The new financing, which could come in the form of preferred or common equity, could reduce the $21 billion cash contribution that Musk has committed to the deal as well as a margin loan he secured against his Tesla shares, the sources said…

Musk has also pledged some of his Tesla shares to banks to arrange a $12.5 billion margin loan to help fund the deal. He may seek to trim the size of the margin loan based on the new investor interest in the deal financing, one of the sources said.

Major investors such as private equity firms, hedge funds and high net-worth individuals are in talks with Musk about providing preferred equity financing for the acquisition, the sources said. Preferred equity would pay a fixed dividend from Twitter, in the same way that a bond or a loan pays regular interest but would appreciate in line with the equity value of the company.