Last Wednesday, Veraison, a Swiss investment firm named after the technical term used by winegrowers to describe the ripening of grapes, disclosed that it had bought 3.2 per cent of Aryzta’s shares. By the next stock exchange filing on Saturday, its stake had more than doubled to 6.8 per cent. On the same day, Veraison announced that while this figure was correct as of the time it crossed the 5 per cent regulatory threshold on May 4, it had since then ramped up to 7.3 per cent. Records show that the firm’s investment vehicle, Veraison Sicav – Engagement Fund, began…