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Summa Corp.

Updated today

Client assets under management

$439,450,743

Clients

73

48% high-net-worth

Advisors

2

of 2 employees

Firm type

Team

5-30 advisors or >$500M in AUM

Clients per advisor

37

Low

Average account size

$6,019,873

About

Summa provides investment management, supervisory services, portfolio consulting, and family office services to individuals (including high net worth clients), corporations, other investment advisers, and business entities. The firm offers both discretionary and non‑discretionary account management on a non‑wrap basis and may act as a sub‑advisor for certain client accounts.

Summa’s stated investment focus is long‑term capital preservation and achieving positive absolute returns, with portfolios tailored to each client’s objectives and constructed using fundamental analysis and diversification. The firm relies on external research, adjusts allocations to market conditions, and may allocate portions of client portfolios to hedge funds with established track records while noting their liquidity and transparency constraints.

Summa manages approximately $587.2 million in assets and maintains cross‑border relationships that support a notable non‑U.S. client base, including sub‑advisory arrangements with a Panamanian investment firm and a foreign solicitor agreement for international referrals. The brochure also discloses that Summa serves other investment advisers as clients and documents fixed‑fee international contracts, and it does not describe offering standalone financial planning services.

Client services

Portfolio management Selection of other advisers Investment advisory services

Expertise

Active portfolio management Private / alternative investments

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Fee options

Percentage

$0 - $2,000,000: 1.00% annually for Equity and Balanced accounts $0 - $2,000,000: 0.75% annually for Fixed Income accounts under $2 Million $2,000,000+: Negotiated annual percentage for accounts over $2 million

Other

Account minimum: $500,000 Fee-only: Fixed fee consulting arrangement payable quarterly in arrears; specific amounts not stated.

Main office location

Summa Corp.

25219 Kuykendahl Rd, Suite 260

Tomball TX 77375, United States

Number of offices

1

Most active in

Texas

Disclosures

Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.

Business activities & affiliations

Quick links

Advisors at this firm

user avatar

Rodrigo D

Series 63, Series 66

Tomball, TX

Summa Corp.

Rodrigo De La Garza is a financial advisor at Summa Corp. with 30 years of industry experience. He holds Series 63 and Series 66 licenses and has worked at firms including Investment Placement Group, Insight Securities Inc., and Laradorbecker Securities Corporation. Outside of his advisory role, he has a passive investment in Masters Destillers, LLC, a company involved in the production and marketing of Salvador Mezcal. Summa Corp. provides investment advice, supervisory services, portfolio consulting, and family office services to individuals, corporations, and other business entities. The firm focuses on long-term capital preservation and positive absolute returns through customized portfolios diversified across multiple asset classes, relying on fundamental analysis and external research.

Active portfolio management Private / alternative investments
user avatar

Maria B

Series 63

Tomball, TX

Summa Corp.

Maria Bernaldo De Quiros is a financial advisor at Summa Corp. with 36 years of industry experience. She holds a Series 63 designation and has worked at Insight Securities, Inc. and Urbanizadora del Bajío, S.A. de C.V. in prior roles. Outside of her advisory work, she serves as a sub-advisor for a Panamanian investment advisory firm. Summa Corp. provides investment advice, supervisory services, portfolio consulting, and family office services to individuals, corporations, and other business entities. The firm focuses on long-term capital preservation and seeks positive absolute returns through customized, diversified portfolios that include equities, fixed income, ETFs, structured notes, and selected hedge funds.

Active portfolio management Private / alternative investments
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