South Korea’s equity benchmark Kospi plunged as much as 6.2% on Wednesday, with memory makers Samsung Electronics Co. and SK Hynix Inc. among the biggest drags. In Japan, equipment firm Advantest Corp. dropped 10%, weighing on the Nikkei 225. Asia’s largest stock Taiwan Semiconductor Manufacturing Co. fell 3.3%. All are suppliers to Selling pressure trimmed roughly $500 billion in combined market capitalization from the Philadelphia Semiconductor Index on Tuesday and a Bloomberg gauge tracking Asia chip st ...