US STOCKS-Wall Street flat after data
* ISM services report strong, but ADP report weak
* Many investors worry about low volume and volatility
* Protective Life jumps, Dai-ichi to buy
* NQ Mobile has biggest gain ever, up 28 pct
* Dow down 0.2 pct, S&P down 0.1 pct, Nasdaq up 0.1 pct (Updates to open, adds ISM data)
By Ryan Vlastelica
NEW YORK, June 4 (Reuters) - U.S. stocks were largely flat on Wednesday as mixed reads on the economy gave the market little direction and traders were reluctant to buy with indexes near record levels.
Wall Street initially opened lower, pressured by a disappointing read on the labor market, but it subsequently cut its losses on a bullish read on the services sector. Trading volume continued to be light, making the market more susceptible to intraday swings and suggesting that recent gains lacked conviction.
The Institute for Supply Management's non-manufacturing index accelerated more than expected in May, rising at the fastest pace in nine months. Separately, fewer private sector jobs were added in May than had been anticipated, according to the ADP National Employment Report. Continuación...