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RIA / WealthAdvisorCertified Financial Plannerdual registered (broker-dealer)28 years in industry

Michael Francis Middendorf

Advisor at CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC.

Houston, TX | Montgomery, TX

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Search this name across graphsid dfx:ria:fcc145df-3a9f-cb2a-4841-bcc0722ac421

Data as of Sep 14, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 3:29 AM UTC and rebuilt at most every 15 minutes.

Relationships: 5
Dated events: 1
On other graphs: 0
Observed: Jun 30, 2003 to Sep 14, 2026

Across DFX

This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Current firm: CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC.
Current firm class: broker-dealer affiliated wealth managerderived
Book size: not publicno per-advisor AUM is published by the SEC, FINRA or IAPD, and DFX estimates none
Industry start: Nov 17, 1997earliest registration or exam on IAPD
Years in industry: 28derivedfrom the industry start date
Years at current firm: 1derivedfrom the current registration's begin date
Prior firms: 4
Current registrations: 1
Registered states: 1
Designations: Certified Financial Planner
Exams: S66|S63
First exam: Nov 17, 1997
First registration: Jun 30, 2003
Dual registered: yes, broker-dealer
Other names: MIKE MIDDENDORF
IAPD individual key: 2969928

Registration history

registration spans on IAPD; the basis says whether the span is a current registration or a prior employment record

Firm	Class	Began	Ended	Current	Branch	Basis
CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC.	Bd affiliated wealth	Jul 2, 2025	n/a	yes	Houston, TX\|Montgomery, TX	Current employment
ALPHA CUBED INVESTMENTS, LLC	Former SEC adviser	Oct 15, 2014	Jul 2, 2025	no	MONTGOMERY, TX\|COSTA MESA, CA	Previous registration
AMERIPRISE FINANCIAL SERVICES, LLC	National bd RIA	Feb 8, 2013	Oct 23, 2014	no	THE WOODLANDS, TX	Previous registration
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED	Wirehouse	Aug 1, 2006	Feb 15, 2013	no	HOUSTON, TX	Previous registration
TD AMERITRADE, INC.	Former SEC adviser	Jun 30, 2003	Feb 1, 2006	no	HOUSTON, TX	Previous registration

Moves

a move is two registration dates; a bulk corporate re-registration is typed BULK_TRANSFER and is not a move

From	To	Left	Joined	Gap, days	Kind	Move type
ALPHA CUBED INVESTMENTS, LLC	CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC.	Jul 2, 2025	Jul 2, 2025	0	Firm change	RIA to ibd
AMERIPRISE FINANCIAL SERVICES, LLC	ALPHA CUBED INVESTMENTS, LLC	Oct 23, 2014	Oct 15, 2014	-8	Firm change	Other
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED	AMERIPRISE FINANCIAL SERVICES, LLC	Feb 15, 2013	Feb 8, 2013	-7	Firm change	Wirehouse to ibd
TD AMERITRADE, INC.	MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED	Feb 1, 2006	Aug 1, 2006	181	Firm change	Other

Relationships

Registered with (5)

→ CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC.Registered adviserregistration: current employment
Jul 2, 2025 to presentfactForm ADV
→ ALPHA CUBED INVESTMENTS, LLCRegistered adviserregistration: previous registration
Oct 15, 2014 to Jul 2, 2025factForm ADV
→ AMERIPRISE FINANCIAL SERVICES, LLCRegistered adviserregistration: previous registration
Feb 8, 2013 to Oct 23, 2014factForm ADV
→ MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATEDRegistered adviserregistration: previous registration
Aug 1, 2006 to Feb 15, 2013factForm ADV
→ TD AMERITRADE, INC.Registered adviserregistration: previous registration
Jun 30, 2003 to Feb 1, 2006factForm ADV

Dated events

Occurred
Jul 2, 2025
Advisor changed firm
Michael Francis Middendorf left Alpha Cubed Investments, Llc for Cambridge Investment Research Advisors, Inc. (registered 2025-07-02)
Form ADVobserved 4 days ago