By Gregor Stuart Hunter and Ankur Banerjee

SINGAPORE, June 8 (Reuters) – Sam Konrad’s stocks are having a fantastic year, thanks to AI-fueled rallies in Taiwan and South Korea, but his fund is so top heavy with winners, he now needs to ditch his best performers.

“We have been forced sellers of TSMC, Samsung and MediaTek,” said Konrad, investment ‌manager for Asia Equity Income at Jupiter Asset Management, of the chip-making stocks, which have respectively gained 52%, 159% and 184% so far this year.

Just three large Asian tech firms – ‌TSMC, Samsung and Korean chipmaker SK Hynix – now account for almost a third of MSCI’s Asia Pacific ex-Japan Index, creating concentration risks that many active portfolio rules deem…