Updated from 12:57 p.m. EDTWith help from an analyst upgrade, Infineon Technologies ( IFX) was among the few semiconductors in the green Monday. An analyst with UBS upgraded Infineon on Monday to Buy from Neutral because it believes it could get government-backed debt financing given that it supplies the auto industry, according to MarketWatch. The analyst also believes Infineon will continue to be an iPhone supplier. Infineon shares were recently up 14.1% to $1.46. The stock has a 52-week high of $11.08. Advanced Micro Devices ( AMD) also was on the plus side Monday, recently gaining 2.9% to $3.53. The rest of the sector was having a tougher go of it: Texas Instruments ( TXN) was down 2.6% to $16.52. Intel ( INTC) was down 1.4% to $15.72. STMicroelectronics ( STM) was down 3.7% to $5.51. National Semiconductor ( NSM) was down 3% to $11.86. Broadcom ( BRCM) was down 2.3% to $21.56. Qualcomm ( QCOM) was down 1.8% to $40.48. Nvidia ( NVDA) was up 0.3% to $11.35.