Killer Bs

Massive financings for Dimension Therapeutics Inc. and Jounce Therapeutics Inc. have pushed the average size of a series B round this year north of $31 million.

The figure is roughly on par with the 2014 B round average of $31.6 million and far outpaces the previous 15 years, which saw averages ranging from $14.4 million to $25.8 million (see "Average series B," page 19). ...