Stock Market Today, June 25: Bio-Techne Surges After Merck KGaA Announces $73-Per-Share Cash Acquisition Offer

Merck KGaA is acquiring Bio-Techne for $73 per share in cash, sending shares up 20% on June 25. The deal follows a catalyst one week earlier: activist investor Ananym Capital Management disclosed a stake and publicly pushed for a sale of the life sciences tools company.

Trading volume hit 51.3 million shares, well above typical levels, as the market absorbed the acquisition news. Merck KGaA, the German pharmaceutical and life sciences group, projects more than $150 million in annual cost synergies within three years of closing.

The timeline underscores the speed of activist campaigns in today's market. Ananym's stake-building and sale pressure materialized into a definitive agreement in roughly one week, delivering an immediate premium to shareholders who followed the activist's thesis.