(Bloomberg) -- Jefferies Financial Group Inc.’s revenue jump — due to strong capital markets and rebounding investment banking — bodes well for bigger banks due to report in weeks to come.Most Read from BloombergBankman-Fried Is Sentenced to 25 Years in Prison Over FTX CollapseTesla’s $25,000 Car Means Tossing Out the 100-Year-Old Assembly LineDubai Is Losing Its Allure for Wealthy RussiansLondon Insurers Face Baltimore Bridge Payouts Worth BillionsUBS Banker’s Frustration Exposes Cracks in Worl