George Soros acquired 17.5 Thousand Regeneron Pharmaceuticals shares worth $15.8 Million. That's 0.58% of their equity portfolio (40th largest holding). The first Regeneron Pharmaceuticals trade was made in Q3 2016. Since then George Soros bought shares one more times and sold shares on one occasions. The stake costed the investor $14.4 Million, netting the investor a gain of 9.4% so far.