Here's why a fast-rising pharmaceutical trimmed—and not abandoned—by a specialist fund signals ongoing conviction in the stock.San Francisco-based 5AM Venture Management reduced its stake in Centessa Pharmaceuticals (CNTA +0.17%) by 150,000 shares in the third quarter, according to a November 14 SEC filing.What HappenedAccording to a filing published with the Securities and Exchange Commission on November 14, 5AM Venture Management disclosed a reduction in its Centessa Pharmaceuticals position. The fund rep ...