BLK.SW stock surges 96.87% intraday on SIX 25 Feb 2026: what traders should watch next

BLK.SW stock is the top intraday mover on the SIX on 25 Feb 2026 after a CHF 419.65 climb to CHF 852.85, a +96.87% swing from yesterday. The move shows immediate market attention in the Financial Services sector and raises questions about follow-through volume. Traders should note the session high of CHF 863.90 and early volume of 40 shares while monitoring news flow and order book depth. This report breaks down valuation, fundamentals, Meyka AI grade and a short-term outlook for active traders.