CoStar Group is trading at $28.79, up 4.29%; no confirmed catalyst for the move was reported.
- CoStar Group reported that every major Canadian commercial real estate brokerage subscribed to its platform as of September 2026.
- The report did not connect the platform-adoption news to the share-price gain.
- Major U.S. indices were modestly lower, with no strong same-direction market move to explain the gain.