Volume spike BMY.SW (Bristol-Myers, SIX) CHF42.54 13 Feb 2026: watch flow

An intraday volume spike hit BMY.SW stock on 13 Feb 2026, moving the price to CHF 42.54 on the SIX market. Trade volume rose to 500 versus an average of 22, producing a relative volume of 22.73. The sharp intraday flow pushed the share down -4.40% as sellers overwhelmed a thin book. This note breaks the catalyst signals, valuation context, and what the Meyka AI forecast and grade say for intraday and near-term traders.