Morning Market Losers

New Source Energy Partners LP NSLP shares fell 28.85 percent to $1.85. New Source Energy Partners' board suspended quarterly cash distribution on common units. Yelp Inc YELP shares dipped 26.77 percent to $24.54 after the company posted a loss in the second quarter and lowered its full-year revenue outlook. Tableau Software Inc DATA shares declined 22.61 percent to $98.46. Tableau reported Q2 earnings of $0.07 per share on revenue of $149.9 million. Big 5 Sporting Goods Corporation BGFV dropped 19.34 percent to $12.01. Big 5 Sporting Goods reported downbeat Q2 sales and issued a weak Q3 earnings forecast. VASCO Data Security International, Inc. VDSI declined 17.48 percent to $21.91. VASCO Data Secutiy reported Q2 earnings of $0.35 per share on revenue of $65.4 million. Twitter Inc TWTR shares fell 11.80 percent to $32.23. Twitter reported stronger-than-expected results for its second quarter. Average Monthly Active Users increased 15 percent year-over-year to 316 million in the second quarter. Silicon Laboratories SLAB declined 10.92 percent to $45.45. Silicon Laboratories reported weak Q2 revenue and issued a downbeat Q3 outlook. Akamai Technologies, Inc. AKAM shares slipped 6.12 percent to $69.14 after the company reported weaker-than-expected Q2 earnings and issued a downbeat Q3 guidance. Mastercard Inc MA shares declined 1.09 percent to $94.12. Mastercard reported in-line earnings for the second quarter.