Tesla stock ticked up Friday, the last trading day of 2022, but is on track to close out its worst year in the company's history.The Tesla stock sell-off has far outpaced the losses of major indices including the S&P 500 and the tech-heavy Nasdaq, which are down 19% and 33%, respectively, for the year.But he majority of the downturn in the stock has come since Musk completed his takeover of Twitter, where he is also serving as CEO, in October.A big shift also occurred that month at Tesla, which walked back expectations that the company would increase production by 50%.Investors and analysts have since displayed growing concern that Twitter is taking away Musk's focus on Tesla with his politicized tweets hurting the EV maker's brand as well."