U.S. markets faltered as bond yields weighed on investor sentiments. The S&P 500 was little changed till mid-day, while the tech-heavy Nasdaq 100 fell 0.8%. The yield on 10-year Treasuries advanced nine basis points to 3.84%.Meanwhile, crude rose 1.7%, while gold futures increased 1.4%. Bitcoin declined 0.4% to trade around $16,800-level.India benchmark indices Sensex and Nifty continued their rally for a second day, paring losses fr…