There is a fairly recent quote from him that says

There is a fairly recent quote from him that says something to the effect of him having to invest in "elephants" now and if he were starting from the beginning he would invest in smaller companies. I don't know how you choose to interpret that but it certainly does not rule out micro cap stocks.

My comments are only my opinion and are not to be used for investment advice. Please conduct your own due diligence before choosing to buy or sell any investment.