Since the takeover discussions were announced on Thursday, Xstrata's share price has risen almost 9 percent.
The collapse of the discussions was announced in a terse statement released by both Andersen and KPMG, which said that the private deals being negotiated by offices in individual countries had undermined the effort at a wide-scale combination.
Before those discussions were announced, shares in the LSE climbed sharply to close up 3.1%.
"Can Corbyn's Labour become a mass movement for radical change?" was the theme of the discussion, as announced on the invitation.
Still, in recent weeks, Pakistani officials have begun publicly backpedaling on their demands and signaling that some deal on the supply lines could be reached, though no timetable on such a discussion was announced.
It announced discussions on the deal, reportedly worth about £800m, on Tuesday.
Continental decided to drop the discussions after UAL announced worse-than-expected earnings, which sent shares falling last week.
After several weeks of internal discussions, executives there announced that the company would stick to the old categories: Impressionist and modern art, and contemporary art, which it continued to define as work dating from 1945 to the present.
But in a move that surprised those close to the discussions, the inquiry announced late on Wednesday that Emmerson, a respected human rights lawyer, was to be suspended and put under investigation.
Separately, Mr. Case said that in the week since the merger was announced, discussions had picked up between America Online and owners of cable systems about allowing AOL to use their networks to offer high-speed access to its service.
