Sam Isaly, manager of Finsbury Worldwide Pharmaceutical, is cautious about biotechnology stocks' short-term prospects, despite their profit potential. He emphasizes maintaining exposure due to compelling investment opportunities, with accelerating drug discovery. The trust invests 20-40% in smaller-cap biotech and 60-80% in larger-cap pharma, more optimistic about the latter. Top holdings include Pfizer, Sanofi-Synthelabo, Novartis, Altana, and Orchid BioSciences. The trust's NAV rose 47.2% in six months, outperforming its benchmark.