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Mason Garret Poretsky

INTERACTIVE BROKERS
GREENWICH, CT
·CRD# 8036595·1 year experience

Professional Summary

Mason Garret Poretsky is a registered financial advisor currently at INTERACTIVE BROKERS LLC located in Greenwich, Connecticut. Mason is registered as a RR (Registered Representative) and started their career in finance in 2026. Mason has worked at 1 firm and has passed the Series 99TO and SIE exams.

At a Glance

Best-Interest Standard

Fiduciary Standard

Fee Structure

Account Minimum

Active Clients

Fiduciary Standard

Fee Structure

Account Minimum

Active Clients

Other Aliases

There are no additional aliases reported.

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Contact Information

This advisor has not claimed their profile yet, so there is no contact information to display at this time.

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Disclosures are events reported to regulators, such as customer disputes, regulatory actions, employment separations, or financial events. Some are resolved, denied, or contested — a disclosure is not a verdict. We recommend asking an advisor directly about any disclosure on their record.

Disclosures on record.

Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities. Check for any disclosures as part of your thorough research when choosing an advisor.

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Years of Experience

1 years in the financial services industry

Current & Past Employments

INTERACTIVE BROKERS LLC·CRD# 36418
BD
Pickwick Plaza, Greenwich, CT 06830
May 1, 2026 - Present

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Current Firm

IB
INTERACTIVE BROKERS LLC

INTERACTIVE BROKERS LLC

CRD#: 36418 / SEC#: 8-47257
BD
Broker-Dealer Firm Regulated by FINRA (Boston district office)

Contact Information

Main Address

Pickwick Plaza, Greenwich, CT 06830

Mailing Address

One Pickwick Plaza, Greenwich, CT 06830

Phone Number

(203) 618-5710

Established

Connecticut since 03/09/1998

Firm Type

Limited Liability Company

Fiscal Year End

December

Firm Size

Medium

FINRA licenses (53 States and Territories)

Registered to provide investment advisory services in 0 US states and territories.

Documents

Customer Relationship Summary (CRS / FINRA)

Direct owners and executive officers

NamePositionCRD#
IBG LLCMANAGING MEMBER—
BRODY, PAUL JONATHANSECRETARY, PRINCIPAL OPERATIONS OFFICER1722066
CHAIT, JONATHANEXECUTIVE VICE PRESIDENT, COO4582696
FRIEDLAND, DAVID ERICMANAGING DIRECTOR-ASIAN OPERATIONS2715164
GALIK, MILANCHIEF EXECUTIVE OFFICER2204066
GELMAN, JONATHAN MICHAELCHIEF COMPLIANCE OFFICER5440103
MANDELBAUM, ELAINEGENERAL COUNSEL2957713
MENICUCCI, JAMESPRINCIPAL FINANCIAL OFFICER6590173
SHAO-CHEN, KENGNINGTREASURER5910386

Disclosures

Regulatory Event

92

Arbitration

28

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Other business activities

Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.

The advisor shows no other business activity.

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State Registrations and Notice Filings

Listed states reflect where the advisor is authorized to serve clients under state regulations.
This advisor is not registered in any state.

Exams

Financial professionals may take different exams throughout their careers based on the types of services they provide and roles they perform.

Series 99TO — Operations Professional Examination

Passed May 2026About the Series 99TO exam

SIE — Securities Industry Essentials Examination

Passed Sep 2025About the SIE exam
FINRA
SRO Registrations

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CRS (Client Relationship Summary) - BD

Click below to view Mason Garret Poretsky's CRS (Customer Relationship Summary).

CRS (Customer Relationship Summary)

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