The stock market’s Santa Claus rally kicked off with solid gains, but the major indexes will still need more holiday magic to finish the year at record highs. The Nasdaq Composite, up 33% this year, is off only 0.7% from its Dec. 16 record close of 20,173.89. Tuesday’s session marked the start of the Santa Claus rally window, which includes the final five days of the year and the first two days of the following year.