European- and Asian-listed microchip stocks slumped Wednesday after Bloomberg News reported that Apple /zigman2/quotes/202934861/composite AAPL -2.00% won't boost supplies of the latest iPhone after lower-than-expected demand. STMicroelectronics slumped 5% in Paris, ASM International /zigman2/quotes/201180544/delayed NL:ASM -0.97% fell 4% in Amsterdam, Infineon Technologies /zigman2/quotes/204995926/delayed DE:IFX -0.78% dropped 3% in Frankfurt and Taiwan Semiconductor /zigman2/quotes/207385621/delayed TW:2330 -1.50% closed 2% lower in Taipei.











