Is this part of the reason why Warren Buffett is so successful with picking stocks?
When Warren Buffett buys a stock and people find out later on that he bought it some people will think "Warren Buffett bought this stock, so it must be a good investment". When many people have that same idea then the demand of that stock that Buffett bought initially should rise, and with it the price should rise.
This would lead me to think that whatever stock Warren Buffett buys, its value would automatically rise because so many people believe in what he does and then would want to buy the stock, increasing its price.
Is this part of the reason why Warren Buffett has been so successful?