revlis .. Of course you know there is no reason that the price should go up after a stock split. Investors still pay EXACTLY the same price for a given percentage ownership in the company.
There was a time when individual investors thought that it was cheaper to buy into the company when it split but I think the sophistication level of most individual investors has gone well past that. I'm not suggesting that everyone should adopt Buffet's approach but I don't see any value in splitting stock at low levels, say under $100.