Investor Presentation Wells Fargo Financial Services Investor Forum May 23, 2018 Exhibit 99.1

Disclaimer Forward-Looking Statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 that involve significant risks, assumptions, and uncertainties, including statements relating to the market opportunity and future business prospects of Stifel Financial Corp., as well as Stifel, Nicolaus & Company, Incorporated and its subsidiaries (collectively, “SF” or the “Company”). These statements can be identified by the use of the words “may,” “will,” “should,” “could,” “would,” “plan,” “potential,” “estimate,” “project,” “believe,” “intend,” “anticipate,” “expect,” and similar expressions. In particular, these statements may refer to our goals, intentions, and expectations, our business plans and growth strategies, our ability to integrate and manage our acquired businesses, estimates of our risks and future costs and benefits, and forecasted demographic and economic trends relating to our industry. You should not place undue reliance on any forward-looking statements, which speak only as of the date they were made. We will not update these forward-looking statements, even though our situation may change in the future, unless we are obligated to do so under federal securities laws. Actual results may differ materially and reported results should not be considered as an indication of future performance. Factors that could cause actual results to differ are included in the Company’s annual and quarterly reports and from time to time in other reports filed by the Company with the Securities and Exchange Commission and include, among other things, changes in general economic and business conditions, actions of competitors, regulatory and legal actions, changes in legislation, and technology changes. Use of Non-GAAP Financial Measures The Company utilized certain non-GAAP calculations as additional measures to aid in understanding and analyzing the Company’s financial results for the three months ended March 31, 2018. Specifically, the Company believes that the non-GAAP measures provide useful information by excluding certain items that may not be indicative of the Company’s core operating results and business outlook. The Company believes that these non-GAAP measures will allow for a better evaluation of the operating performance of the business and facilitate a meaningful comparison of the Company’s results in the current period to those in prior and future periods. Reference to these non-GAAP measures should not be considered as a substitute for results that are presented in a manner consistent with GAAP. These non-GAAP measures are provided to enhance investors' overall understanding of the Company’s current financial performance. The non-GAAP financial information should be considered in addition to, not as a substitute for or as being superior to, operating income, cash flows, or other measures of financial performance prepared in accordance with GAAP. These non-GAAP measures primarily exclude expenses which management believes are, in some instances, non-recurring and not representative of ongoing business. Management has not included costs which they believe are duplicative in the analysis below, which is a change from prior periods. A limitation of utilizing these non-GAAP measures is that the GAAP accounting effects of these charges do, in fact, reflect the underlying financial results of the Company’s business and these effects should not be ignored in evaluating and analyzing its financial results. Therefore, the Company believes that GAAP measures and the same respective non-GAAP measures of the Company’s financial performance should be considered together.

Our Strategy

Strategic Vision To build a premier wealth management and investment banking firm Global Wealth Management Institutional Private Client 2,266 financial advisors in 361 branches with more than $244B in client assets Asset Management $29B in total assets managed through various strategies Bank $15B in assets funded by client deposits Equities Sales + Trading Fixed Income Sales + Trading Investment Banking Research Experienced sales force with extensive distribution capabilities Comprehensive platform including research, strategy and DCM teams Over 400 professionals with extensive experience across all products and industry verticals Largest research platform with more than 1,230 stocks covered in the U.S. and nearly 340 stocks covered in Europe

A History of Growth 2005 Legg Mason’s Capital Markets Division 2008 Butler Wick 2009 56 UBS Private Client Branches 2010 Thomas Weisel Partners 2007 Ryan Beck Acquisition Stifel Bank & Trust 2011 Stone & Youngberg 2012 Miller Buckfire 2013 Knight Capital Group’s Fixed Income Division 2014 De La Rosa, Oriel Securities, 1919 Investment Counsel, Merchant Capital 2013 Keefe, Bruyette & Woods 2013 Acacia Bank & Ziegler Lotsoff 2015 Barclays Wealth & Investment Management, Sterne Agee, 2016 Eaton Partners ISM Capital 21% CAGR * 2018 full year non-GAAP Net Revenues based on annualized results as of 3/31/2018 2017 City Securities 2018 Ziegler Wealth Management Business Bancshares Inc.

