Avista Healthcare Public Acquisition, a blank check company formed by Avista to acquire a health care company, raised $300 million by offering 30 million shares at $10, as expected. Avista was behind 2014 IPO INC Research (INCR) and 2015 IPO Lantheus (LNTH). The SPAC plans to list on the Nasdaq under the symbol AHPAU. Credit Suisse acted as a lead manager on the deal.