Marriott Vacations Worldwide is trading at $121.41, up 9.45% in pre-market, with no clear overnight company-specific catalyst identified. - Third-quarter results are scheduled for November 4. - JPMorgan’s Overweight rating and $125 price target were reported earlier, on October 8, and do not establish a new overnight catalyst. - Major indices are modestly higher, but that does not clearly explain the outsized move.