Even in a year with a huge tech stock rally, Columbia Global Technology Growth Fund (CTYRX) stands out for its outsized gains. The final bucket in the portfolio is value opportunity names, or stocks that Narang and his team believe have valuations cheaper than the entire portfolio. He cited data from Alliance Bernstein showing that tech stocks in the most expensive and least expensive quintiles tend to outperform historically — suggesting the attraction of a balanced approach. "Returns seesaw between growth and value over various periods of time," he added, noting this year's growth-oriented tech rally after last year's drubbing. Global mandate Over the last 11 years managing the fund, Narang called its "global mandate" both the biggest challenge and opportunity for him.

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Persons: Rahul Narang, Narang, we're, It's, Bernstein, Morningstar Organizations: Columbia Global Technology Growth, Nasdaq, Morningstar . Columbia Management, California Polytechnic State, JPMorgan, Microsoft, Nvidia, Broadcom, Columbia, chipmakers, NXP Semiconductors, Taiwan Semiconductor Manufacturing Co, Samsung Locations: Morningstar, India