A mixed bag of leading stocks hit new intraday highs Friday despite a pullback by the broader market. MarketAxess Holdings (MKTX) added 2.64, or 3%, to 91.85, breaking out past a 90.27 flat-base buy point in above-average volume. The stock has rallied 28% so far this year, well ahead of the Nasdaq’s 8% gain. The electronic bond-trading platform operator stepped up profit and sales growth the past three quarters.