Investment banks have been falling over themselves the past week to call for ever-lower oil prices. Banks have been throwing out increasingly low numbers as “worst-case scenario” oil prices, though their base-case forecasts typically call for the market to rise from current prices later this year. Goldman Sachs shocked traders in September with a call for oil to fall as low as $20 a barrel, but that level now seems closer than ever, with WTI dipping below $30 today. Morgan Stanley joined Goldman on Monday in the $20 club. Unlike Goldman, which based its forecast on growing inventories, Morgan Stanley said that oil could fall to $20 under pressure from a strengthening dollar. But those calls were conservative compared to RBS, which suggested last week that oil could hit $16 a barrel, and Standard Chartered , which said yesterday that “prices could fall as low as $10 before most […]