Exhibit 99.1

ALLEGHANY CORPORATION REPORTS 2010 THIRD QUARTER RESULTS — STOCKHOLDERS’ EQUITY PER COMMON SHARE INCREASES 6.1 PERCENT SINCE 2009 YEAR END

     NEW YORK, NY, November 4, 2010 — Stockholders’ equity per common share of Alleghany Corporation (NYSE-Y) at September 30, 2010 was $318.99, an increase of 6.1% from stockholders’ equity per common share of $300.69 at December 31, 2009 (all as adjusted for the stock dividend declared in February 2010), Weston M. Hicks, President and chief executive officer of Alleghany, announced today. Consolidated cash and invested assets was approximately $4.85 billion at September 30, 2010, compared with $4.45 billion at December 31, 2009.

     Alleghany’s 2010 third quarter net earnings were $36.6 million, or $4.15 per common share (presented on a basic basis throughout), compared with net earnings of $49.5 million, or $5.39 per common share, in the third quarter of 2009. For the first nine months of 2010, net earnings were $161.1 million, or $18.02 per common share, compared with net earnings of $140.1 million, or $15.18 per common share, in the first nine months of 2009. Net earnings amounts include the following components:

		Three months ended September 30,																Nine months ended September 30,
(in millions, except		Amount								Per Share								Amount								Per Share
per share amounts)		2010				2009				2010				2009				2010				2009				2010				2009
Net catastrophe (losses) after tax		$	(3.4	)		$	(0.8	)		$	(0.38	)		$	(0.08	)		$	(16.3	)		$	(7.2	)		$	(1.82	)		$	(0.81	)
Net realized capital gains after tax		$	17.7			$	41.6			$	2.01			$	4.53			$	56.6			$	132.6			$	6.33			$	15.03
Other than temporary impairment (losses) after tax		$	(1.6	)		$	(6.2	)		$	(0.18	)		$	(0.68	)		$	(6.0	)		$	(55.5	)		$	(0.67	)		$	(6.29	)

     A summary of Alleghany’s results for the three and nine months ended September 30, 2010 and 2009 is as follows:

		Three months ended												Nine months ended
		September 30,												September 30,
(in millions)		2010				2009				Change				2010				2009				Change
AIHL insurance group (1):
Underwriting profit (loss) (2)
RSUI		$	26.6			$	33.3				(6.7	)		$	107.2			$	116.3				(9.1	)
CATA			(0.2	)			2.3				(2.5	)			2.8				8.2				(5.4	)
PCC			(6.4	)			(4.7	)			(1.7	)			(17.3	)			(65.5	)			48.2
AIHL Re			—				—				—				—				—				—
			20.0				30.9				(10.9	)			92.7				59.0				33.7
Net investment income			30.5				30.0				0.5				96.9				84.7				12.2
Net realized capital gains			27.2				62.9				(35.7	)			82.6				89.3				(6.7	)
Other than temporary impairment losses (3)			(2.5	)			(9.5	)			7.0				(9.2	)			(85.3	)			76.1
Other income, less other expenses			(9.1	)			(12.2	)			3.1				(25.1	)			(31.7	)			6.6
Total AIHL insurance group			66.1				102.1				(36.0	)			237.9				116.0				121.9
Corporate activities (4)
Net investment income			(1.1	)			(14.0	)			12.9				(3.3	)			(17.1	)			13.8
Net realized capital gains			0.1				1.1				(1.0	)			4.4				114.7				(110.3	)
Other than temporary impairment losses			—				—				—				—				—				—
Other income			5.2				—				5.2				6.5				0.1				6.4
Corporate administration and other expenses			9.3				8.5				(0.8	)			21.9				16.7				(5.2	)
Interest expense			0.6				0.2				(0.4	)			0.7				0.5				(0.2	)
Total Corporate activities			(5.7	)			(21.6	)			15.9				(15.0	)			80.5				(95.5	)
Total		$	60.4			$	80.5				(20.1	)		$	222.9			$	196.5				26.4
Income taxes			23.8				31.0				7.2				61.8				56.4				(5.4	)
Net earnings		$	36.6			$	49.5				(12.9	)		$	161.1			$	140.1				21.0

     Results for the 2010 third quarter, compared with the corresponding 2009 period, primarily reflect a decrease in AIHL’s pre-tax earnings, partially offset by lower pre-tax net losses at Corporate activities. The decrease in AIHL’s pre-tax earnings in the 2010 third quarter primarily reflects a decrease in AIHL insurance group underwriting profit, mainly due to lower net premiums earned at RSUI and PCC and higher catastrophe losses at RSUI, and a decrease in net realized capital gains. The lower pre-tax net losses at Corporate activities in the 2010 third quarter primarily reflect a significant decrease in losses related to Alleghany’s investment in ORX.

