CNBC Pro asked several finance experts for their top ETF picks to buy and hold this year. The MSCI USA Value index, accessible to U.S. and Europe-based investors, has run up 14% this year, outperforming the S & P 500. Invesco Nasdaq Biotech ETF For investors wanting exposure to growth stocks, Rees likes the Invesco Nasdaq Biotech ET F (SBIO-GB) in the biotech space. L & G Clean Water ETF Rees, whose firm manages more than $12.6 billion in assets, also highlighted the L & G Clean Water ETF (GLUG-GB) for investors keen on an environmental play. The fund's $415 million is invested across 53 stocks in the Solactive Clean Water Index.

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Persons: Vahan Janjigian, Janjigian, Ursula Marchioni, Marchioni, Ian Rees, Rees, It's Organizations: CNBC Pro, Vanguard, Stock, Greenwich Wealth, BlackRock, Premier Miton Investors, Nasdaq Biotech, Nasdaq, Nasdaq Biotech ETF, U.S, London Stock Exchange, Index, Vanguard FTSE Locations: U.S, Europe, East, Asia, Germany