The Wheeler Dealers(1963)

He really wasn't out to make $1,000,000. He already had that!

Henry J. Tyroon leaves Texas, where his oil wells are drying up, and arrives in New York with a lot of oil money to play with in the stock market. He meets stock analyst Molly Thatcher, who tries to ignore the lavish attention he spends on her but, in the end, she falls for his charm.