US STOCKS-Futures point to lower open as data disappoints
* ADP report shows fewer jobs added in May than expected
* Many investors worry about low volume and volatility
* Protective Life jumps in premarket, Dai-ichi to buy
* Futures down: Dow 19 pts, S&P 3.6 pt, Nasdaq 9 pts (Adds ADP data)
By Ryan Vlastelica
NEW YORK, June 4 (Reuters) - U.S. stock index futures pointed to a lower open on Wednesday as data on the labor market came in weaker than expected, giving investors reason to sell amid few positive catalysts and with indexes near record levels.
* About 179,000 private sector jobs were added in May, well below the 210,000 that had been expected, according to the ADP National Employment Report. April's job gains were revised loser by 5,000.
* The report comes after a string of economic indicators pointed to improving conditions, and it could raise caution for Friday's closely watched non-farm payrolls report.
* Equities have been strong lately, with the S&P 500 up for seven of the past nine sessions, hitting multiple records over that period. However, the gains have come in anemic trading volume, suggesting the rally lacks conviction. Continuación...