Jenn Monahan McDonald, CFP®
Financial Advisor
Phone:
(631) 851-5347(631) 851-5347
Douglas Horn
Managing Director, Wealth Management,
Financial Advisor,
Senior Portfolio Management Director,
Lending Specialist
Direct:
(631) 755-8946(631) 755-8946
Industry Award WinnerMy Mission Statement
Experience, wealth management expertise, and dedicated personal service customized to help you meet your life goals and reduce your stress.
Welcome
Douglas Horn is a Managing Director, Senior Portfolio Management Director, Financial Advisor, and Founding Partner of The Horn Group. He has over 40 years of private wealth management experience and has been with Morgan Stanley since 2014. Doug was named to Forbes Best- in-State Wealth Advisors for 2024.
Doug leverages his extensive analytical experience to create tailored strategies for high-net-worth families, focusing on multigenerational wealth. His collaborative approach recognizes each client’s unique circumstances. He conducts comprehensive financial reviews to align investment plans with values, aspirations, and risk tolerance. Using a systematic process and the firm's modern tools, he provides clients with clear solutions to help achieve their financial goals.
Doug’s successful wealth management practice has been built primarily on referrals, driven by the team’s strong investment performance, extraordinary level of service, and thoughtful advice. This can instill confidence, leading clients to recommend the team to their business associates, friends, and families. Doug takes pride in having worked with clients for decades, helping guide families through various life stages - from planning for their children’s education to retirement and succession to the next generation.
In 1983, Doug began his career in the securities industry at Merrill Lynch where he worked as a Financial Advisors for thirty-one years before joining Morgan Stanley. He graduated from the University of Vermont with a Bachelors in Economics and Business.
Giving back to the community is a core value for Doug. He is a dedicated supporter of the Pan-Mass Challenge, an organization that raises funds for cancer research and treatment at Dana-Farber Cancer Institute, primarily through cycling events. Over the past fifteen years, Doug has participated in the rides, and he continues to be active with the cause. In addition to his commitment to cancer research, he joined the board of the Cold Spring Harbor Lab Association in January of 2024.
Doug and his wife reside in Centerport, NY with their children. In his spare moments, he enjoys cycling, boating, and traveling to new destinations. He also dedicates his time to support the community through volunteer work.
Forbes America's Top Wealth Advisors & Best-In-State Wealth Advisors
Source: Forbes.com (Awarded April 2024) Data compiled by SHOOK Research LLC for the period 6/30/22 - 6/30/23.
Doug leverages his extensive analytical experience to create tailored strategies for high-net-worth families, focusing on multigenerational wealth. His collaborative approach recognizes each client’s unique circumstances. He conducts comprehensive financial reviews to align investment plans with values, aspirations, and risk tolerance. Using a systematic process and the firm's modern tools, he provides clients with clear solutions to help achieve their financial goals.
Doug’s successful wealth management practice has been built primarily on referrals, driven by the team’s strong investment performance, extraordinary level of service, and thoughtful advice. This can instill confidence, leading clients to recommend the team to their business associates, friends, and families. Doug takes pride in having worked with clients for decades, helping guide families through various life stages - from planning for their children’s education to retirement and succession to the next generation.
In 1983, Doug began his career in the securities industry at Merrill Lynch where he worked as a Financial Advisors for thirty-one years before joining Morgan Stanley. He graduated from the University of Vermont with a Bachelors in Economics and Business.
Giving back to the community is a core value for Doug. He is a dedicated supporter of the Pan-Mass Challenge, an organization that raises funds for cancer research and treatment at Dana-Farber Cancer Institute, primarily through cycling events. Over the past fifteen years, Doug has participated in the rides, and he continues to be active with the cause. In addition to his commitment to cancer research, he joined the board of the Cold Spring Harbor Lab Association in January of 2024.
Doug and his wife reside in Centerport, NY with their children. In his spare moments, he enjoys cycling, boating, and traveling to new destinations. He also dedicates his time to support the community through volunteer work.
