What to expect from Ark Invest's coming 'ARKX' ETF, which ignited a rally for pure-play space stocks

An artist's rendering of WorldView Legion satellites in orbit.

Cathie Wood's Ark Invest is preparing to launch a space exploration ETF, under the ticker ARKX, and speculative trading around the sector's limited number of pure-play public companies revealed which stocks investors expect will be included.

More In Follow the Pros

CNBC ProCathie Wood bought $95 million worth of Zoom Video as stock dropped on Tuesday
CNBC ProCathie Wood is happy about tech's recent ‘reality check’ as she buys more shares of her core plays
CNBC ProHere are Warren Buffett's biggest stock bets