Wedbush Securities analyst Daniel Ives said that worries about upcoming stock sales by Musk and the possibility that he is becoming distracted by Twitter weighed on Tesla shares. “This (is) causing a bear festival on the name,” he said…

“If Tesla’s share price continues to remain in freefall that will jeopardize his financing,” said OANDA senior market analyst Ed Moya.

As part of the Tesla deal, Musk also took out a $12.5 billion margin loan tied to his Tesla stock. He had already borrowed against about half of his Tesla shares.

University of Maryland professor David Kirsch, whose research focuses on innovation and entrepreneurship, said investors started to worry about a “cascade of margin calls” on Musk’s loans.