Preston Investments logo

Preston Investments

Updated today

Client AUM

$196,422,412

Clients

2,526

Advisors

4

of 5 employees

About

Preston Advisory Services LLC provides discretionary portfolio management to individuals — including high‑net‑worth clients — and to pension and profit‑sharing plans. The firm manages approximately $197.7 million across about 2,526 client accounts and primarily advises on exchange‑traded funds and mutual funds, including the use of firm‑developed model portfolios.

The firm tailors strategies based on each client’s investment objectives and risk tolerance, implements ongoing monitoring and rebalancing, and commonly requires discretionary trading authority to execute those strategies. Model portfolios are offered across risk profiles, and the brochure discloses that Interactive Brokers and Charles Schwab (among others) serve as custodians and trade execution venues for client accounts.

Preston is notable for operating with a very high client load per advisor — more than 600 clients per advisor — a ratio that is uncommon among peers and implies a higher service volume for each advisor. The brochure also discloses that several supervised persons are separately licensed as insurance agents and may receive commission‑based compensation for insurance sales, and that the firm routinely directs brokerage to particular custodians in connection with institutional services, both of which are identified as potential conflicts of interest.

Client services

Portfolio management Selection of other advisers

Expertise

Passive / index investing

Want help finding the right advisor?

Answer a few questions to see advisors matched to you.

Fee options

Percentage

0.50% annually

Commissions

Commission-based compensation earned by persons licensed as independent insurance agents for selling insurance products, separate and distinct from advisory fees.

Main office

4345 Stockton Hill Rd

Kingman AZ 86409

Advisors at this office

4

Most active in

Arizona · Arkansas · California · Colorado · Florida · Georgia · Idaho · Illinois · Indiana · Iowa · Kansas · Michigan · Minnesota · Nevada · New Mexico · Ohio · Oklahoma · Oregon · South Carolina · Tennessee · Texas · Utah · Washington

Also doing business as

Preston Advisory Services LLC · Preston Advisory Services, LLC · Preston Investments

Disclosures

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

Business activities & affiliations

Advisors at this firm

user avatar

Anthony C

Series 65

Kingman, AZ

Preston Investments

Anthony Castillo is a financial advisor at Preston Investments in Kingman, AZ, holding a Series 65 designation with one year of industry experience. Prior to joining Preston Investments, he has been involved with AC & Sons Custom Heating & Cooling since 2011. Preston Advisory Services LLC provides discretionary portfolio management to individuals, including high-net-worth clients, as well as pension and profit-sharing plans. The firm manages nearly $198 million across more than 2,500 accounts, focusing on exchange-traded funds, mutual funds, and firm-developed model portfolios tailored to client investment objectives and risk tolerance.

Passive / index investing
user avatar

Shay S

Series 65

Kingman, AZ

Preston Investments

Shay Stiers is a financial advisor at Preston Investments with a Series 65 designation and four years of industry experience. Prior to joining Preston Investments in 2020, Stiers held various positions including roles at Walmart and Kenai Peninsula Community College. Preston Advisory Services provides discretionary portfolio management and investment advice primarily to individuals, including high-net-worth clients, as well as pension and profit-sharing plans. The firm uses a combination of fundamental analysis and trading strategies, offering tailored portfolio management and model portfolios through custodians such as Charles Schwab and Interactive Brokers.

Passive / index investing
user avatar

Kelly S

Series 65

Kingman, AZ

Preston Investments

Kelly Shuffler is a financial advisor at Preston Investments with four years of industry experience. She holds a Series 65 designation and previously worked at Aspire Medical Centers and Cerbat Chiropractic. Preston Advisory Services provides discretionary portfolio management and investment advice primarily to individuals, including high-net-worth clients, as well as pension and profit-sharing plans. The firm offers tailored portfolio management, model portfolios, and guidance on ETFs and mutual funds, managing client accounts on a discretionary basis with a combination of fundamental analysis and both long- and short-term trading strategies.

Passive / index investing
user avatar

Scott P

Series 63, Series 65

Kingman, AZ

Preston Investments

Scott Preston is the principal of Preston Investments with 27 years of industry experience. He holds Series 63 and Series 65 licenses and has worked at Preston Investments since 1998 and at Cetera Advisors LLC from 2013 to 2018. Outside of advisory services, he is a 50% owner of Preston Investments, which also engages in estate planning and fixed insurance. Preston Advisory Services provides discretionary portfolio management and investment advice primarily to individuals, including high-net-worth clients, as well as pension and profit-sharing plans. The firm employs a combination of fundamental analysis and both long- and short-term trading strategies, offering tailored portfolio management and model portfolios through custodians such as Charles Schwab and Interactive Brokers.

Passive / index investing
View complete list of advisors at this firm
Warmer team member

Not sure where to start?

We'll help you think it through—whether you ultimately need an advisor or not. Warmer helps you compare advisors clearly, so you can choose with confidence.

Find your advisor

For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Advisors are independent and may not have reviewed or updated this information. Please review an advisor’s Form ADV and do your own diligence before deciding whether to work with them.

Advisor matching and introductions are provided by FinanceHQ LLC (“FHQ”), a wholly-owned subsidiary of Warmer and an SEC-registered investment advisor. We receive compensation from certain participating advisors for introductions or referrals. This creates a conflict of interest because we have an incentive to recommend advisors who compensate us, including those who pay us more. You pay no fee to use our matching service, and advisor fees are not increased because of a referral or introduction. We do not review the ongoing performance of advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.

By using our service, you agree to our Terms of Service and Advisory Agreement, and acknowledge our Privacy Policy. Please review FHQ’s ADV Part 2A and Form CRS. Logos provided by Logo.dev

© 2026 Warmer Holdings Inc. (“Warmer”)