Gossamer Bio spikes 19% in its trading debut

Gossamer Bio opened for trading at $19 a share, an 18.8% premium to its $16 pricing.
The clinical-stage biopharmaceutical raised about $276 million through the sale of 17.25 million share.
Gossamer trades under the ticker "GOSS." 
Gossamer Bio spiked in its trading debut on Friday. 
The clinical-stage biopharmaceutical company that focuses on "discovering, acquiring, developing and commercializing therapeutics in the disease areas of immunology, inflammation and oncology" opened for tr