     Results for the first nine months of 2010, compared with the corresponding 2009 period, primarily reflect an increase in AIHL’s pre-tax earnings, partially offset by pre-tax net losses at Corporate activities. The increase in AIHL’s pre-tax earnings in the first nine months of 2010

primarily reflects a decrease in PCC’s underwriting loss, mainly due to no material adverse reserve adjustments by PCC in the 2010 period, compared with $34.5 million of adverse reserve development in the first nine months of 2009, and a decrease in other-than-temporary impairment losses due primarily to improved equity market conditions since the 2009 first quarter. Pre-tax net losses at Corporate activities in the first nine months of 2010 primarily reflect a substantial decrease in net realized capital gains as a result of the absence of sales of common stock of Burlington Northern Santa Fe Corporation in such period, compared with significant sales of such common stock during the first nine months of 2009.

     Mr. Hicks commented that “I am pleased that we were able to grow stockholders’ equity per common share by 6.1% in the first nine months of 2010 despite the continuation of a competitive property and casualty insurance market and challenging investment environment. Although facing continued pricing pressure, RSUI and CATA produced underwriting profits in the first nine months of 2010 and will continue to strive to maintain disciplined pricing in this environment. RSUI and CATA third quarter results were not affected positively or negatively by prior accident year loss reserve development. RSUI 2010 nine month results include a net $8.5 million release of prior accident year loss reserves and CATA 2010 nine month results include a net $4.3 million release of prior accident year loss reserves. Pacific Compensation continues to execute on its plan to re-emerge as an agency carrier during 2011 if it believes adequate rates can be achieved.

     “On a consolidated basis, the total return on our investments, excluding other invested assets consisting primarily of our Homesite and ORX investments, was 4.7% in the first nine months of 2010, with our fixed income portfolio providing a total return of 6.2% and our equity portfolio providing a total return of 0.7%, trailing the S&P 500’s total return of 3.9% for the same period.”

     Information regarding the pre-tax results of AIHL’s operating units is attached as Exhibit A. During the first nine months of 2010, Alleghany purchased in the open market an aggregate of 230,122 shares of its common stock for approximately $66.6 million, at an average price per share of $289.21 (such share and average price amounts are not adjusted for the stock dividend declared in February 2010), pursuant to the previously announced authorization by its Board of Directors to repurchase up to $300.0 million of Alleghany’s common stock. As of September 30, 2010, $284.8 million of this program was utilized. In July 2010, the Board of Directors authorized Alleghany to repurchase additional shares of its common stock, at such times and at such prices as management may determine advisable, up to an aggregate of $300.0 million upon completion of the current program. As of November 4, 2010, Alleghany had 8,820,093 shares of its common stock outstanding, adjusted to reflect the stock dividend declared in February 2010.

     Additional information regarding Alleghany’s results for the third quarter and first nine months of 2010, including management’s discussion and analysis of Alleghany’s financial condition and results of operations for the third quarter and first nine months of 2010, is contained in Alleghany’s Quarterly Report on Form 10-Q for the period ended September 30, 2010, to be filed with the U.S. Securities and Exchange Commission on or about November 5, 2010. The Form 10-Q will be available on Alleghany’s website at www.alleghany.com and on the Securities and Exchange Commission’s website at www.sec.gov. Readers are urged to review the Form 10-Q for a more complete discussion of Alleghany’s financial performance.

Comment on Regulation G

     This press release includes certain non-GAAP financial measures. The reconciliations of such measures to the most comparable GAAP financial measures are included in Exhibit A of this press release. Throughout this press release Alleghany presents its operations in the way it believes will be most meaningful and useful to the investing public and others who use such information in evaluating Alleghany’s results.

