A summary of the significant components of the Company’s revenues and expenses by segment is as follows:




Three months ended September 30, 2017	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	325,395		$	314,881		$	(7	)	$	640,269
Net premiums written	$	269,393		$	213,835		$	(7	)	$	483,221
Net premiums earned	$	336,838		$	210,961		$	(7	)	$	547,792
Net claims and claim expenses incurred	1,044,418			177,433			(155		)	1,221,696
Acquisition expenses	17,514			59,248			(1		)	76,761
Operational expenses	25,123			17,389			25			42,537
Underwriting (loss) income	$	(750,217	)	$	(43,109	)	$	124		(793,202		)
Net investment income							40,257			40,257
Net foreign exchange losses							(156		)	(156		)
Equity in earnings of other ventures							1,794			1,794
Other income							2,996			2,996
Net realized and unrealized gains on investments							42,052			42,052
Corporate expenses							(4,413		)	(4,413		)
Interest expense							(11,799		)	(11,799		)
Loss before taxes										(722,471		)
Income tax benefit							18,977			18,977
Net loss attributable to redeemable noncontrolling interests							204,277			204,277
Dividends on preference shares							(5,595		)	(5,595		)
Net loss attributable to RenaissanceRe common shareholders										$	(504,812	)

Net claims and claim expenses incurred – current accident year	$	1,036,586		$	172,675		$	—		$	1,209,261
Net claims and claim expenses incurred – prior accident years	7,832			4,758			(155		)	12,435
Net claims and claim expenses incurred – total	$	1,044,418		$	177,433		$	(155	)	$	1,221,696

Net claims and claim expense ratio – current accident year	307.7		%	81.9		%				220.8		%
Net claims and claim expense ratio – prior accident years	2.4		%	2.2		%				2.2		%
Net claims and claim expense ratio – calendar year	310.1		%	84.1		%				223.0		%
Underwriting expense ratio	12.6		%	36.3		%				21.8		%
Combined ratio	322.7		%	120.4		%				244.8		%




Nine months ended September 30, 2017	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,345,271		$	1,044,510		$	(7	)	$	2,389,774
Net premiums written	$	895,728		$	687,381		$	(7	)	$	1,583,102
Net premiums earned	$	716,024		$	580,085		$	(7	)	$	1,296,102
Net claims and claim expenses incurred	1,116,273			441,801			(710		)	1,557,364
Acquisition expenses	75,117			173,179			(2		)	248,294
Operational expenses	76,841			54,708			37			131,586
Underwriting (loss) income	$	(552,207	)	$	(89,603	)	$	668		(641,142		)
Net investment income							148,745			148,745
Net foreign exchange gains							11,118			11,118
Equity in earnings of other ventures							5,830			5,830
Other income							7,053			7,053
Net realized and unrealized gains on investments							143,538			143,538
Corporate expenses							(14,335		)	(14,335		)
Interest expense							(32,416		)	(32,416		)
Loss before taxes										(371,609		)
Income tax benefit							14,739			14,739
Net income attributable to redeemable noncontrolling interests							132,338			132,338
Dividends on preference shares							(16,786		)	(16,786		)
Net loss attributable to RenaissanceRe common shareholders										$	(241,318	)

Net claims and claim expenses incurred – current accident year	$	1,133,241		$	427,786		$	—		$	1,561,027
Net claims and claim expenses incurred – prior accident years	(16,968		)	14,015			(710		)	(3,663		)
Net claims and claim expenses incurred – total	$	1,116,273		$	441,801		$	(710	)	$	1,557,364

Net claims and claim expense ratio – current accident year	158.3		%	73.7		%				120.4		%
Net claims and claim expense ratio – prior accident years	(2.4		)%	2.5		%				(0.2		)%
Net claims and claim expense ratio – calendar year	155.9		%	76.2		%				120.2		%
Underwriting expense ratio	21.2		%	39.2		%				29.3		%
Combined ratio	177.1		%	115.4		%				149.5		%




