Third Party Reinsurance (Tables)

9 Months Ended

Sep. 30, 2013

OneBeacon

Schedule of Reinsurance Recoverable Amounts by Issuer

The following table provides a listing of OneBeacon’s largest reinsurance recoverable amounts by reinsurer, the percentage of total recoverables and the reinsurers’ A.M. Best Rating. The reinsurance balances associated with the runoff business are included in discontinued operations (see Note 15).

(Millions)	Balance at September 30, 2013	% of Total	A.M. Best Rating(1)
Hannover Ruckversich	$10.3	12%	A+
Munich Reinsurance America	6.6	8%	A+
Platinum Underwriters	5.6	7%	A
Hartford Steam Boiler	4.8	6%	A++
Swiss Reinsurance America Corp	4.6	5%	A+

⁽¹⁾  A.M. Best ratings as detailed above are: “A++” (Superior, which is the highest of sixteen financial strength ratings), “A+” (Superior, which is the second highest of sixteen financial strength ratings) and “A” (Excellent, which is the third highest of sixteen financial strength ratings).

Sirius Group [Member]

Schedule of Reinsurance Recoverable Amounts by Issuer

The following table provides a listing of Sirius Group’s largest reinsurance recoverable amounts by reinsurer, the percentage of total recoverables and the reinsurers’ A.M. Best Rating.

(Millions)	Balance at September 30, 2013	% of Total	A.M. Best Rating(1)	% Collateralized
Berkshire Hathaway	$56.0	16%	A++	—	%
Swiss Re Group	31.3	9%	A+	1	%
Olympus Reinsurance Company(2)	23.0	7%	NR-5	100	%
Lloyds of London(3)	17.5	5%	A	10	%
GIC of India	14.7	4%	A-	1	%

⁽¹⁾  A.M. Best ratings as detailed above are: “A++” (Superior, which is the highest of sixteen financial strength ratings), “A+” (Superior, which is the second highest of sixteen financial strength ratings), “A” (Excellent, which is the third highest of sixteen financial strength ratings), “A-” (Excellent, which is the fourth highest of sixteen financial strength ratings) and “NR-5” (Not formally followed).

⁽²⁾ Non-U.S. insurance entity. The balance is fully collateralized through trust agreements or funds held.

⁽³⁾ Represents the total of reinsurance recoverables due to Sirius Group from all Lloyds Syndicates.