The acquisition announcement by Biogen has led to a positive market reaction for Reata, causing its shares to trade higher. This is a common response as acquisitions often imply a vote of confidence in the acquired company's value.

While the news is directly about Reata, Biogen's decision to acquire the company could have implications for its own stock. The impact could be positive if the market perceives the acquisition as a good strategic move, or negative if the cost of acquisition is deemed too high or the synergy is questioned.