Forbes America's Top Wealth Advisors & Best-In-State Wealth Advisors
Source: Forbes.com (Awarded April 2024) Data compiled by SHOOK Research LLC for the period 6/30/22 - 6/30/23.
Securities Agent: KY, WA, VT, MI, MA, IL, GA, TX, SC, OH, CA, AZ, NV, DE, DC, WI, TN, MD, WV, VA, PA, NY, NJ, FL, CO, IN, CT, NC, NH; General Securities Representative; Investment Advisor Representative
NMLS#: 578519
NMLS#: 578519
Check the background of Our Firm and Investment Professionals on FINRA's BrokerCheck.*
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Learn MoreOur 3 Step Process
Leveraging our vast resources - including intellectual capital, experience, and dedicated personal service - we can work with you to create a personalized wealth strategy. Then, over time, we can adapt it to changing circumstances, helping you pursue your goals.
1. Consultation & Goal Setting
We begin by getting to know you—your lifestyle, financial goals, and priorities. Together, we'll assess your current financial situation and determine your risk tolerance to build a foundation for your personalized wealth strategy.
2. Personalized Financial Planning & Execution
Based on our initial discussions, we'll develop and present a comprehensive financial plan tailored to your goals. We'll outline clear action steps, covering investment strategies, benefits optimization, and insurance coverage. Once agreed upon, we'll implement the plan to set you on the path to success.
3. Ongoing Monitoring & Strategy Adjustments
Your financial journey doesn't stop at implementation. We'll continuously monitor your progress, adjusting strategies as your life and financial goals evolve. Regular reviews and proactive communication ensure your plan stays aligned with your vision.
INDIVIDUAL PLANS FOR INDIVIDUALS LIKE YOU
Wherever you are in life, whether it be advancing your career, preparing for retirement, or navigating the in-between, we are here to help your reach your financial goals and achieve peace of mind.
Our approach is comprehensive and personalized, to ensure it aligns with your personal and financial ambitions. With an industry leading set of advanced tools and deep industry expertise, we empower you to take confident control of your financial future.
Our approach is comprehensive and personalized, to ensure it aligns with your personal and financial ambitions. With an industry leading set of advanced tools and deep industry expertise, we empower you to take confident control of your financial future.
LifeView Financial Goal Analysis
LifeView is a suite of planning tools that includes goal-specific analysis that we can use with our clients to create a holistic, realistic strategy that integrates the various aspects of an individual's financial life, including investments and cash management needs.
Goals Planning System (GPS)
Goals Planning System (GPS) is Morgan Stanley's own integrated planning tool. Built on the Firm's intellectual capital and capabilities, GPS is an intuitive and efficient platform used to quickly assess whether a client is "On Track" to achieving their financial goals.
Learn More about Goals Planning System (GPS)
Estate Planning Strategies
Estate planning is the process of making arrangements to pass down wealth and assets after a person's death. Proper estate planning gives careful consideration to your future plans, preferences and goals. We leverage LifeView's sophisticated estate planning strategies to guide this crucial conversation.
Estate Planning Essentials
Spending & Budgeting
Track spending habits, categorize expenses and create budgets across your Morgan Stanley and external financial accounts with our Spending and Budgeting Tool. We make it easy for us both to oversee trends in your financial life.
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Total Wealth View allows you and your advisor to view a complete financial picture of your investments to identify opportunities or risks across all your accounts. By linking your account information, you will benefit from more informed wealth planning, more secure data access, and convenient connectivity.
Learn How to Get StartedThe Horn Group
Explore the team that supports you at every step. Learn about our experience, key areas of focus, and our approach to providing personalized financial guidance.
