UPDATE 1-Jefferies Q2 results well above view, shares jump

* Profit may double analyst forecasts

* Revenue to exceed view by nearly half

* Shares rise 8.8 percent after-hours

NEW YORK, June 24 (Reuters) - Jefferies Group Inc (JEF.N), an investment bank focused on mid-sized companies, on Wednesday projected second-quarter net profit and revenue well in excess of analyst forecasts, and its shares rose 8.8 percent in after-hours trading.

The New York-based company said it expects net earnings of more than $50 million, equal to about 29 cents per share, on record net revenue exceeding $500 million.

Analysts on average expected profit of 14 cents per share on revenue of $341.2 million, according to Reuters Estimates.

Jefferies said results benefited from fixed income and commodities, helped by record results in sales and trading of corporate bonds, mortgage- and asset-backed debt, interest-rate swaps, municipal bonds and emerging markets debt.

It also said it expects at least $90 million of investment banking revenue, more than twice the first quarter amount.

Jefferies expects to release results on July 21.

The company's shares rose $1.80 to $22.25 after the forecast was released following the market close. They rose 79 cents to $20.45 in regular trading. (Reporting by Jonathan Stempel; editing by Carol Bishopric)