PTC Therapeutics (PTCT) Stock on November 28, 2025: S&P SmallCap 600 Debut, Insider Selling and a 90% YTD Rally

PTC Therapeutics, Inc. is ending November 28, 2025 as one of the most talked‑about biotech small caps on Wall Street. The rare-disease specialist has just been added to several key S&P indices, is trading near all‑time highs after an almost 90% year‑to‑date run, and has seen heavy insider selling in the last few days. MarketBeat+3News Release Archive+3MarketScreener+3