Location
58 South Service Rd
Ste 400
Melville, NY 11747
US
Direct:
(631) 755-8946(631) 755-8946
Meet My Team
Rose M. Lochner
Portfolio Associate
Phone:
(631) 755-1667(631) 755-1667
About Jenn Monahan McDonald
Securities Agent: WA, WI, WV, AZ, CA, CO, CT, DC, DE, FL, GA, IL, IN, KY, MA, MD, ME, MI, NC, NH, NJ, NV, NY, OH, PA, RI, SC, TN, TX, VA, VT; General Securities Representative; Investment Advisor Representative
Awards and Recognition
Forbes Best-In-State Wealth Advisors
2024-2025 Forbes Best-In- State Wealth Advisors Source: Forbes.com (Awarded 2024-2025). Data compiled by SHOOK Research LLC based 12-month time period concluding in June of year prior to the issuance of the award.
The Power of Partnerships
By partnering with experienced individuals across wealth disciplines, Morgan Stanley Financial Advisors can align specialized resources with your custom needs and deliver strategic guidance through the familiarity and trust of existing relationships
David Janczyk
Associate Private Banker
About David Janczyk
David Janczyk is an Associate Private Banker serving Morgan Stanley Wealth Management offices in New York.
Associate Private Bankers partner with Private Bankers and Financial Advisors to develop a specialized approach for managing clients’ cash flow, liquidity and financing needs, leveraging our comprehensive suite of cash management and lending solutions.
David began his career in financial services in 2020 and joined Morgan Stanley in 2022 as a Client Services Associate. Prior to joining the firm, he was a Financial Advisor Associate at Equitable Advisors.
David is a graduate of Cortland University, where he received a Bachelor of Science in Sociology with dual minors in Management and Political Science. He lives in Babylon, New York with his family. Outside of the office, David enjoys visiting National Parks and has a deep passion for art. David also donates his time to local children’s charities.
Associate Private Bankers partner with Private Bankers and Financial Advisors to develop a specialized approach for managing clients’ cash flow, liquidity and financing needs, leveraging our comprehensive suite of cash management and lending solutions.
David began his career in financial services in 2020 and joined Morgan Stanley in 2022 as a Client Services Associate. Prior to joining the firm, he was a Financial Advisor Associate at Equitable Advisors.
David is a graduate of Cortland University, where he received a Bachelor of Science in Sociology with dual minors in Management and Political Science. He lives in Babylon, New York with his family. Outside of the office, David enjoys visiting National Parks and has a deep passion for art. David also donates his time to local children’s charities.
NMLS#: 2741184
Private Banking Group (PBG) Market Managers, Senior Private Bankers, Private Bankers, and Associate Private Bankers are employees of Morgan Stanley Private Bank, National Association.
Banking products and services are offered by Morgan Stanley Private Bank, National Association, Member FDIC.
Morgan Stanley Smith Barney LLC is a registered Broker/Dealer, Member SIPC, and not a bank. Where appropriate, Morgan Stanley Smith Barney LLC has entered into arrangements with banks and other third parties to assist in offering certain banking related products and services.
Investment, insurance and annuity products offered through Morgan Stanley Smith Barney LLC are: NOT FDIC INSURED | MAY LOSE VALUE | NOT BANK GUARANTEED | NOT A BANK DEPOSIT | NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY
Banking products and services are offered by Morgan Stanley Private Bank, National Association, Member FDIC.
Morgan Stanley Smith Barney LLC is a registered Broker/Dealer, Member SIPC, and not a bank. Where appropriate, Morgan Stanley Smith Barney LLC has entered into arrangements with banks and other third parties to assist in offering certain banking related products and services.
Investment, insurance and annuity products offered through Morgan Stanley Smith Barney LLC are: NOT FDIC INSURED | MAY LOSE VALUE | NOT BANK GUARANTEED | NOT A BANK DEPOSIT | NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY
Wealth Management
Global Investment Office
Portfolio Insights
Retirement
Working with you to understand your life goals and develop a personalized wealth strategy. Today and for the years to come.
- 401(k) Rollovers
- IRA Plans
- Retirement income strategies
- Retirement plan participants
- Annuities
A Simple Six-Step Retirement Checkup
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Investing
Working closely with you to guide your wealth and investments through the most challenging market cycles.