     Alleghany shows earnings before income taxes (a GAAP financial measure), as well as underwriting profit (a non-GAAP financial measure), which is earnings before income taxes, adjusted to exclude the impact of net investment income, net realized capital gains, other-than-temporary impairment losses and other income, less other expenses. The presentation of underwriting profit is intended to enhance the understanding of AIHL’s insurance operating units’ operating results by highlighting earnings attributable to their underwriting performance.

     With respect to AIHL’s insurance operating units, earnings before income taxes may show a profit despite an underlying underwriting loss. If underwriting losses persist over extended periods, an insurance company’s ability to continue as an ongoing concern may be at risk. Investors should consider the non-GAAP measures contained herein in addition to, and not as a substitute for, measures of financial performance prepared in accordance with GAAP.

# # #

Forward-looking Statements

     This release contains disclosures which are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that do not relate solely to historical or current facts, and can be identified by the use of words such as “may,” “will,” “expect,” “project,” “estimate,” “anticipate,” “plan,” “believe,” “potential,” “should,” “continue” or the negative versions of those words or other comparable words. These forward-looking statements are based upon Alleghany’s current plans or expectations and are subject to a number of uncertainties and risks that could significantly affect current plans, anticipated actions and Alleghany’s future financial condition and results. These statements are not guarantees of future performance, and Alleghany has no specific intention to update these statements. The uncertainties and risks include, but are not limited to, risks relating to

	•		significant weather-related or other natural or human-made catastrophes and disasters;
	•		the cyclical nature of the property and casualty insurance industry;
	•		adverse loss development for events insured by Alleghany’s insurance operating units in either the current year or prior years;
	•		changes in market prices of our significant equity investments and changes in value of our debt securities portfolio;
	•		the long-tail and potentially volatile nature of certain casualty lines of business written by Alleghany’s insurance operating units;
	•		the cost and availability of reinsurance;
	•		exposure to terrorist acts;
	•		the willingness and ability of Alleghany’s insurance operating units’ reinsurers to pay reinsurance recoverables owed to such insurance operating units;

	•		changes in the ratings assigned to Alleghany’s insurance operating units;
	•		claims development and the process of estimating reserves;
	•		legal and regulatory changes, including the new federal financial regulatory reform of the insurance industry established by the Dodd-Frank Wall Street Reform and Consumer Protection Act;
	•		the uncertain nature of damage theories and loss amounts; and
	•		increases in the levels of risk retention by Alleghany’s insurance operating units.

     Additional risks and uncertainties include general economic and political conditions, including the effects of a prolonged U.S. or global economic downturn or recession; changes in costs; variations in political, economic or other factors; risks relating to conducting operations in a competitive environment; effects of acquisition and disposition activities, inflation rates or recessionary or expansive trends; changes in interest rates; extended labor disruptions, civil unrest or other external factors over which we have no control; and changes in our plans, strategies, objectives, expectations or intentions, which may happen at any time at our discretion. As a consequence, current plans, anticipated actions and future financial condition and results may differ from those expressed in any forward-looking statements made by us or on our behalf.

ALLEGHANY CORPORATION
COMBINING STATEMENTS OF EARNINGS
(dollars in thousands)
(unaudited)

		THREE MONTHS ENDED 9/30/10												THREE MONTHS ENDED 9/30/09
		ALLEGHANY												ALLEGHANY
		INSURANCE				CORPORATE								INSURANCE				CORPORATE
		HOLDINGS				ACTIVITIES				COMBINED				HOLDINGS				ACTIVITIES				COMBINED
Revenues
Net premiums earned		$	190,632			$	0			$	190,632			$	217,619			$	0			$	217,619
Net investment income			30,544				(1,120	)			29,424				29,993				(14,015	)			15,978
Net realized capital (losses) gains			27,151				97				27,248				62,908				1,112				64,020
Other than temporary impairment losses			(2,453	)			0				(2,453	)			(9,536	)			0				(9,536	)
Other income			146				5,166				5,312				247				2				249
Total revenues		$	246,020			$	4,143			$	250,163			$	301,231				($12,901	)		$	288,330
Costs and expenses
Loss and loss adjustment expenses			106,416				0				106,416				118,324				0				118,324
Commissions, brokerage and other underwriting expenses			64,202				0				64,202				68,404				0				68,404
Other operating expenses			9,160				768				9,928				12,411				416				12,827
Corporate administration			10				8,543				8,553				15				8,097				8,112
Interest expense			145				551				696				0				168				168
Total costs and expenses		$	179,933			$	9,862			$	189,795			$	199,154			$	8,681			$	207,835
Earnings before income taxes		$	66,087				($5,719	)		$	60,368			$	102,077				($21,582	)		$	80,495
Income taxes											23,736												31,007
Net earnings										$	36,632											$	49,488
Net earnings										$	36,632											$	49,488
Preferred dividends											0												0
Net earnings available to common stockholders										$	36,632											$	49,488

