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RIA / WealthAdvisordual registered (broker-dealer)19 years in industry

CHRISTOPHER ROBERT CALLAHAN

Advisor at MFS INSTITUTIONAL ADVISORS INC.

Westlake Village, CA | BOSTON, MA

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Search this name across graphsid dfx:ria:5bd26957-42b1-b57f-982b-cbfcddf797ac

Data as of Sep 14, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 8:10 PM UTC and rebuilt at most every 15 minutes.

Relationships: 4
Dated events: 1
On other graphs: 0
Observed: Sep 26, 2006 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: MFS INSTITUTIONAL ADVISORS INC.
Current firm class: other adviserderived
Book size: not publicno per-advisor AUM is published by the SEC, FINRA or IAPD, and DFX estimates none
Industry start: Sep 25, 2006earliest registration or exam on IAPD
Years in industry: 19derivedfrom the industry start date
Years at current firm: 1derivedfrom the current registration's begin date
Prior firms: 3
Current registrations: 1
Registered states: 1
Exams: S66
First exam: Sep 25, 2006
First registration: Sep 26, 2006
Dual registered: yes, broker-dealer
IAPD individual key: 5183237

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
MFS INSTITUTIONAL ADVISORS INC.	Other adviser	Jul 3, 2025	n/a	yes	Westlake Village, CA\|BOSTON, MA	Current employment
COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC	Asset manager	May 1, 2010	May 23, 2025	no	MINNEAPOLIS, MN\|ENCINO, CA\|BOSTON, MA\|Encino, CA\|Westlake Village, CA\|BOSTON, MA	Previous registration
BOFA ADVISORS, LLC	Former SEC adviser	Jan 24, 2007	May 1, 2010	no	BOSTON, MA	Previous registration
AMERIPRISE FINANCIAL SERVICES, LLC	National bd RIA	Sep 26, 2006	Dec 19, 2006	no	DENVER, CO	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
COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC	MFS INSTITUTIONAL ADVISORS INC.	May 23, 2025	Jul 3, 2025	41	Firm change	Other
BOFA ADVISORS, LLC	COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC	May 1, 2010	May 1, 2010	0	Bulk transfer	Other
AMERIPRISE FINANCIAL SERVICES, LLC	BOFA ADVISORS, LLC	Dec 19, 2006	Jan 24, 2007	36	Firm change	Other

Relationships

Registered with (4)

→ MFS INSTITUTIONAL ADVISORS INC.Registered adviserregistration: current employment
Jul 3, 2025 to presentfactForm ADV
→ COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLCRegistered adviserregistration: previous registration
May 1, 2010 to May 23, 2025factForm ADV
→ BOFA ADVISORS, LLCRegistered adviserregistration: previous registration
Jan 24, 2007 to May 1, 2010factForm ADV
→ AMERIPRISE FINANCIAL SERVICES, LLCRegistered adviserregistration: previous registration
Sep 26, 2006 to Dec 19, 2006factForm ADV

Dated events

Occurred
May 23, 2025
Advisor changed firm
Christopher Robert Callahan left Columbia Management Investment Advisers, Llc for Mfs Institutional Advisors Inc. (registered 2025-07-03)
Form ADVobserved 4 days ago