US STOCKS-Wall St drops as health, financials weigh
* Fed Chair Yellen testifies before Congressional committee
* IMF to cut U.S. growth forecast for 2016
* Nike drops on disappointing future orders
* Indexes down: Dow 0.12 pct, S&P 0.18 pct, Nasdaq 0.21 pct (Updates to early afternoon)
By Yashaswini Swamynathan
Sept 28 (Reuters) - Wall Street was lower on Wednesday as health stocks weighed and financials fell after Federal Reserve Chair Janet Yellen said the central bank was considering changes to the annual stress test.
Yellen said the Fed was looking at a more risk-sensitive, firm-specific approach to the test that would raise capital requirements for big U.S. banks based on their test results.
Shares of JPMorgan, Bank of America and Citigroup were down between 0.2-0.5 percent.
Healthcare sector weighed the most on the benchmark S&P 500 index as Bristol-Myers and Amgen fell 1.2 percent each. The index had risen 0.7 percent on Tuesday. Continuación...