US STOCKS-Futures down on concerns of economic health
* Futures down: Dow 34 pts, S&P 4.25 pts, Nasdaq 14.5 pts
By Yashaswini Swamynathan
Oct 17 (Reuters) - U.S. stock index futures were lower on Monday, weighed down by the lingering effects of Federal Reserve Chair Janet Yellen's speech on Friday that sparked worries about the economy.
* Yellen laid out the deepening concern at the central bank that U.S. economic potential is slipping and may need aggressive steps to rebuild. Her comments, however, did not address interest rates.
* Bank of America, the second-largest U.S. bank by assets, reported on Monday its first increase in profit in three quarters, sending its shares up 1.88 percent in heavy premarket trading.
* Wall Street's gains on Friday, following JPMorgan and Citigroup's market-beating results, were wiped out by Yellen's comments later that day.
* Earnings of S&P 500 companies are expected to have dipped 0.4 percent in the third quarter, but better-than-expected reports could shore up profits for the period.
* Also due is a report on U.S. industrial output, which likely recovered to rise 0.2 percent in September after having fallen 0.4 percent the previous month. The data is expected at 9:15 a.m. ET (1315 GMT).
* Fed Vice Chairman Stanley Fischer, who has at times supported higher interest rates, is scheduled to speak in New York at 12:15 p.m. ET. Continuación...