IPG Photonics is trading 4.57% down at $71.09 after its November 3 earnings report, as cautious Q4 guidance outweighed Q3 revenue and adjusted EPS beats. - Q4 revenue guidance is $265–$295 million, below the $294.2 million consensus midpoint comparison, with a lower adjusted EPS outlook. - Management cited moderation in China battery capacity additions; broader markets and semiconductors are rising, so sector strength does not appear to explain the decline. - Live trading is underway; volume information is unavailable in the supplied price context.