $112.3M | $98.49 |
| 2018 Q1 | REDUCED | 1,011,338 | -40,000 | -3.8% | 3.33% | $120.5M | $119.10 |
| 2017 Q4 | REDUCED | 1,051,338 | -60,000 | -5.4% | 3.76% | $133.6M | $127.05 |
| 2017 Q3 | REDUCED | 1,111,338 | -110,000 | -9.0% | 3.61% | $130.6M | $117.49 |
| 2017 Q2 | REDUCED | 1,221,338 | -20,000 | -1.6% | 2.98% | $97.4M | $79.76 |
| 2017 Q1 | ADDED | 1,241,338 | +50,000 | +4.2% | 2.08% | $63.6M | $51.25 |
| 2016 Q4 | UNCHANGED | 1,191,338 | — | 0% | 1.65% | $44.6M | $37.44 |
As of 2025 Q4 — sorted by position size