Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Nov. 30, 2011

Selected Quarterly Financial Data (Unaudited) [Abstract]

Selected Quarterly Financial Data (Unaudited)

Note 24. Selected Quarterly Financial Data (Unaudited)

The following is a summary of unaudited quarterly statements of earnings for the twelve months ended November 30, 2011 and the eleven months ended November 30, 2010 (in thousands, except per share amounts):

	Three Months Ended
	February 28, 2011		May 31, 2011		August 31, 2011		November 30, 2011
Total revenues	$	966,676	$	970,117	$	794,104	$	798,740
Net revenues		758,382		727,165		509,282		533,983
Earnings before income taxes		162,931		130,484		55,238		70,680
Earnings to common shareholders		87,341		80,616		68,275		48,386
Earnings per common share:
Basic	$	0.42	$	0.36	$	0.30	$	0.21
Diluted	$	0.42	$	0.36	$	0.30	$	0.21
	Three Months Ended
	March 31, 2010(1)(2)		May 31, 2010(1)(2)		August 31, 2010(2)		November 30, 2010
Total revenues	$	725,368	$	832,040	$	693,030	$	851,913
Net revenues		580,055		667,536		517,269		679,812
Earnings before income taxes		122,456		143,680		76,498		123,578
Earnings to common shareholders		72,144		83,826		44,754		62,717
Earnings per common share:
Basic	$	0.35	$	0.41	$	0.22	$	0.31
Diluted	$	0.35	$	0.41	$	0.22	$	0.31

(1) The three months ended March 31, 2010 and May 31, 2010 both include the Total revenues and earnings for the month ended March 31, 2010.

(2) As reported in Transition Report on Form 10-K for the eleven months ended November 30, 2010, adjustments were made to amounts presented for the quarters of 2010 and 2009 relating to differences between our records and the final statement of our clearing bank involving a portion of our fixed income business that we are now self-clearing. The fourth quarter of 2010 includes $13.8 million relating to a difference between our records and the final statement of our clearing bank the cause and period of origin remained unidentified; the amount was written off as a reduction in Principal revenue in the fourth quarter of 2010. The adjustments to Net earnings, on an after tax basis, to that previously reported for the quarters in 2010 are set forth below:

	Three Months Ended
Increase (decrease) in Net earnings to common shareholders	March 31, 2010			May 31, 2010			August 31, 2010
	(in thousands)
Previously reported Net earnings to common shareholders	$	74,066		$	84,832		$	46,256
Differences with clearing bank		(1,288	)		(766	)		(1,738	)
Other items(1)		(634	)		(240	)		236
Total adjustments		(1,922	)		(1,006	)		(1,502	)
Adjusted Net earnings to common shareholders	$	72,144		$	83,826		$	44,754

(1) Other items — Includes the effect of certain other immaterial adjustments.