DS
CFP
DS
CFP

Donald Sienkiewicz

2 Years of Experience
Holden, MA
1 Disclosure

Donald Sienkiewicz is a CFP-designated registered investment advisor at J.R. Prunier Capital Management LLC, based in Holden, MA, with 2 years of industry experience. Donald operates on a fee-only basis, meaning they do not earn commissions from product sales. Their practice areas include Education Planning, High Net Worth, Investment Management, Retirement Planning, and 1 more. Their firm serves 135 clients with $410M in assets under management.

Compensation
Fee-Only (% of Portfolio)Fixed/Hourly
Firm Size
2 advisors
Number of Clients
135 clients
Average Client Portfolio
$3.0M average
Assets Under Management
$407.0M

Fee Structure

Minimum Investment:None
Planning is included in investment management (also available separately)
Portfolio-Based Fees (Tiered)
Portfolio ValueAnnual Fee
Up to $500K1.20%
$500K - $5.0M0.90%
$5.0M - $10.0M0.70%
$10.0M - $25.0M0.60%
$25M+0.50%

Fees are generally negotiable.

Fee Estimator
Your Portfolio Value
$500K
$0$500K$1M$5M$20M
Estimated Annual Fee
Loading...

Location

61 Boyden Rd., Suite 2, Holden, MA, 01520

Get directions

History

Regulatory History (1)
What are disclosures? Advisors must report customer complaints, regulatory actions, and certain legal or financial events to the SEC. Not all disclosures are serious—many are settled disputes or minor violations. Learn how to evaluate them.
Financial
July 2024
Final
Employment History
Current Registrations
J.R. Prunier Capital Management LLC
January 2026 - Present · 4 mos
Previous Registrations
Professional Advisory Services INC
June 2024 - July 2025 · 1 yr 1 mo
Advocates Financial LLC
October 2022 - December 2023 · 1 yr 2 mos
State Registrations2 states
MANH
Advisor

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.