Alexander Harrington
Investment Adviser Representative at Fidelity Institutional Wealth Adviser LLC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Alexander Harrington is an investment adviser representative with Fidelity Institutional Wealth Adviser LLC in Jamaica Plain, MA, where they have been registered since 2022. They have worked in the securities industry since 2016 and were previously registered with Ladenburg Thalmann Asset Management Inc. They have passed 3 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent) and Series 7 (general securities representative). They are registered to provide investment advice in Massachusetts, Rhode Island, and Texas.
Office
Advisors at this office: 7
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- Massachusetts, Rhode Island, Texas
- Broker:
53 states and territories
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, 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, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming
Registration requirements vary by state and service. Contact the advisor's firm to confirm whether they can serve you.
Financial-firm registration history
Registration history as reported to FINRA, most recent first.
Reported employment history
Employment the advisor reported on their SEC/FINRA filings, as of October 8, 2026. It may not be a complete history.
- Ladenburg ThalmannDec 2015 – Apr 2022New York, NY
- Fidelity InvestmentsApr 2022 – no end date reportedSmithfield, RI
Official records & sources
Data as of June 26, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About Fidelity Institutional Wealth Adviser LLC
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- Fixed fee
Arrangements the firm reports on its Form ADV; this advisor may not charge every fee listed. Estimated from the firm's Form ADV — individual terms may differ. Not a quote.
Services the firm offers
Client types the firm serves
Firm assets under management
$5B–$25B
- Firm disclosures (Form ADV)
- No disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 40
- Offices listed on AdvisorFinder:
- 11
- Main office:
- Boston, MA
- SEC file number:
- 801-116860
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of March 30, 2026
View full firm profileOther advisors at Fidelity Institutional Wealth Adviser LLC
Showing 12 of 40 in the directory
Similar advisors in Boston, MA
Other advisors whose filed branch office is in the same city.
This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. Alexander Harrington has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on BrokerCheck or SEC.gov before making any decision. AdvisorFinder may be compensated for referrals generated through this page.
BrokerCheck data is used subject to the FINRA BrokerCheck Terms of Use. Found something inaccurate? Report inaccurate data and we will correct any error we introduced. Errors in the underlying BrokerCheck record itself are referred to FINRA, which maintains that record.
Find the right advisor for you
Take the free 3-minute assessment to get matched with advisors who fit your goals.
Get Matched