Tesla shares were added to other portfolios during the second quarter including hedge fund Alyeska Investment Group, which took a new 100,000 share position. Gilder Gagnon Howe & Co of New York boosted its stake in Tesla by 24 percent to 808,661 shares.
Solar panel installer SolarCity this month accepted a $2.6 billion offer from Tesla, a deal first announced on June 21 and a step in the plan of Elon Musk to create a carbon-free energy and transportation company. Musk is chief executive of Tesla, chairman of both companies and their biggest shareholder.
Shares of SolarCity have declined by more than 50 percent this year, making some skeptical of the deal that caused Tesla's stock to drop 10 percent on the first trading day after the merger was announced.
But Tesla shares have since recovered and were trading around $226 Monday afternoon, as big investors appear to have stood by the company. SolarCity shares are also higher before the deal was announced.
Gilder Gagnon Howe & Co listed owning 43,840 shares of SolarCity at the end of June, down from 832,139 shares at the end of the first quarter.
Fidelity, SolarCity's second-largest investor, held 11.65 million shares as of June 30, according to Reuters data, 20 percent less than at the end of March.
Senvest Management was a hedge fund that added SolarCity in the second quarter, taking a new stake of 125,000 shares in the period, filings showed.