New York (CNN Business) President Donald Trump took full ownership of the stock market boom. That unusual strategy is backfiring now that markets are crumbling.

Trump held up the market as an objective barometer of his presidency. He claimed each market record as a validation of his policies.

"Stock Market at all-time high. That doesn't just happen!" Trump tweeted on August 3, 2017.

But linking the success of the White House to the stock market was always a risky strategy. The market is not the economy. And markets are notoriously fickle.