Ownership history in BB BIOTECH AG · 34 quarters on record
This page tracks every 13F SEC filing in which BB BIOTECH AG reported a position in Isis Pharmaceuticals COM (IONS). 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 | REDUCED | 7,725,000 | -1,016,334 | -11.6% | 15.76% | $627.0M | $81.17 |
| 2018 Q4 | ADDED | 8,741,334 | +75,000 | +0.9% | 15.14% | $472.6M | $54.06 |
| 2018 Q3 | UNCHANGED | 8,666,334 | — | 0% | 11.83% | $447.0M | $51.58 |
| 2018 Q2 | ADDED | 8,666,334 | +150,000 | +1.8% | 10.43% | $361.1M | $41.67 |
| 2018 Q1 | ADDED | 8,516,334 | +380,000 | +4.7% | 10.37% | $375.4M | $44.08 |
| 2017 Q4 | ADDED | 8,136,334 | +274,400 | +3.5% | 11.52% | $409.3M | $50.30 |
| 2017 Q3 | ADDED | 7,861,934 | +507,839 | +6.9% | 11.03% | $398.6M | $50.70 |
| 2017 Q2 | REDUCED | 7,354,095 | -107,200 | -1.4% | 11.43% | $374.1M | $50.87 |
| 2017 Q1 | ADDED | 7,461,295 | +548,123 | +7.9% | 9.81% | $299.9M | $40.20 |
| 2016 Q4 | REDUCED | 6,913,172 | -250,000 | -3.5% | 12.25% | $330.7M | $47.83 |
As of 2025 Q4 — sorted by position size