- Asset Management
- Wealth Planning
- Traditional Investments
- Alternative Investments
- Impact Investing
Rational Investing in an Age of Uncertainty
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Family
Creating customized financial strategies for the challenges that today’s families face.
- Estate Planning Strategies
- 529 Plans / Education Savings Planning
- Long Term Care Insurance
- Special Needs Planning
- Trust Services
529 Plans: A Powerful Tool to Save for Education
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Business Planning
Helping you on key aspects of your business such as ownership, liquidity and developing opportunities.
- Succession Planning
- Business Planning
- Qualified Retirement Plans
Financial Planning for Life After Selling a Business
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Philanthropy
Making sure your philanthropic dollars are managed with the same high quality service as the rest of your wealth.
- Endowments
- Foundations
- Donor Advised Funds
- Impact Investing
Ready to start a conversation? Contact Douglas Horn today.
1Morgan Stanley Wealth Management is the trade name of Morgan Stanley Smith Barney LLC, a registered broker-dealer in the United States. Morgan Stanley Wealth Management is a business of Morgan Stanley Smith Barney LLC.
For more information, please see the Morgan Stanley Smith Barney LLC Client Relationship Summary.
2Morgan Stanley’s investment advisory programs may require a minimum asset level and, depending on your specific investment objectives and financial position, may not be appropriate for you. Please see the Morgan Stanley Smith Barney LLC program disclosure brochure (the “Morgan Stanley ADV”) for more information in the investment advisory programs available. The Morgan Stanley ADV is available at www.morganstanley.com/ADV.
3Morgan Stanley offers a wide array of brokerage and advisory services to its clients, each of which may create a different type of relationship with different obligations to you. Please consult with your Financial Advisor to understand these differences or review our Understanding Your Brokerage and Investment Advisory Relationships brochure available at www.morganstanley.com/wealth-relationshipwithms/pdfs/understandingyourrelationship.pdf.
4When Morgan Stanley Smith Barney LLC, its affiliates and Morgan Stanley Financial Advisors and Private Wealth Advisors (collectively, “Morgan Stanley”) provide “investment advice” regarding a retirement or welfare benefit plan account, an individual retirement account or a Coverdell education savings account (“Retirement Account”), Morgan Stanley is a “fiduciary” as those terms are defined under the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), and/or the Internal Revenue Code of 1986 (the “Code”), as applicable. When Morgan Stanley provides investment education, takes orders on an unsolicited basis or otherwise does not provide “investment advice”, Morgan Stanley will not be considered a “fiduciary” under ERISA and/or the Code. For more information regarding Morgan Stanley’s role with respect to a Retirement Account, please visit www.morganstanley.com/disclosures/dol. Tax laws are complex and subject to change. Morgan Stanley does not provide tax or legal advice. Individuals are encouraged to consult their tax and legal advisors (a) before establishing a Retirement Account, and (b) regarding any potential tax, ERISA and related consequences of any investments or other transactions made with respect to a Retirement Account. Individuals should consult their tax advisor for matters involving taxation and tax planning and their attorney for matters involving trust and estate planning, charitable giving, philanthropic planning and other legal matters.
5Morgan Stanley Smith Barney LLC is a registered Broker/Dealer, Member SIPC, and not a bank. Where appropriate, Morgan Stanley Smith Barney LLC has entered into arrangements with banks and other third parties to assist in offering certain banking related products and services.
Investment, insurance and annuity products offered through Morgan Stanley Smith Barney LLC are: NOT FDIC INSURED | MAY LOSE VALUE | NOT BANK GUARANTEED | NOT A BANK DEPOSIT | NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY
Check the background of our Firm and Investment Professionals on FINRA's BrokerCheck*.
The information, products and services described here are intended only for individuals residing in states where this Financial Advisor is properly registered as described in this site.
