A stockbroker was cold calling about a junk stock and found a taker. "I think this one will really move," said the broker, "it's only $1 a share."
"Buy me 1000 shares." said the client.
The next day the stock was at $2. The client called the broker and said, "You were right, give me 5,000 more shares."
The next day the client looked in the paper and the stock was at $4. The client ran to the phone and called the broker, "Get me 10,000 more shares!"
The next day the client looked in the paper and the stock was at $9. Seeing what a great profit he had in just a few days, the client ran to the phone and told the broker, "Sell all my shares!"
The broker said, "To who? You were the only one buying that stock."