Three months ended September 30, 2016	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	119,904		$	310,320		$	—		$	430,224
Net premiums written	$	90,909		$	193,313		$	—		$	284,222
Net premiums earned	$	172,661		$	173,860		$	—		$	346,521
Net claims and claim expenses incurred	23,539			89,844			(808		)	112,575
Acquisition expenses	21,663			58,917			—			80,580
Operational expenses	24,258			16,217			18			40,493
Underwriting income	$	103,201		$	8,882		$	790		112,873
Net investment income							51,423			51,423
Net foreign exchange losses							(5,986		)	(5,986		)
Equity in losses of other ventures							(11,630		)	(11,630		)
Other income							2,268			2,268
Net realized and unrealized gains on investments							59,870			59,870
Corporate expenses							(11,537		)	(11,537		)
Interest expense							(10,536		)	(10,536		)
Income before taxes and noncontrolling interests										186,745
Income tax benefit							1,316			1,316
Net income attributable to noncontrolling interests							(35,641		)	(35,641		)
Dividends on preference shares							(5,595		)	(5,595		)
Net income available to RenaissanceRe common shareholders										$	146,825

Net claims and claim expenses incurred – current accident year	$	42,062		$	116,298		$	—		$	158,360
Net claims and claim expenses incurred – prior accident years	(18,523		)	(26,454		)	(808		)	(45,785		)
Net claims and claim expenses incurred – total	$	23,539		$	89,844		$	(808	)	$	112,575

Net claims and claim expense ratio – current accident year	24.4		%	66.9		%				45.7		%
Net claims and claim expense ratio – prior accident years	(10.8		)%	(15.2		)%				(13.2		)%
Net claims and claim expense ratio – calendar year	13.6		%	51.7		%				32.5		%
Underwriting expense ratio	26.6		%	43.2		%				34.9		%
Combined ratio	40.2		%	94.9		%				67.4		%




Nine months ended September 30, 2016	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,058,816		$	992,669		$	—		$	2,051,485
Net premiums written	$	674,361		$	641,452		$	—		$	1,315,813
Net premiums earned	$	538,953		$	512,576		$	—		$	1,051,529
Net claims and claim expenses incurred	125,618			282,117			(805		)	406,930
Acquisition expenses	71,176			144,001			—			215,177
Operational expenses	79,441			68,261			99			147,801
Underwriting income	$	262,718		$	18,197		$	706		281,621
Net investment income							134,410			134,410
Net foreign exchange losses							(8,368		)	(8,368		)
Equity in losses of other ventures							(3,997		)	(3,997		)
Other income							9,001			9,001
Net realized and unrealized gains on investments							191,295			191,295
Corporate expenses							(25,514		)	(25,514		)
Interest expense							(31,610		)	(31,610		)
Income before taxes and noncontrolling interests										546,838
Income tax expense							(8,040		)	(8,040		)
Net income attributable to noncontrolling interests							(110,867		)	(110,867		)
Dividends on preference shares							(16,786		)	(16,786		)
Net income available to RenaissanceRe common shareholders										$	411,145

Net claims and claim expenses incurred – current accident year	$	163,130		$	320,444		$	—		$	483,574
Net claims and claim expenses incurred – prior accident years	(37,512		)	(38,327		)	(805		)	(76,644		)
Net claims and claim expenses incurred – total	$	125,618		$	282,117		$	(805	)	$	406,930

Net claims and claim expense ratio – current accident year	30.3		%	62.5		%				46.0		%
Net claims and claim expense ratio – prior accident years	(7.0		)%	(7.5		)%				(7.3		)%
Net claims and claim expense ratio – calendar year	23.3		%	55.0		%				38.7		%
Underwriting expense ratio	28.0		%	41.4		%				34.5		%
Combined ratio	51.3		%	96.4		%				73.2		%