10 Years of Substantial Growth *Non-GAAP Results ** Share Price and Market Capitalization as of 1/24/2018, FactSet

Driving Shareholder Value Through Deal Integration & Balance Sheet Growth

139% Growth 128% Growth Infrastructure Build Balance Sheet Growth

Bank Drove Significant Balance Sheet & Revenue Growth Bank growth has been balanced between loans and investments: Loans: Comprised of securities based loans, C&I, and residential mortgages Focused lending to high net worth retail clients AFS & HTM Investments: Portfolio primarily GSE MBS, ABS, and Corporate bonds Effective duration of less than 1.6 years as of 3/31/18

Stifel Overview

Stifel – Premier Investment Bank and Wealth Management Firm Stifel at a Glance 2017 GAAP Net Revenue - $2.9 billion Global Wealth Management (GWM) 2017 Net Revenue - $1.8 billion Institutional Group (IG) 2017 Net Revenue - $1.1billion Private Client Stifel Bank & Trust Margin and Securities-based Lending Asset Management Equity & Fixed Income Capital Raising M&A Advisory / Restructuring Institutional Equity and Fixed Income Brokerage Independent Research Low leverage (7.4x) (1) (2), $2.9 billion stockholders’ equity (2) and $4.3 billion market capitalization (4) 29% Insider ownership aligns employees' interests with other shareholders (5) Approximately 7,200 associates(2) Balanced business mix (62% GWM / 38% IG) (2017 net revenues) National presence with 2,266 financial advisors(2) Largest U.S. equity research platform with roughly 1,230 stocks under coverage(3) Broad investment banking and institutional sales and trading capabilities – domestic and international Assets / equity. As of 3/31/2018 As of 4/30/2018 As of 5/7/2018. Insider ownership percentage includes all fully diluted shares, units outstanding and options outstanding, as of 3/29/2018.

Leading broker-dealer providing wealth management and institutional services to consumers and companies Bulge Bracket Boutique Size / scale Large distribution Trading Retail Issues Lack of focus Banker turnover Lack of commitment Research indifference Lack of growth investors Firm focus Good research Growth investor access Issues Financial / firm stability Trading support Few with retail Size / scale Firm focus Stability (financial & personnel) Large distribution Trading Outstanding research Retail Institutional Wealth Management LARGEST provider of U.S. equity research 3rd LARGEST Equity trading platform in the U.S. outside of the Bulge Bracket firms(1) FULL SERVICE investment banking with expertise across products and industry sectors ACCESS TO top ten private client platform #7 Largest Retail Brokerage Network(2) Based on 2017 U.S. trading volume per Bloomberg, as of 12/31/2017 Source: SIFMA and publicly available information for U.S. brokerage networks. Includes investment banks only.

Well-diversified, Low Risk Business Model with Balanced Retail and Institutional Exposure Unburdened by capital constraints Low leverage business model and conservative risk management Limited balance sheet risk Stable wealth management business is augmented by profitable and growing institutional business Drive revenue synergies by leveraging the wealth management and institutional business Net Revenues 2016 2017 Operating Contribution 2016 2017 Balanced business model facilitates growth in all market environments Note: Net revenues and operating contribution percentages based on full year 2016 & 2017, excludes the Other segment.

A Stable Track Record Through Multiple Business Cycles Non-GAAP Net Revenues(1) ($MM) Total Equity ($MM) Total Client Assets(2) ($BN) Book Value Per Share(3) 2018 full year non-GAAP net revenues based on annualized result as of 3/31/2018 Excludes impact of sale of Sterne Agee Independent Contractor & Correspondent Clearing businesses Book Value Per Share adjusted for April 2011 three-for-two stock split (2006-2010) and represents common equity per shares outstanding

Global Wealth Management

Global Wealth Management (GWM) Provides Securities Brokerage Services and Stifel Bank Products Overview National Presence Grown from 600+ financial advisors in 2005 to 2,266 financial advisors currently Proven organic growth and acquirer of private client business Strategy of recruiting experienced advisors with established client relationships Expanding U.S. footprint Net Revenues ($MM) (1) Operating Contribution ($MM) (1) 2017 full year net revenue and operating contribution based on annualized results as of 9/30/2017 2018 full year results based on annualized result as of 3/31/2018

Building Scale and Capabilities into a $1.8B Revenue Segment Private Client Asset Management Bank 56 UBS Branches Private Client – 350 financial advisors and support Revenue production has exceeded expectations October 2009 Private Client – 75 financial advisors Public Finance December 2008 Private Client – 400 financial advisors Capital Markets February 2007 Asset Management Over $4 billion in assets November 2013 Customized investment advisory and trust services November 2014 ~100 advisors managing over $20B in AUM December 2015 ~130 advisors managing ~ $10B in AUM June 2015 Bank holding company April 2007 One-branch community bank; 95% of loan portfolio sold in 3Q15 October 2013 ~40 advisors managing ~$4B in AUM January 2017 55 advisors managing ~$5B in AUM March 2018 One-branch community bank; $620 million in assets Acquisition expected to close in fourth quarter of 2018

GWM - Private Client Group Key Operating Metrics Accounts(1) Financial Advisors(1) Total Client Assets(1) ($MM) Branches(1) Excludes Legacy Sterne Agee Independent Contractor Business.

