The billionaire agreed to acquire the social-media platform for about $44 billion.

Elon Musk's making an appearance at a Twitter all-hands meeting.

The deal comprises Musk's gargantuan $21 billion equity commitmen.

The $12.5 billion margin loan that he secured against his stock in Tesla.

Elon Musk's lack of a business plan and erratic behavior also has investors spooked.

This is one of the reasons why well-known leveraged-finance banks like Credit Suisse.

Citi passed on underwriting the term loans, the bankers familiar with the transaction said.