Mark James Dennis

CRD 4238686 · Dimensional Fund Advisors LP · Austin, TX

IA RegisteredBroker

Registration & licensing

As recorded in SEC IAPD / FINRA BrokerCheck

Broker-dealer registration: Active
Investment adviser registration: Active
Exams passed (6): Series 65Series 63Series 24SIESeries 31Series 7
Registered states (50): Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · District Of Columbia · Florida · Georgia · Idaho · Illinois · Indiana · Iowa · Kansas · Kentucky · Louisiana · Maine · Maryland · Massachusetts · Michigan · Minnesota · Mississippi · Missouri · Montana · Nebraska · Nevada · New Hampshire · New Jersey · New Mexico · New York · North Carolina · North Dakota · Ohio · Oklahoma · Oregon · Pennsylvania · Rhode Island · South Carolina · South Dakota · Tennessee · Texas · Utah · Vermont · Virginia · Washington · West Virginia · Wisconsin · Wyoming
Years in the industry (source record): 26
Professional designations: Not yet retrieved from the source record

Disclosures

Copied from the official record

No disclosure events are flagged in the source record as of Aug 20, 2026.

This reflects our copy of the record on that date only. Confirm the current position on FINRA BrokerCheck ↗ or SEC IAPD ↗.

Current firm

From the firm record

Firm: Dimensional Fund Advisors LP
Firm CRD: 106482
SEC number: 801-16283
Assets under management: $1.0T as of Mar 24, 2026
Website: www.dimensional.com/us-en/individual ↗
Phone: 512-306-7400
Firm location: Austin, TX, 78746

Employment history (11)

From the source registration record · current first

Dimensional Fund Advisors LPCurrent
Austin, TX · IA capacity

Jul 12, 2011 → present
Dfa Securities LLCCurrent
Austin, TX · BD capacity

May 26, 2011 → present
Morgan Stanley & Co. Incorporated
BD capacity

Jul 12, 2007 → Apr 13, 2011
Morgan Stanley & Co. Incorporated
IA capacity

Jul 13, 2007 → Dec 31, 2010
Goldman, Sachs & Co.
BD capacity

Jul 1, 2005 → Jun 19, 2007
Deutsche Investment Management Americas Inc.
IA capacity

Jul 17, 2003 → Jun 15, 2005
Scudder Distributors, Inc.
BD capacity

Jul 10, 2003 → Jun 15, 2005
Morgan Stanley
IA capacity

Aug 22, 2001 → May 19, 2003
Morgan Stanley Dw Inc.
BD capacity

May 21, 2001 → May 19, 2003
Bear, Stearns & Co. Inc.
BD capacity

Jan 30, 2001 → Apr 25, 2001
Charles Schwab & Co., Inc.
BD capacity

Oct 19, 2000 → Jan 23, 2001

Source & corrections

Where this page comes from

Advisor registration data on this site is reproduced from the SEC's Investment Adviser Public Disclosure (IAPD) system and FINRA's BrokerCheck. Those systems are the official records; this site is not. We do not alter the factual content of the records we reproduce.

SEC IAPD record for CRD 4238686 ↗ FINRA BrokerCheck record for CRD 4238686 ↗ BrokerCheck Terms of Use ↗ Report a data error on this page →

Data compiled Aug 20, 2026. Source: IAPD_SEARCH. Your use of BrokerCheck data reproduced here is subject to FINRA's Terms of Use.

Preview release — partial coverage. This is a public-records lookup tool, not investment advice, not a recommendation, and not an endorsement of any advisor. Registration status shown here is a copy of a government record and may be out of date; always confirm against SEC IAPD and FINRA BrokerCheck before acting.