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Regulatory Capital Requirements (Tables)

9 Months Ended

Sep. 30, 2025

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios

The amounts and ratios for Stifel Financial Corp., Stifel Bank & Trust, and Stifel Bank as of September 30, 2025 are represented in the tables below (in thousands, except ratios).


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Financial Corp.		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	3,582,042				14.8	%		$	1,090,596				4.5	%		$	1,575,305				6.5	%
Tier 1 capital			4,267,042				17.6	%			1,454,128				6.0	%			1,938,837				8.0	%
Total capital			4,484,546				18.5	%			1,938,837				8.0	%			2,423,547				10.0	%
Tier 1 leverage			4,267,042				11.1	%			1,533,281				4.0	%			1,916,602				5.0	%


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank & Trust		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	1,323,323				11.1	%		$	537,227				4.5	%		$	775,994				6.5	%
Tier 1 capital			1,323,323				11.1	%			716,302				6.0	%			955,069				8.0	%
Total capital			1,436,908				12.0	%			955,069				8.0	%			1,193,837				10.0	%
Tier 1 leverage			1,323,323				7.1	%			747,814				4.0	%			934,768				5.0	%


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	827,457				12.2	%		$	304,259				4.5	%		$	439,485				6.5	%
Tier 1 capital			827,457				12.2	%			405,678				6.0	%			540,904				8.0	%
Total capital			878,230				13.0	%			540,904				8.0	%			676,130				10.0	%
Tier 1 leverage			827,457				7.1	%			464,632				4.0	%			580,791				5.0	%

The amounts and ratios for Stifel Financial Corp., Stifel Bank & Trust, and Stifel Bank as of December 31, 2024, are represented in the tables below (in thousands, except ratios).


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Financial Corp.		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	3,645,786				15.4	%		$	1,068,371				4.5	%		$	1,543,202				6.5	%
Tier 1 capital			4,330,786				18.2	%			1,424,494				6.0	%			1,899,326				8.0	%
Total capital			4,556,023				19.2	%			1,899,326				8.0	%			2,374,157				10.0	%
Tier 1 leverage			4,330,786				11.4	%			1,522,940				4.0	%			1,903,675				5.0	%


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank & Trust		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	1,366,711				11.1	%		$	555,063				4.5	%		$	801,758				6.5	%
Tier 1 capital			1,366,711				11.1	%			740,084				6.0	%			986,778				8.0	%
Total capital			1,491,850				12.1	%			986,778				8.0	%			1,233,473				10.0	%
Tier 1 leverage			1,366,711				7.1	%			774,495				4.0	%			968,118				5.0	%


		Actual								For Capital Adequacy Purposes								To Be Well Capitalized Under Prompt Corrective Action Provisions
Stifel Bank		Amount				Ratio				Amount				Ratio				Amount				Ratio
Common equity tier 1 capital		$	768,652				13.0	%		$	266,427				4.5	%		$	384,839				6.5	%
Tier 1 capital			768,652				13.0	%			355,236				6.0	%			473,648				8.0	%
Total capital			812,857				13.7	%			473,648				8.0	%			592,060				10.0	%
Tier 1 leverage			768,652				7.1	%			433,925				4.0	%			542,407				5.0	%