The stock market in the United States is referred to as the “Yankee market.” Yankee market is a phrase used by non-residents of the United States to allude to the slang name for an American, a Yankee (or Yank), which is often used as a humorous, though sometimes pejorative, reference to Americans.
The phrase “Yankee market” originated in business slang but has now gained widespread acceptance, similar to how “bulldog market” refers to the United Kingdom market and “samurai market” refers to the Japanese market.