Tesla; Andrew Kelly/Reuters
- Elon Musk reiterated his belief that Tesla will be "the most valuable company on earth."
- The comments came during the electric vehicle maker's fourth-quarter earnings call.
- Tesla stock is down 59% from its 52-week high, but has rallied nearly 30% year-to-date.
Elon Musk stood behind his view that Tesla will one day be the most valuable company on earth, as he teased new initiatives during the company's fourth-quarter earnings call on Wednesday