Elon Musk, the wealthiest man ever, may soon see his fortunes diverge as Tesla faces a rollercoaster ride while SpaceX's valuation continues to move in a step function.

The transaction was part of Musk’s year-end tax planning. The recipients “have no current intention to sell” the shares, the Securities and Exchange Commission filing said.

The shares dropped more than 6% to start a new year of trading after the company reported weaker-than-expected fourth-quarter deliveries.

After a monstrous stock rally following November’s presidential election, Tesla (TSLA) reported its first annual decline in electric vehicle delivery, highlighting the growing disconnect between its high-flying stock price and its core automobile business.

The delivery figures are the first real piece of fundamental news for Tesla investors since the November election sparked a big rally for the stock.

Tesla has posted its first annual sales drop in more than a dozen years, sending its stock tumbling, as CEO Elon Musk has kept busy in the last half-year inserting himself into Donald Trump's campaign