This tech fund manager has stellar returns — and says the sector’s valuations are fine By: MarketWatch June 21, 2017 at 05:18 AM EDT Rahul Narang of Columbia Threadneedle Investments shares his investing philosophy. Read More >> Related Stocks: Alibaba Group Holding Ltd Alphabet-A Alphabet-C Amazon.com Apple Facebook Global Tech Ishares ETF HP Inc Lam Research Micron Technology Microsoft NVIDIA Corp Salesforce Standard & Poors 500 Visa