By Davide Barbuscia NEW YORK (Reuters) – Wild swings in asset prices following Russia’s invasion of Ukraine are prompting some investors to pare risk in their portfolios, fearing that the type of volatility seen in commodities in recent weeks could hit other markets. At issue is liquidity – or the ease at which investors can buy or sell an asset without affecting its price. While episodes of low liquidity have contributed to sharp gyrations across markets over the last decade, signs of stress have become more plentiful in the last few weeks, exacerbated by everything from sanctions against Rus…