John Michael Ruby

Financial advisor at Mai Capital Management · Cleveland, OH

Last updated 2026-10-10

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John Michael Ruby is a financial advisor at Mai Capital Management in Cleveland, OH, CRD 4978055. Licenses and exams on the registration: Series 66. IAPD registration began 2005-07-14.

Registration

CRD number
4978055
Registration status
Active
IAPD registration
2005-07-14
Industry Experience
21 years
Work Experience
11 years
States registered
OH

Licenses and exams

  • Series 66

Designations

  • CFP®

Work history

  • 2015-08 to 2018-06 · Mercer Global Advisors Inc. · Columbus, OH
  • 2018-07 to 2018-09 · Mercer Global Advisors Inc. · Westerville, OH
  • 2019-01 to Present · Mai Capital Management, LLC · Cleveland, OH
  • 2018-10 to 2018-12 · Unemployed · Aurora, OH

Current employment

SEC IAPD record for John Michael Ruby

Mai Capital Management

Regulatory AUM
$52,101,252,111
Registered advisors
308
Offices
116
Clients per advisor
52.8 (Low)
Average AUM per client
$3.2M (Low)
High-net-worth client ratio
30.1% (Moderate)

Mai Capital Management: advisors, services and reported ETF investments

About

John Michael Ruby is a CFP® financial advisor at Mai Capital Management, LLC, operating as Mai Capital Management in Cleveland, OH. Reported securities licenses include Series 66. The latest record indicates 21 years of industry experience and 11 years of reported work history.

Mai Capital Management's firm-level Form ADV reports 308 advisors across 116 offices; approximately 52.8 clients per advisor, average assets per client of $3,204,062, and regulatory AUM of $52.1B; client categories including Individuals (non-HNW), High net worth individuals, Investment companies, Pooled investment vehicles, Pension and profit-sharing plans, and Charitable organizations; services including Financial Planning Services, Portfolio Management: Individuals and Small Businesses, Portfolio Management: Investment Companies, Portfolio Management: Pooled Investment Vehicles, and Portfolio Management: Businesses or Institutional Clients.

PortfolioFuture's firm-level 13F analysis covers $16.2B across 631 reported ETF positions for the 2026-06-30 reporting period. These are firm-level disclosures, not investments attributed to John Michael Ruby personally.

Reported ETF positions

Mai Capital Management reports 631 ETF positions worth $16.2B on Form 13F; the largest are listed.

Largest ETF positions reported by Mai Capital Management
FundReported value
IVV — iShares Core S&P 500 ETF$1.9B
SPY — SPDR S&P 500 ETF TRUST$893M
GLDM — SPDR Gold MiniShares Trust$595.4M
VEA — Vanguard FTSE Developed Markets ETF$502.2M
VTI — Vanguard Morningstar Total Stock Market ETF$438M

Source: SEC Form 13F. These are institution-level reported positions; they do not establish that any individual advisor or their clients hold a fund.

What this firm offers

Filed by Mai Capital Management on Form ADV.

Client services

  • Financial Planning Services
  • Individuals and Small Businesses
  • Investment Companies
  • Pooled Investment Vehicles
  • Businesses or Institutional Clients
  • Pension Consulting Services
  • Selection of Other Advisers
  • Other Advisory Service

Fee options

  • Percentage of Assets Under Management
  • Hourly Charges
  • Fixed Fees (Other Than Subscription)
  • Performance-Based Fees
  • Other

Business and affiliations

  • Trust Company
  • Engaged in Other Business
  • Sells Non-Advisory Products or Services
  • Insurance Company or Agency
  • Sponsor or GP of Pooled Investment Vehicl
  • Adviser to Any Private Fund

Location

6050 Oak Tree Blvd, Cleveland, OH 44131

68 advisors at this office.

Mai Capital Management office in Cleveland, OH

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Contact

The firm's filed contact details.

Official record

View the official SEC IAPD record

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