I opened an small balance account with Robinhood and have been using it for two months or so. As far as being "safe", your cash balance is as safe as with any other brokers insured under SPIC up to $250000. read more
Also, apparently they are members of FINRA and SIPC, so your small investments should be safe. For anything too big, of course, you wouldn't use the startup. read more
Robinhood is not the first brokerage to do zero-commission trades. Others have tried and failed after not finding enough revenue, but Robinhood appears to be on track to succeed. They’ve made trading stocks as easy as using Instagram or Twitter. That’s not a good thing, according to the pros. read more