I'll just drop this from the SEC. Keep in mind United are a listed company, so all this "insider" gossip should be taken with a large pinch of salt, otherwise it is potentially in breach of insider trading regs.
Material inside information can be either positive or negative.
Information is “nonpublic” if it has not been disclosed to the public generally. For information to be considered public, there should be some evidence that it has been widely disseminated and that the investing public has had time to absorb the information. You should generally consider information nonpublic until after the second business day after the information is publicly released, such as by press release or widely circulated public disclosure documents filed with the SEC, such as prospectuses or 10-K, 10-Q or 8-K reports. For example, if information is disclosed via press release on a Monday, it can be considered public beginning that Thursday.