SMH pulled in $1.8 billion in a single day, the most significant influx on ETF.com and Yahoo Finance. The VanEck Semiconductor ETF headed the daily flow list. It has dramatically jumped 58 percent so far this year. The fund does not hold Taiwan Semiconductor Manufacturing Co., but it follows other chip makers in the expanding region. The large money flowed in as tech stocks struggled. The key Nasdaq slipped almost 2 percent on Wednesday while raw oil prices rose. In a volatile market, Higher Treasury yields also exerted pressure on technology plus chip shares.