On this episode of Stock Movers:

- Shares of CME Group (CME) dipped in the premarket session after trading of futures and options on the Chicago Mercantile Exchange was halted by a data-center fault, causing hours of disruption to markets across equities, foreign exchange, bonds and commodities. The malfunction was caused by cooling system problems at a data center in the Chicago area, according to facility operator CyrusOne. Engineering teams have restarted several chillers and deployed temporary cooling equipment, a spokesperson said, without giving a time for the resumption of normal operations.

- Shares of Tilray Brands (TLRY) fell ahead of the US market open after the cannabis company announced that it will implement a one-for-ten reverse stock split of its common stock. The reverse stock split is expected to be effective after the markets close on December 1st, and shares of TLRY’s common stock will begin trading on a split-adjusted basis under the same symbol when the markets open on December 2nd, according to a press release.

- Shares of Oracle (ORCL) declined in early trading after Morgan Stanley warned a gauge of risk on Oracle Corp.’s debt reached a three-year high in November, and things are only going to get worse in 2026 unless the database giant is able to assuage investor anxiety about a massive artificial intelligence spending spree. A funding gap, swelling balance sheet and obsolescence risk are just some of the hazards Oracle is facing, according to Lindsay Tyler and David Hamburger, credit analysts at the brokerage. The cost of insuring Oracle Corp.’s debt against default over the next five years rose to 1.25 percentage point a year on Tuesday, according to ICE Data Services.

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