This was the stock's fourth consecutive day of gains.

DekaBank Deutsche Girozentrale increased its stake in Regeneron Pharmaceuticals by 4.7% this quarter, now holding 221,176 ...

Regeneron Pharmaceuticals sees strength in Dupixent, oncology gains, and major buybacks despite setbacks. Find out why REGN ...

Impax Asset Management significantly reduced its position in Regeneron Pharmaceuticals by 53% in the first quarter, selling 1 ...

This was the stock's second consecutive day of losses.