Yes he can, or at least nearly the same price with very little slippage. The S&P is not a single illiquid penny stock but a collection of 500 of the most liqui

Yes he can, or at least nearly the same price with very little slippage. The S&P is not a single illiquid penny stock but a collection of 500 of the most liquid investments in the world, and 500 million dollars is a pittance compared to its capitalisation even back in the 80s. Sure, if he had to invest it in half an hour he would move markets - but if he had a year? No slippage from adding 2m a day distributed over 500 stocks...