Top Midday Decliners

02:26 PM EDT, 09/03/2026 (MT Newswires) -- Ultragenyx Pharmaceutical (RARE) said late Wednesday a phase 3 study of apazunersen in Angelman syndrome did not meet its primary endpoint nor a key secondary endpoint. Shares slumped 45% as intraday trading volume catapulted to over 19.8 million from a daily average of about 2.4 million. Tyson Foods (TSN) reduced its fiscal 2026 revenue growth guidance range to 1.5% to 2% from 2.5% to 3.5% previously, the company said Thursday. Shares fell 7.2%, with intraday trading volume of over 4.1 million, versus a daily average of about 3.3 million. Campbell's (CPB) shares dropped 8% after the company guided for a soft fiscal 2027 outlook amid persistent inflation worries and cut its quarterly dividend on Thursday. Trading volume grew to more than 27.2 million from a daily average of almost 8.0 million. Price: 14.72, Change: -11.82, Percent Change: -44.53