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Repligen Corporation (RGEN) Slid on Softened Enthusiasm for Life Sciences Tools

Osterweis Capital Management, an investment management firm, released its Q1 2026 investor update for its “Osterweis Opportunity Fund”. A copy of the letter can be downloaded here. The fund returned -3.78% in the quarter compared to -2.81% for the Russell 2000 Growth Index. The fund's long-term returns stay positive, but recent geopolitical shocks and AI disruption concerns pressured quarterly results. Security selection boosted performance, whereas sector allocation was a significant drag. Although the firm’s investment approach remains consistent, it continues to seek innovative...