US STOCKS-Wall St to open higher after ECB announcement, data
* ECB cuts rates, to buy asset-backed securities
* ADP payrolls short of estimates, initial claims up a tad
* Tibco Software gains before open; to review alternatives
* Ciena stumbles after results, outlook
* Futures up: Dow 37 pts, S&P 6.25 pts, Nasdaq 12.25 pts (Adds ECB decision, data)
By Chuck Mikolajczak
NEW YORK, Sept 4 (Reuters) - U.S. stocks were set to open higher on Thursday, after the European Central Bank cut interest rates to record lows and a flurry of economic data indicated the U.S. economy was steadily improving.
* The ECB cut interest rates to new lows, with its main refinancing rate lowered to 0.05 percent from 0.15 percent, as it attempted to fend off deflation and support a stagnating euro zone economy. ECB President Mario Draghi also said the central bank would begin to purchase asset-backed securities.
* ADP employment data fell a touch short of expectations, as companies hired 204,000 workers in August, against the 220,000 estimate and below 218,000 hired in July. Initial jobless claims rose to 302,000 last week, slightly above the 300,000 forecast but within levels consistent with a strengthening labor market. Continuación...