Shares of Tesla Inc. TSLA, -0.87% dropped more than 6% Thursday, poised to close at their worst in nearly two weeks, as the broader equity market took a turn for the worse as well. The stock traded as low as $885.47, snapping a three-day winning streak. Earlier Thursday, the EV maker’s Chief Executive Elon Musk disclosed in a filing that he had lined up additional funding support for his $44 billion acquisition of Twitter Inc. TWTR, -1.11%, gathering backing from Larry Ellison, Sequoia Capital, and others. The S&P 500 index SPX, -0.57% fell nearly 4% on Thursday at last check.