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Segment Information
 3 Months Ended
Mar. 31, 2023
Segment Reporting [Abstract]  
Segment Information Segment Information
The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management.

The three reportable segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. In addition, each segment’s customer base has varying characteristics and each segment has a different regulatory environment. While the Company’s management monitors each of the fifteen bank subsidiaries’ operations and profitability separately, these subsidiaries have been aggregated into one reportable operating segment due to the similarities in products and services, customer base, operations, profitability measures, and economic characteristics.

For purposes of internal segment profitability, management allocates certain intersegment and parent company balances. Management allocates a portion of revenues to the specialty finance segment related to loans and leases originated by the specialty finance segment and sold or assigned to the community banking segment. Similarly, for purposes of analyzing the contribution from the wealth management segment, management allocates a portion of the net interest income earned by the community banking segment on deposit balances of customers of the wealth management segment to the wealth management segment. See Note (9) “Deposits” for more information on these deposits. Finally, expenses incurred at the Wintrust parent company are allocated to each segment based on each segment’s risk-weighted assets.

The segment financial information provided in the following table has been derived from the internal profitability reporting system used by management to monitor and manage the financial performance of the Company. The accounting policies of the segments are substantially similar to those described in Note (1) “Summary of Significant Accounting Policies” of the 2022 Form 10-K. The Company evaluates segment performance based on after-tax profit or loss and other appropriate profitability measures common to each segment.
The following is a summary of certain operating information for reportable segments:
Three Months Ended$ Change in
Contribution		% Change  in
Contribution
(Dollars in thousands)March 31,
2023		March 31,
2022
Net interest income:
Community Banking$369,848 $228,615 $141,233 62 %
Specialty Finance70,351 55,370 14,981 27 
Wealth Management8,955 8,376 579 7 
Total Operating Segments449,154 292,361 156,793 54 
Intersegment Eliminations8,841 6,933 1,908 28 
Consolidated net interest income$457,995 $299,294 $158,701 53 %
Provision for credit losses:
Community Banking$21,099 $4,118 $16,981 NM
Specialty Finance1,946 (12)1,958 NM
Wealth Management— — — — 
Total Operating Segments23,045 4,106 18,939 NM
Intersegment Eliminations— — — — 
Consolidated provision for credit losses$23,045 $4,106 $18,939 NM
Non-interest income:
Community Banking$68,733 $121,888 $(53,155)(44)%
Specialty Finance25,790 24,122 1,668 7 
Wealth Management30,297 30,578 (281)(1)
Total Operating Segments124,820 176,588 (51,768)(29)
Intersegment Eliminations(17,051)(13,798)(3,253)24 
Consolidated non-interest income$107,769 $162,790 $(55,021)(34)%
Net revenue:
Community Banking$438,581 $350,503 $88,078 25 %
Specialty Finance96,141 79,492 16,649 21 
Wealth Management39,252 38,954 298 1 
Total Operating Segments573,974 468,949 105,025 22 
Intersegment Eliminations(8,210)(6,865)(1,345)20 
Consolidated net revenue$565,764 $462,084 $103,680 22 %
Segment profit:
Community Banking$134,232 $90,099 $44,133 49 %
Specialty Finance36,737 29,604 7,133 24 
Wealth Management9,229 7,688 1,541 20 
Consolidated net income$180,198 $127,391 $52,807 41 %
Segment assets:
Community Banking$41,611,980 $40,050,015 $1,561,965 4 %
Specialty Finance9,841,044 8,624,501 1,216,543 14 
Wealth Management1,420,487 1,576,145 (155,658)(10)
Consolidated total assets$52,873,511 $50,250,661 $2,622,850 5 %
NM - Not meaningful