To counter the weakness, Tesla announced a price cut in China in late October and raised insurance incentives in November. Tesla's Historic Returns In December: Tesla offered its shares to the public in late-June 2010. So, we have 12 years of back data to gauge how the stock typically fares in the final month of the year. The debut year more often reflects moderating sentiment following a post-initial public offering exuberance. Excluding 2010, the average historical return of Tesla stock in December is roughly 4.5%.