Whether it was the start of a market correction or just a blip in what otherwise has been an almost nine-year bull run, equities suffered their largest losses in quite some time last week. Each of the benchmark indexes listed here fell more than 3.0%, led by the Dow, which endured its largest weekly drop-off since last January. The S&P 500, which fell 3.85%, marked its largest decrease in two years. Lower-than-expected earnings reports from some major energy companies drove stocks down. But a possible fear that interest rates — along with inflation — would be rising may have pushed investors to sell not only equities, but long-term bonds as well.