GWM – Stifel Bank & Trust Acquired FirstService Bank, a St. Louis-based, Missouri-chartered commercial bank, in April 2007 Stifel Financial became a bank holding company and financial services holding company Substantial Balance sheet growth with low-risk assets Funded by Stifel Nicolaus client deposits Maintain high levels of liquidity Overview Key Statistics (000s) (3) Investment Portfolio(1) Loan Portfolio(2) Interest Earnings Assets Note: Key Statistic Data as of 3/31/2018. Non-agency MBS makes up less than 1% of Investment Portfolio. Other includes construction and land, consumer loans, and home equity lines of credit. NPAs include: nonaccrual loans, restructured loans, loans 90+ days past due, and other real estate owned.

Growing Asset Management Capabilities Asset Management Subsidiaries with $29.1 Billion in Client Assets As of March 31, 2018. Ziegler Capital Management, LLC, 1919 Investment Counsel, LLC, Choice Financial Partners, Inc. d/b/a EquityCompass Strategies, and Washington Crossing Advisors, LLC are wholly-owned subsidiaries and affiliated SEC Registered Investment Advisers of Stifel Financial Corp. Assets represents the aggregate fair value of all discretionary and non-discretionary Assets Under Management and Assets Under Advisement, including fee-paying and non-fee-paying portfolios. Total includes $305 million in venture capital funds managed by Thomas Weisel Global Growth Partners, LLC Assets $11.3 Billion $11.4 Billion $3.8 Billion $2.3 Billion Offices Chicago Baltimore BaltimoreBoston Florham Park, NJ St. Louis Birmingham, AL Milwaukee Cincinnati New York New York San Francisco Philadelphia

Institutional Group

Institutional Group Net Revenues ($MM)(2)(3)(4) Fixed Income Brokerage + Investment Banking (4) Overview Equity Brokerage + Investment Banking (4) Provides securities brokerage, trading, research, underwriting and corporate advisory services Largest provider of U.S. Equity Research 3rd largest Equity trading platform in the U.S. outside of the Bulge Bracket(1) Full-service Investment Bank Comprehensive Fixed Income platform Based on 2017 U.S. trading volume per Bloomberg., as of 12/31/2017. Includes Thomas Weisel historical investment banking revenues for years 2006 through September 30, 2010. 2012 includes realized and unrealized gains on the Company’s investment in Knight Capital Group, Inc. of $39.0 million 2018 full year net revenues based on annualized result as of 3/31/2018

Equities Fixed Income Investment Banking Building Scale and Capabilities into a $1.0B Revenue Segment Growth Focused Investment Banking, Research, Sales and Trading July 2010 Core of our Institutional sales, trading and research group December 2005 Knight Fixed Income IB, Sales and Trading, Private Client October 2011 Fixed Income Sales and Trading – U.S. & Europe, Fixed Income Research July 2013 California-based investment bank and bond underwriter April 2014 Expands Public Finance in Southeast December 2014 Highly complementary fixed income platforms June 2015 Enhances European debt capital markets capabilities February 2016 FIG Investment Banking/FIG Sales and Trading / Research February 2013 Restructuring advisory December 2012 UK-based full service investment bank July 2014 One of the largest, global fund placement and advisory firms January 2016

Institutional Group – Advisory 2010-2018 YTD: Leadership in M&A of Public Companies and deals < $1bn. Public Deals < $1 Billion in Value All Deals < $1 Billion in Value Source: Dealogics M&A Analytics as of April 30,2018. Note: Includes all sell-side and buy-side strategic or sponsor-backed disclosed value deals, where the deal is announced between 2010 and 2018 YTD, with a U.S. target, acquirer, acquirer subsidiary or divestor, and a final stake greater than 50%. All Firms Middle Market Firms

Institutional Group – Equity Underwriting Accomplished U.S. Equity Underwriting Franchise – All Equity Transactions Bookrun Equity Deals Since 2010 All Managed Equity Deals Since 2010 Source: Dealogic. Rank eligible SEC registered IPOs and Follow-On offerings since 2010. Includes demutualizations. As of 4/30/2018. Overlapping deals between Stifel and its acquired firms have been removed. Note: $ Volume represents full credit to underwriter for All Managed Equity Deals and apportioned credit to bookrunner for Bookrun Equity Deals. Bold font indicates middle-market firms.

