SOUTH Korean chipmakers rallied as risk appetite returned after last month’s rout and traders weighed a local media report that Singapore’s Temasek Holdings plans to invest in Samsung Electronics and SK Hynix. Shares of the chip duo briefly extended gains to more than 8 per cent after Asia Business Daily reported that the state fund plans to invest directly in the two chipmakers through its internal investment team, and is mulling timing. Temasek said in response to queries from Bloomberg News that it did not seek advice from the Korean government on the timing of investments in either SK Hynix or Samsung, and that it first invested in both companies more than two years ago.