If you trade stocks you probably have more experience than most people here and I honestly don't know why you would ask a forum if a coin can make you a millionaire, if people knew what coin can make you a millionaire then this game is over. Why don't you just go with BTC? Why throw such amounts in altcoins, most that are still heavily in development and are highly experimental. BTC is quite a proven concept by now and has shown it can withstand all the FUD and government/institutional interference. BTC reaching 50k (a good 7-8x from this price) would make you insane returns that I bet you can't get on that stock market. There's a general culture these days of making money the fastest and most low effort way possible, from the common jack to twitter investors who want multi billion dollar dividends payed out to them. I honestly think you should play it ''safe'' with that kind of money and hope for an early retirement. Or if you really can afford it go spread out your money, make boxes with X amounts to invest:

1. ICO box
2. BTC box
3. Altcoin box