Social Capital files for two more blank check company IPOs

VC firm Social Capital has filed to take public two more special purpose acquisition corporations ("blank check companies"), aiming to raise at least $300 million and $600 million respectively, according to new SEC filings.

Why it matters: Social Capital and partner Hedosophia first executed this unusual move a couple of years ago, culminating with the vehicle's acquisition of Virgin Galactic last year, taking the private space exploration company public at a valuation of about $1.5 billion.

Go deeper:

• Social Capital says its 'IPO 2.0' is a better process for unicorns
• Ex Glu Mobile CEO has a blank check company