Role at Charles Schwab Investment Management
- Title on Schedule A
- Chief Investment Officer
- Control
- William Mcmahon is a control person of Charles Schwab Investment Management.
- Ownership
- An individual ownership band is not available in the source record.
- Tenure
- William Mcmahon has held the filed role since January 2020.
The firm
Form ADV filed 30 March 2026
Career on record
William Mcmahon has been registered through Charles Schwab Investment Management since July 2022, and before that through Wellesley Investment Partners, LLC and Thomaspartners, Inc..
- – present · 4 yearsBoston, MA · Adviser representative · Firm CRD 106753
- Charles Schwab Investment Advisory, Inc– · 4 yearsBoston, MA · Adviser representative · Firm CRD 151739
- Wellesley Investment Partners, LLC– · 2 yearsWellesley, MA · Adviser representative · Firm CRD 144984
- Thomaspartners, Inc.– · 17 yearsBoston, MA · Adviser representative · Firm CRD 104966
- Passed Series 66 and Series 7 · 1999
Registrations and exams
William Mcmahon has a current investment-adviser registration in Massachusetts and has passed 2 qualifying exams.
| State | Scope | Status | Since |
|---|---|---|---|
| Massachusetts | Investment adviser representative | Approved | 6 July 2022 |
- Scope
- Investment adviser representative
- Status
- Approved
Examinations
| Exam | Name | Passed |
|---|---|---|
| Series 66 | Uniform Combined State Law Examination | 17 June 1999 |
| Series 7 | General Securities Representative Examination | 22 September 1999 |
- Name
- Uniform Combined State Law Examination
- Name
- General Securities Representative Examination
Individual record
- Full name
- William Patrick Mcmahon
- CRD
- 4280588
- Registration status
- Investment adviser registration
- Office
- One International Place, Boston, MA 02110
This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. Check this record on adviserinfo.sec.gov
Common questions
Where does William Mcmahon work?
William Mcmahon has been Chief Investment Officer of Charles Schwab Investment Management, Inc since January 2020, and is a control person of the firm.
Is William Mcmahon a financial advisor?
Yes. William Mcmahon has a current investment-adviser registration in Massachusetts, through Charles Schwab Investment Management since July 2022, as of 17 October 2026.
How many years of experience does William Mcmahon have?
William Mcmahon has worked in the financial industry for 25 years as of 17 October 2026, counted from 6 July 2001, across 4 adviser firms.
What exams has William Mcmahon passed?
William Mcmahon has passed 2 licensing exams: the Series 66 and Series 7. The earliest, the Series 66, was passed in June 1999.
Where did William Mcmahon work before Charles Schwab Investment Management?
Before Charles Schwab Investment Management, William Mcmahon was registered through Wellesley Investment Partners, LLC, October 2007 to December 2009; Thomaspartners, Inc., July 2001 to March 2018.
Where is William Mcmahon based?
William Mcmahon’s registered office is in Boston, MA.
Leadership at Charles Schwab Investment Management
- Omar Aguilar ChavezDirector, Chief Executive Officer, President and Chief Investment Officer
- Jessica SeidlitzChief Financial Officer and Chief Operating Officer
- Mark HunterChief Compliance Officer
- Patrick CassidyChief Investment Officer
- Catherine MacgregorChief Legal Officer
- Michael Daniel VerdeschiDirector
- Richard WursterDirector