Biotech initial public offerings hit a record high in 2018 with big deals like Moderna Therapeutics' $604 million offering in December and Allogene Therapeutics' $324 million offering in October. In total, there have been 58 biotech IPOs in 2018, raising a total of $6.3 billion, according to Renaissance Capital. Here are the 10 IPOs that made the biggest splash and broke records in 2018. It's been a massive year for biotech companies to go public. Companies have raised more than $6.3 billion in 58 deals, according to Renaissance Capital.