Aurora Mobile is trading at $8.80, up 7.71%, with no confirmed stock-specific catalyst. - Its latest disclosed company news was an October 16 JPush integration with Prinx Chengshan; available reports do not confirm it drove the October 19 move. - The Nasdaq Composite was up 1.01%, providing a broader positive-market backdrop, but no specific cause for Aurora Mobile’s gain is confirmed. - No reliable live volume figure was available.