Pony AI is trading 4.39% down at $6.63 on September 29, 2026, with no clear company-specific announcement explaining the decline. - The supplied price history shows a September 28 close of $6.94. - Reuters reported that rising oil prices and steep bond yields were weighing on risk appetite, although tech and AI-linked shares ticked higher; this is broader market context, not a confirmed cause of Pony AI’s move. Current volume and trading-activity details were unavailable, leaving the reason for the sharp intraday decline unclear.