Going private is one way to avoid the intense scrutiny of public markets.
"Funding secured", the tweet added, offering no further details on where the funds would come from or when.
"My hope is all current investors remain with Tesla even if we're private", Musk tweeted. "Already do this with Fidelity's SpaceX investment". They were initially driven higher after the Financial Times reported Saudi Arabia has quietly built a big stake in Tesla. I think he's serious.
Short interest in Tesla on Monday stood at almost US$12 billion, equivalent to 28 per cent of its float, according to S3 Partners, a financial analytics firm.
Weeping Murray wins marathon, rips ATP event for 3am finish
After Murray's announcement, O'Brien said she expected Murray would return next year. "Not playing, potentially, is possible. His gait was uneven at times during the match, sparking concerns over possible reinjury of his surgically repaired hip.
Baby boy dies after being pulled from NY river
CBS New York says authorities took the child from the water and rushed him to a local hospital and was pronounced dead. Police say it wasn't immediately clear why the child was in the water, and no parent or guardian was present.