** SpaceX's SPCX.O shares fall as much as 3.8% to $110.85, lowest since rockets-to-AI firm's mid-June IPO, amid overall weakness in equities on Thurs. Stock last down fractionally at $115.05

** Google parent Alphabet GOOGL.O disclosed in an SEC filing it holds SPCX shares worth $94.1 bln; that equates to about 6% stake, based on SPCX's current market cap of roughly $1.52 trln

** GOOGL's marketable equity securities include $80 bln in SPCX shares subject to short-term restrictions on the ability to sell and $14.1 bln of shares subject to long-term restrictions through Q3 2027, according to the filing

** In Jan 2015, co, which was then Google, partnered with Fidelity by investing $900 mln in Elon Musk's private space venture

** SPCX slated to report Q2 results on Aug 4, which would allow employees and some early investors to offload shares when lockup periods begin to expire

** SPCX's stock has tumbled this month since its blockbuster IPO priced at $135 with short sellers sitting on an estimated $15.5 bln in paper profit

** Meanwhile, GOOGL shares falling 6% on the session after its cash burn jolts investors as AI spending climbs, and stock of Musk's other firm, EV maker Tesla TSLA.O, skidding 13% after reporting negative free cash flow for first time in more than two years