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Zacks Research Downgrades PTC Therapeutics (NASDAQ:PTCT) to Hold - MarketBeatMarketBeat · Sat, 08 Aug 2026 11:45:55 GMTBarclays Keeps Their Buy Rating on PTC Therapeutics (PTCT) - The Globe and MailThe Globe and Mail · Tue, 04 Aug 2026 08:50:00 GMTPTC Therapeutics, Inc. (NASDAQ:PTCT) Short Interest Update - MarketBeatMarketBeat · Wed, 29 Jul 2026 07:00:00 GMT