ALLEGHANY CORPORATION
COMBINING STATEMENTS OF EARNINGS
(dollars in thousands)
(unaudited)

		NINE MONTHS ENDED 9/30/10												NINE MONTHS ENDED 9/30/09
		ALLEGHANY												ALLEGHANY
		INSURANCE				CORPORATE								INSURANCE				CORPORATE
		HOLDINGS				ACTIVITIES				COMBINED				HOLDINGS				ACTIVITIES				COMBINED
Revenues
Net premiums earned		$	574,141			$	0			$	574,141			$	640,193			$	0			$	640,193
Net investment income			96,882				(3,335	)			93,547				84,674				(17,103	)			67,571
Net realized capital gains			82,595				4,428				87,023				89,372				114,622				203,994
Other than temporary impairment losses			(9,233	)			0				(9,233	)			(85,337	)			0				(85,337	)
Other income			433				6,513				6,946				1,134				135				1,269
Total revenues		$	744,818			$	7,606			$	752,424			$	730,036			$	97,654			$	827,690
Costs and expenses
Loss and loss adjustment expenses			286,070				0				286,070				375,078				0				375,078
Commissions, brokerage and other underwriting expenses			195,331				0				195,331				206,126				0				206,126
Other operating expenses			25,071				1,790				26,861				32,902				1,323				34,225
Corporate administration			34				20,077				20,111				35				15,215				15,250
Interest expense			439				692				1,131				0				500				500
Total costs and expenses		$	506,945			$	22,559			$	529,504			$	614,141			$	17,038			$	631,179
Earnings before income taxes		$	237,873				($14,953	)		$	222,920			$	115,895			$	80,616			$	196,511
Income taxes											61,848												56,448
Net earnings										$	161,072											$	140,063
Net earnings										$	161,072											$	140,063
Preferred dividends											0												6,158
Net earnings available to common stockholders										$	161,072											$	133,905

ALLEGHANY CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(dollars in thousands, except share amounts)

		September 30,
		2010				December 31,
		(unaudited)				2009
Assets
Investments
Available for sale securities at fair value:
Equity securities (cost: 2010 $929,850; 2009 $530,945)		$	936,613			$	624,546
Debt securities (amortized cost: 2010 $3,061,147; 2009 $3,235,595)			3,197,688				3,289,013
Short-term investments			413,804				262,903
			4,548,105				4,176,462
Other invested assets			201,098				238,227
Total investments			4,749,203				4,414,689
Cash			103,459				32,526
Premium balances receivable			121,424				145,992
Reinsurance recoverables			919,056				976,172
Ceded unearned premium reserves			156,989				160,713
Deferred acquisition costs			71,391				71,098
Property and equipment at cost, net of accumulated depreciation and amortization			19,527				20,097
Goodwill and other intangibles, net of amortization			143,151				145,667
Net deferred tax assets			111,865				124,266
Other assets			98,724				101,550
		$	6,494,789			$	6,192,770
Liabilities and Stockholders’ Equity
Losses and loss adjustment expenses		$	2,388,826			$	2,520,979
Unearned premiums			568,508				573,906
Senior Notes			298,896				0
Reinsurance payable			47,900				51,795
Current taxes payable			4,690				3,827
Other liabilities			372,390				324,742
Total liabilities			3,681,210				3,475,249
Common stock (shares authorized: 2010 and 2009 - 22,000,000; issued and outstanding: 2010 - 9,118,086; 2009 - 9,300,734)			9,118				9,118
Contributed capital			928,403				921,225
Accumulated other comprehensive income			96,643				94,045
Treasury stock, at cost (2010 - 297,794 shares; 2009 - 258,013 shares)			(83,442	)			(66,325	)
Retained earnings			1,862,857				1,759,458
Total stockholders’ equity			2,813,579				2,717,521
		$	6,494,789			$	6,192,770

