|   Billionaire investor Howard Marks and hedge fund titan Paul Marshall warned that commercial real estate could face a crisis soon. Marks cautioned that a wave of mortgage defaults could add stress to the U.S. banking sector. 
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|   Billionaire investor Howard Marks and hedge fund titan Paul Marshall warned that commercial real estate could face a crisis soon. Marks cautioned that a wave of mortgage defaults could add stress to the U.S. banking sector. 
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