Why is Havas stock surging today?

Market reports indicate that both Havas and Valmet are experiencing significant stock surges today. Investors are reacting to specific developments driving the upward momentum for these two distinct companies. While the sources focus on the price increases, the primary objective is to identify the underlying reasons behind the current bullish trends for Havas and Valmet. Both entities are seeing increased valuation as trading activity intensifies across the financial markets during this specific session.