Stellar prices for gold have also stolen investor attention, with the precious metal scaling a new record of over $2,100. The record-breaking numbers for markets, however, haven't stopped some investors from worrying about three key issues. Inflation resurgenceAfter months of cooling, U.S inflation is proving itself to be more stubborn than experts had predicted. That's despite the Federal Reserve embarking on an aggressive monetary policy campaign over the past year, in a bid to tame consumer price pressures from their 40-year highs. Ariel Investments' Vice Chair Charlie Bobrinskoy told CNBC markets are not focused on China's residential real estate problems.

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Persons: Michael M, haven't, Nobel, Paul Krugman, Mark Zandi's, Mark Zandi, Krugman, Nouriel Roubini, Doom, Trump, Marko Kolanovic, Mohamed El, Erian, Ariel, Charlie Bobrinskoy Organizations: New York Stock Exchange, Santiago, Federal, stoke, Allianz, Bloomberg, CNBC, El, Ariel Investments Locations: New York City, U.S, China