Institutional Group – Research Largest U.S. Equity Research Platform U.S. Equity Research Coverage (1)(2) Coverage Balanced Across All Market Caps (1) Stifel Research Highlights Largest provider of U.S. Equity Research Largest provider of U.S. Small Cap Research² #1 U.S. provider of Financial Services coverage Ranked #1 in 2016 & 2017 Thomson Reuters StarMine Awards Only firm ranked in the Top 10 each year for the last 11 years in the Thomson Reuter StarMine Analyst Awards Source: StarMine rankings as of 4/30/18. Overall coverage includes only companies with a rating & domiciled in the U.S. Does not include Closed End Funds. Small Cap includes market caps less than $1 billion; Mid Cap includes market caps less than $5 billion.

Institutional Group – Equity Sales and Trading Powerful Platform Spanning North America and Europe Institutional Equity Sales Equity Trading Extensive Distribution Network Relationships with over 3,500 institutional accounts globally Active daily market maker in over 3,700 stocks Traded over 6.5 billion shares in 2017 Complete coverage of North America and Europe for North American listed equities Major liquidity provider to largest equity money management complexes Multi-execution venues: high-touch, algorithms, program trading, and direct market access Dedicated convertible sales, trading, and research desk 27 sales traders located in Baltimore, New York, Boston,, San Francisco, and London 11 position traders covering each major industry 13 specialized traders focused on: Option Trading, Convertible & ETF Trading Profitable model with advantages of scale 78 person sales force, commission-based Experts in small and mid cap growth and value Team-based sales model with 2 - 4 coverage sales people per account Team leaders have an average of 15 years experience Offices in all major institutional markets in North America & Europe Accounts range from large mutual funds to small industry-focused investors Managed over 725 non-deal roadshow days in 2017 Extensive experience with traditional and overnight corporate finance transactions

Institutional Group – Fixed Income Capital Markets Strong Fixed Income Brokerage Capabilities Overview Client Distribution (1)(2) Platform & Products Comprehensive platform 85 traders with annual client trade volume approaching $600 billion 45-person Fixed Income Research and Strategy Group Widespread distribution Nearly 200 Institutional sales professionals covering over 8,500 accounts 40+ institutional fixed income offices nationwide International offices in London, Zurich and Madrid Customer-driven Focus on long-only money managers and income funds, depositories, and hedge funds Consistency of execution Identification of relative value through asset class/security selection US Government and Agency Securities Mortgage-Backed Securities (MBS) Whole Loans Government-Guaranteed Loans Asset-Backed Securities (ABS) Commercial Mortgage-Backed Securities (CMBS) Certificates of Deposit High Yield and Distressed Credit Loan Trading Group Aircraft Finance & Credit Solutions Hybrid Securities Emerging Markets Structured Products Investment Grade Credit Municipal Sales and Trading and Public Finance UK Sales and Trading (former Knight Capital team) Client Distribution is as of May 2018 Other category includes: Corporation, Trust Company, Credit Union, Pension Fund, Mortgage Company, Foreign Bank, Bank-Trust, Foundation Endowment, University & Non-Profit, Government.

Institutional Group – Public Finance Overview Stifel has ranked in the top ten nationally for senior managed negotiated underwritings for the past five years, and Stifel has ranked #1 nationally for senior managed K-12 negotiated underwritings for 2016 & 2017. Stifel’s Public Finance Group ranked #1 in municipal negotiated issues in 2016 & 2017 Total of 26 Public Finance offices Nearly 150 Public Finance professionals Specialty sectors: Education Local Government/Municipal Healthcare Public-Private Partnerships/Development Housing Source: Thomson Reuters: SDC (True Economics to Book) Ranked by number of transactions.

First Quarter Review

First Quarter Results

Investment Banking, Brokerage Revenue, & Asset Management & Service Fees

GAAP to Non-GAAP Reconciliation Three months ended March 31, 2018

Balance Sheet & Net Interest Margin

Segment Results

Global Wealth Management

Stifel Bank & Trust

Institutional Group