Exhibit A

AIHL Operating Unit Pre-Tax Results

		Three months ended September 30, 2010																				Nine months ended September 30, 2010
(in millions, except ratios)		RSUI				AIHL Re				CATA				PCC				AIHL				RSUI				AIHL Re				CATA				PCC				AIHL
Gross premiums written		$	214.2			$	—			$	44.0			$	(0.5	)		$	257.7			$	736.9			$	—			$	131.5			$	1.3			$	869.7
Net premiums written			133.0				—				41.5				(0.5	)			174.0				448.5				—				124.0				1.2				573.7
Net premiums earned (1)		$	148.5			$	—			$	42.0			$	0.1			$	190.6			$	445.1			$	—			$	124.1			$	4.9			$	574.1
Loss and loss adjustment expenses			80.2				—				25.8				0.4				106.4				215.4				—				66.4				4.3				286.1
Commissions, brokerage and other underwriting expenses (2)			41.7				—				16.4				6.1				64.2				122.5				—				54.9				17.9				195.3
Underwriting profit (loss) (3)		$	26.6			$	—			$	(0.2	)		$	(6.4	)		$	20.0			$	107.2			$	—			$	2.8			$	(17.3	)		$	92.7
Net investment income (1)																			30.5																				96.9
Net realized capital gains (1)																			27.2																				82.6
Other than temporary impairment losses (1)																			(2.5	)																			(9.2	)
Other income (1)																			0.2																				0.4
Other expenses (2)																			9.3																				25.5
Earnings before income taxes																		$	66.1																			$	237.9
Loss ratio (4)			54.0	%			—				61.5	%			378	%			55.8	%			48.4	%			—				53.5	%			87.1	%			49.8	%
Expense ratio (5)			28.1	%			—				38.9	%			7220	%			33.7	%			27.5	%			—				44.2	%			361.7	%			34.0	%
Combined ratio (6)			82.1	%			—				100.4	%			7598	%			89.5	%			75.9	%			—				97.7	%			448.8	%			83.8	%

		Three months ended September 30, 2009																				Nine months ended September 30, 2009
		RSUI				AIHL Re				CATA				PCC				AIHL				RSUI				AIHL Re				CATA				PCC				AIHL
Gross premiums written		$	231.0			$	—			$	42.1			$	12.4			$	285.5			$	818.1			$	—			$	129.3			$	44.5			$	991.9
Net premiums written			140.7				—				40.7				11.2				192.6				499.9				—				122.2				38.3				660.4
Net premiums earned (1)		$	160.1			$	—			$	41.6			$	15.9			$	217.6			$	480.0			$	—			$	124.8			$	35.4			$	640.2
Loss and loss adjustment expenses			82.9				—				21.0				14.4				118.3				236.5				—				60.9				77.7				375.1
Commissions, brokerage and other underwriting expenses (2)			43.9				—				18.3				6.2				68.4				127.2				—				55.7				23.2				206.1
Underwriting profit (loss) (3)		$	33.3			$	—			$	2.3			$	(4.7	)		$	30.9			$	116.3			$	—			$	8.2			$	(65.5	)		$	59.0
Net investment income (1)																			30.0																				84.7
Net realized capital gains (1)																			62.9																				89.3
Other than temporary impairment losses (1)																			(9.5	)																			(85.3	)
Other income (1)																			0.2																				1.1
Other expenses (2)																			12.4																				32.8
Earnings before income taxes																		$	102.1																			$	116.0
Loss ratio (4)			51.8	%			—				50.5	%			90.2	%			54.4	%			49.3	%			—				48.8	%			219.1	%			58.6	%
Expense ratio (5)			27.4	%			—				43.9	%			39.8	%			31.4	%			26.5	%			—				44.6	%			65.8	%			32.2	%
Combined ratio (6)			79.2	%			—				94.4	%			130.0	%			85.8	%			75.8	%			—				93.4	%			284.9	%			90.8	%