Morgan Stanley reserves the right, to the extent permitted under applicable law, to retain and monitor all electronic communications. Morgan Stanley will not accept purchase or sale orders via any Internet site, social media site and/or its messaging systems. Morgan Stanley does not endorse and is not responsible and assumes no liability for content, products or services posted by third-parties on any Internet site, social media site and/or its messaging systems. All electronic communications are subject to terms available at the following link:
https://www.morganstanley.com/disclaimers/mswm-email.html. Any profiles and associated content are for U.S. residents only.
The securities/instruments, services, investments and investment strategies discussed in this material may not be appropriate for all investors. The appropriateness of a particular investment, investment strategy or service will depend on an investor's individual circumstances and objectives. Morgan Stanley Smith Barney LLC recommends that investors independently evaluate particular investments, strategies and services, and encourages investors to seek the advice of a Financial Advisor or Private Wealth Advisor. This material does not provide individually tailored investment advice. It has been prepared without regard to the individual financial circumstances and objectives of persons who receive it.
Morgan Stanley Smith Barney LLC (“Morgan Stanley”), its affiliates and Morgan Stanley Financial Advisors or Private Wealth Advisors do not provide tax or legal advice. Individuals should consult their tax advisor for matters involving taxation and tax planning and their attorney for legal matters.
Morgan Stanley Smith Barney LLC (“Morgan Stanley”) is not implying an affiliation, sponsorship, endorsement with/of the third party or that any monitoring is being done by Morgan Stanley of any information contained within the website. Morgan Stanley is not responsible for the information contained on the third-party website or the use of or inability to use such site. Nor do we guarantee their accuracy or completeness.
The views, opinions or advice contained within third party websites or materials are solely those of the author, who is not a Morgan Stanley employee, and do not necessarily reflect those of Morgan Stanley Smith Barney LLC, or its affiliates. The strategies and/or investments referenced may not be appropriate for all investors as the appropriateness of a particular investment or strategy will depend on an investor's individual circumstances and objectives.
*References to length of service at Morgan Stanley include years at Morgan Stanley and predecessor firms.
Certified Financial Planner Board of Standards Center for Financial Planning, Inc. owns and licenses the certification marks CFP®, CERTIFIED FINANCIAL PLANNER®, and CFP® (with plaque design) in the United States to Certified Financial Planner Board of Standards, Inc., which authorizes individuals who successfully complete the organization's initial and ongoing certification requirements to use the certification marks.
The use of the CDFA designation does not permit the rendering of legal advice by Morgan Stanley or its Financial Advisors which may only be done by a licensed attorney. The CDFA designation is not intended to imply that either Morgan Stanley or its Financial Advisors are acting as experts in this field.
Awards Disclosures | Morgan Stanley
For more information, please see the Morgan Stanley Smith Barney LLC Client Relationship Summary.
2Morgan Stanley’s investment advisory programs may require a minimum asset level and, depending on your specific investment objectives and financial position, may not be appropriate for you. Please see the Morgan Stanley Smith Barney LLC program disclosure brochure (the “Morgan Stanley ADV”) for more information in the investment advisory programs available. The Morgan Stanley ADV is available at www.morganstanley.com/ADV.
3Morgan Stanley offers a wide array of brokerage and advisory services to its clients, each of which may create a different type of relationship with different obligations to you. Please consult with your Financial Advisor to understand these differences or review our Understanding Your Brokerage and Investment Advisory Relationships brochure available at www.morganstanley.com/wealth-relationshipwithms/pdfs/understandingyourrelationship.pdf.
4When Morgan Stanley Smith Barney LLC, its affiliates and Morgan Stanley Financial Advisors and Private Wealth Advisors (collectively, “Morgan Stanley”) provide “investment advice” regarding a retirement or welfare benefit plan account, an individual retirement account or a Coverdell education savings account (“Retirement Account”), Morgan Stanley is a “fiduciary” as those terms are defined under the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), and/or the Internal Revenue Code of 1986 (the “Code”), as applicable. When Morgan Stanley provides investment education, takes orders on an unsolicited basis or otherwise does not provide “investment advice”, Morgan Stanley will not be considered a “fiduciary” under ERISA and/or the Code. For more information regarding Morgan Stanley’s role with respect to a Retirement Account, please visit www.morganstanley.com/disclosures/dol. Tax laws are complex and subject to change. Morgan Stanley does not provide tax or legal advice. Individuals are encouraged to consult their tax and legal advisors (a) before establishing a Retirement Account, and (b) regarding any potential tax, ERISA and related consequences of any investments or other transactions made with respect to a Retirement Account. Individuals should consult their tax advisor for matters involving taxation and tax planning and their attorney for matters involving trust and estate planning, charitable giving, philanthropic planning and other legal matters.
