Note that on Robinhood you're only entering a "pre-ipo" bid but are not participating in the ipo -- i.e., you aren't guaranteed that your order will fill at any point

Source: https://support.robinhood.com/hc/en-us/articles/115000902306...

This is far more risky than FB IPO. How high it goes is anybody's guess (outside management team).

Trying to wrap my head around why this is any different than Twitter.

this valuation expert from NYU puts the value at $13.3B (dramatically lower than the stated IPO price)

http://aswathdamodaran.blogspot.com/2017/02/a-snap-story-val...

It's much much closer to a 50/50 gamble than a smart buy: all intra-day trading is, unless you have a quantifiable competitive advantage.