MR
MR

Mark Rathjen

26 Years of Experience
Melville, NY
Broker

Mark Rathjen is a registered investment advisor at LPL Financial LLC, based in Melville, NY, with 26 years of industry experience. Their practice areas include Investment Management. Their firm serves 1,676,192 clients with $620B in assets under management.

Compensation
Commission-BasedFee-Only (% of Portfolio)Fixed/Hourly
Firm Size
27420 advisors
Number of Clients
1,676,192 clients
Average Client Portfolio
$369K average
Assets Under Management
$618.9B

Fee Structure

Minimum Investment:$1K
Investment management only (planning not offered)

LPL Financial, along with your advisor, charges an annual fee based on the value of your account. This fee covers asset management, administrative, and custodial services. The fee is negotiable, but the maximum is 2.50% per year, paid quarterly in advance. LPL may share a portion of this fee with your advisor.

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Location

445 Broadhollow Rd Ste Cl-43, Melville, NY, 11747

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History

Regulatory History
Clean regulatory record

No disclosures, customer disputes, or regulatory actions on file.

Disclosures include customer complaints, regulatory actions, and other events that advisors must report to the SEC. A clean record means none have been reported.

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Other Business Activities

Mark operates his LPL business through Prospect Financial Services LLC and provides investment advisory services through the same firm. He also owns rental real estate, Next Gen Tests, and MSR Asset Management, dedicating minimal time to the latter two.

Employment History
Current Registrations
LPL Financial LLC
November 2025 - Present · 6 mos
Prospect Financial Services LLC
February 2023 - Present · 3 yrs 3 mos
LPL Financial LLCBroker
February 2023 - Present · 3 yrs 3 mos
Previous Registrations
Roberts & Ryan Investments INC.Broker
March 2021 - March 2023 · 2 yrs
LPL Financial LLCBroker
November 2017 - April 2019 · 1 yr 5 mos
Btig, LLCBroker
January 2015 - November 2015 · 10 mos
Leerink Partners LLCBroker
May 2005 - January 2015 · 9 yrs 8 mos
Goldman, Sachs & CO.Broker
September 2002 - March 2005 · 2 yrs 6 mos
Spear, Leeds & Kellogg, L.P.Broker
October 1995 - September 2002 · 6 yrs 11 mos
Ernst & CompanyBroker
May 1995 - September 1995 · 4 mos
State Registrations3 states
FLNJNY
AdvisorBrokerBoth

You can work with an advisor not registered in your state. Most advisors can legally serve a small number of clients across state lines without registering.

Exams
No exam information available for this advisor.