5Morgan Stanley Smith Barney LLC is a registered Broker/Dealer, Member SIPC, and not a bank. Where appropriate, Morgan Stanley Smith Barney LLC has entered into arrangements with banks and other third parties to assist in offering certain banking related products and services.
Investment, insurance and annuity products offered through Morgan Stanley Smith Barney LLC are: NOT FDIC INSURED | MAY LOSE VALUE | NOT BANK GUARANTEED | NOT A BANK DEPOSIT | NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY
Check the background of our Firm and Investment Professionals on FINRA's BrokerCheck*.
The information, products and services described here are intended only for individuals residing in states where this Financial Advisor is properly registered as described in this site.
Morgan Stanley reserves the right, to the extent permitted under applicable law, to retain and monitor all electronic communications. Morgan Stanley will not accept purchase or sale orders via any Internet site, social media site and/or its messaging systems. Morgan Stanley does not endorse and is not responsible and assumes no liability for content, products or services posted by third-parties on any Internet site, social media site and/or its messaging systems. All electronic communications are subject to terms available at the following link:
https://www.morganstanley.com/disclaimers/mswm-email.html. Any profiles and associated content are for U.S. residents only.
The securities/instruments, services, investments and investment strategies discussed in this material may not be appropriate for all investors. The appropriateness of a particular investment, investment strategy or service will depend on an investor's individual circumstances and objectives. Morgan Stanley Smith Barney LLC recommends that investors independently evaluate particular investments, strategies and services, and encourages investors to seek the advice of a Financial Advisor or Private Wealth Advisor. This material does not provide individually tailored investment advice. It has been prepared without regard to the individual financial circumstances and objectives of persons who receive it.
Morgan Stanley Smith Barney LLC (“Morgan Stanley”), its affiliates and Morgan Stanley Financial Advisors or Private Wealth Advisors do not provide tax or legal advice. Individuals should consult their tax advisor for matters involving taxation and tax planning and their attorney for legal matters.
Morgan Stanley Smith Barney LLC (“Morgan Stanley”) is not implying an affiliation, sponsorship, endorsement with/of the third party or that any monitoring is being done by Morgan Stanley of any information contained within the website. Morgan Stanley is not responsible for the information contained on the third-party website or the use of or inability to use such site. Nor do we guarantee their accuracy or completeness.
The views, opinions or advice contained within third party websites or materials are solely those of the author, who is not a Morgan Stanley employee, and do not necessarily reflect those of Morgan Stanley Smith Barney LLC, or its affiliates. The strategies and/or investments referenced may not be appropriate for all investors as the appropriateness of a particular investment or strategy will depend on an investor's individual circumstances and objectives.
*References to length of service at Morgan Stanley include years at Morgan Stanley and predecessor firms.
Certified Financial Planner Board of Standards Center for Financial Planning, Inc. owns and licenses the certification marks CFP®, CERTIFIED FINANCIAL PLANNER®, and CFP® (with plaque design) in the United States to Certified Financial Planner Board of Standards, Inc., which authorizes individuals who successfully complete the organization's initial and ongoing certification requirements to use the certification marks.
The use of the CDFA designation does not permit the rendering of legal advice by Morgan Stanley or its Financial Advisors which may only be done by a licensed attorney. The CDFA designation is not intended to imply that either Morgan Stanley or its Financial Advisors are acting as experts in this field.
Awards Disclosures | Morgan Stanley
CRC 4665150 (8/2025)
