31. During the Crash of 1929 preceding the Great Depression, margin requirements were only 10 %. 32. Margin requirements establish the amount of money an investor can borrow from a broker to purchase securities.33. The 50 percent margin requirement on convertible bonds hasn't changed since May 6, 1970. 34. The central bank, however, is also charged with regulating margin requirements for broker-dealers. 35. Some have advocated raising the margin requirement as a way to keep stocks from rising to unsustainable levels. 36. It reflects a truer balance between the margin requirement and the actual level of risk in day trading. 37. But there is evidence that brokerage companies have already begun to tighten some margin requirements on their own. 38. Officials at E-Trade did not return a phone call seeking information about their current margin requirements . 39. The increased volatility and uncertainty can then lead to tightening margin requirements causing further forced sales of assets. 40. Studies have suggested that a rising level of stock prices is unrelated to liberal margin requirements , Greenspan said.
