Equities continued their strong showing to start the year. Each of the benchmark indexes listed here posted solid gains, led by the Russell 2000. The S&P 500 advanced more than 1.0% for the second week in a row — the first time that’s happened since last July. Investors may be expecting a continuation of strong corporate profits as the fourth-quarter earnings reporting season began Friday. News that China may curtail or even halt its purchase of U.S. Treasuries pushed yields on the 10-year note to their highest level in several months. The price of oil continues to rise, boosting energy stocks. Strong retail sales in December may have encouraged investors to believe that the economy will continue to expand, while sending retail stocks higher.