There are some ridiculous posts on this board but this one is beyond absurdly ridiculous!! A CEO of a public company cannot short the stock of his company. He can use an options strategy to protect on the downside but the CEO cannot short stock in a public company of which he is an officer.
Are you aware of:
"Beginning in June 2011, Goldman Sachs Bank USA, an affiliate of Goldman, Sachs & Co., has made extensions of credit in the aggregate amount of $275 million to Elon Musk and the Elon Musk Revocable Trust dated July 22, 2003, or the Trust, a portion of which Mr. Musk used to purchase shares of common stock in our public offering in May 2013 and private placements in June 2011 and June 2013. Interest on the loan accrues at market rates. Goldman Sachs Bank USA received customary fees and expense reimbursements in connection with these loans. As a regulated entity, Goldman Sachs Bank USA makes decisions regarding making and managing its loans independent of Goldman, Sachs & Co. Mr. Musk and Goldman have a long-standing relationship of almost a decade. In addition, , Morgan Stanley Smith Barney LLC has made a loan to Mr. Musk in the aggregate amount of $25 million. We are not a party to these loans, which are full recourse against Mr. Musk and the Trust and are secured by pledges of a portion of the Tesla common stock currently owned by Mr. Musk and the Trust and other shares of capital stock of unrelated entities owned by Mr. Musk and the Trust. The terms of these loans were negotiated directly between Mr. Musk and Goldman Sachs Bank USA and Morgan Stanley Smith Barney LLC."?
What GS and MS does to hedge those loans is not reportable
You seem to be under a misimpression. Musk owns a third of TSLA shares. He bought his latest million shares in May. He can't possibly go short unless he sells all of his shares first. That would have to be reported to the SEC.
He certainly did not say yesterday that it makes sense to short TSLA. Instead he said, "In the past I said it’s really crazy to short Tesla. Is it so crazy to short Tesla right now? I mean it's not as crazy but I still think it’s probably not a good idea."