Experience

Makes all the difference

We are here to provide quality strategies customized to your needs–and to be your primary source of financial advice. We concentrate on developing long-term relationships through a commitment to quality client service. You can rely on our personalized advice, first-class solutions, and extensive wealth management experience.

Xavier A. Aguayo, CPWA, CEPA

Senior Vice President–Wealth Management

Financial Advisor

I work with affluent individuals, families, and corporate executives to help them navigate complex financial decisions and pursue their long-term goals with confidence. My team and I provide comprehensive wealth planning and personalized guidance designed to align investments, retirement planning, and legacy objectives into a coordinated strategy.

With nearly three decades of experience in wealth management and more than 20 years at UBS, I am committed to helping clients make informed decisions through education, collaboration, and trusted advice. In 2018, I earned the Certified Private Wealth Advisor® (CPWA®) designation, and in 2026, I was honored to be named to the Forbes Best-In-State Wealth Advisors list for the U.S. Territories.

Registered States:
  • CA
  • DC
  • FL
  • IL
  • MA
  • MI
  • NC
  • NY
  • PA
  • PR
  • VA
  • VI
  • VT

Recognized as an industry leader:

  • Forbes Best-in-State Wealth Advisors, 2026The Forbes rating is compiled by Shook Research and awarded annually in April based on information from a 12 month period ending June of the prior year.

Eligibility is based on quantitative factors and is not necessarily related to the quality of the investment advice. For more information on third party rating methodologies, please visit ubs.com/us/en/designation-disclosures

250 Munoz Rivera Avenue
A.I Plaza, PH Floor
San Juan, PR 00918

Email Me

xavier.aguayo@ubs.com
Xavier A. Aguayo, CPWA, CEPA
250 Munoz Rivera Avenue,San Juan,PR,00918

William J. Serralles

Senior Vice President–Wealth Management

Financial Advisor

William works with successful individuals, families and corporations to develop integrated planning strategies focused on their financial well-being. He is particularly skillful in building strong client relationships and communicating complex financial concepts clearly. William’s background in equities and his experience working on Wall Street have enhanced his knowledge of risk management and, as a Corporate Stock Benefits Consultant, he offers an informed perspective and recommendations to executives regarding compensation issues.

William has more than 30 years of wealth management experience and joined UBS in 1998. He is a FINRA-Registered General Securities Representative and holds the FINRA Series 7, 63 and 65 licenses, as well as life insurance and variable annuity licenses. William earned a B.A. in finance and economics from the Catholic University of America in Washington, D.C.

William’s top priority in life is spending time with his family. His passion and what he would call a “serious hobby” is music and music production. William and his wife are very conscious about the social issues that abound in Puerto Rico and believe the best way they can make a difference is by contributing to children’s education, health and empowerment initiatives, because children hold the key to the future.

Registered States:
  • CA
  • FL
  • IL
  • MA
  • MI
  • NC
  • NJ
  • NY
  • PA
  • PR
  • VA
  • VI
  • VT

Recognized as an industry leader:

  • UBS Wealth Management Director’s Council, 2025UBS Financial Services Inc. Councils are a distinction held by UBS Financial Advisors based on criteria including evaluation of compliance with firm rules, standards & policies and revenue. Council membership is not representative of any one client's experience and is not indicative of the advisor’s future performance.

Eligibility is based on quantitative factors and is not necessarily related to the quality of the investment advice. For more information on third party rating methodologies, please visit ubs.com/us/en/designation-disclosures

250 Munoz Rivera Avenue
A.I Plaza, 16th Floor
San Juan, PR 00918

Email Me

william.serralles@ubs.com
William J. Serralles
250 Munoz Rivera Avenue,San Juan,PR,00918

Eduardo E. Cabán, CIMA

Senior Vice President–Wealth Management

Private Wealth Advisor

Eduardo brings a consultative approach to learning about his clients’ needs and developing financial plans and portfolio strategies to support them. Prior to becoming a Financial Advisor, he was a key member of the UBS Consulting Division, serving institutional and individual ultra-high-net-worth clients with portfolio construction and asset management requirements.

Eduardo has more than 20 years of wealth management experience and joined UBS in 2007. He is a FINRA-Registered General Securities Representative and holds the FINRA Series 7, 63, 65 and 24 licenses, as well as life insurance and variable annuity licenses. Eduardo has earned the Certified Investment Management Analyst designation, and, within the firm, he has achieved the Private Wealth Advisor designation offered at UBS. Eduardo graduated from the University of Puerto Rico with a B.A. in finance.

In his personal time, Eduardo’s priority is spending time with his family, including his two young boys. He also loves to explore the culinary side of life and cook with friends and family. In addition, Eduardo is an active member of the Alumni Association of his school as he believes education is the backbone of a society.

Registered States:
  • CA
  • FL
  • IL
  • MA
  • MI
  • NC
  • NY
  • PA
  • PR
  • VA
  • VI
  • VT

Credentials

  • Private Wealth Advisor
  • Certified Investment Management Analyst
250 Munoz Rivera Avenue
A.I Plaza, 16th Floor
San Juan, PR 00918

Email Me

eduardo.caban@ubs.com
Eduardo E. Cabán, CIMA
250 Munoz Rivera Avenue,San Juan,PR,00918

Alanna Maldonado

Client Associate

250 Munoz Rivera Avenue
A.I Plaza, 16th Floor
San Juan, PR 00918

Email Me

alanna.maldonado@ubs.com
Alanna Maldonado
250 Munoz Rivera Avenue,San Juan,PR,00918

Lissette Diaz

Authorized Officer

Senior Wealth Strategy Associate

Registered States:
  • CA
  • FL
  • IL
  • MA
  • MI
  • NC
  • NY
  • PA
  • PR
  • TN
  • VA
  • VI
  • VT
250 Munoz Rivera Avenue
A.I Plaza, 16th Floor
San Juan, PR 00918

Email Me

lissette.diaz@ubs.com
Lissette Diaz
250 Munoz Rivera Avenue,San Juan,PR,00918

Olga Carbia

Client Associate

250 Munoz Rivera Avenue
A.I Plaza, 16th Floor
San Juan, PR 00918

Email Me

olga.carbia@ubs.com
Olga Carbia
250 Munoz Rivera Avenue,San Juan,PR,00918

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