Stembrook Asset Management, LLC
Data sourced from SEC public records (and other sources when available). Refreshed weekly • Updated today.
Client AUMClient assets under management
$147,337,517
Clients
36
Advisors
2
across 2 offices
About
Stembrook Asset Management is an SEC-registered investment adviser that serves individuals (including high‑net‑worth clients), trusts, estates, charitable organizations, and business entities. The firm provides discretionary portfolio management, selection of third‑party advisers, and modular financial planning and consulting, managing roughly $147.5 million for about 36 clients.
The firm’s investment process draws on fundamental, technical, and cyclical analysis and can incorporate both long‑ and short‑term trades, option transactions, and the use of sub‑advisers or third‑party managers, with continuous supervision and rebalancing under discretionary authority. Stembrook discloses that it may employ derivatives—specifically options and related instruments—within separately managed accounts and may advise on or invest in digital assets, each of which involves specialized risk and custody considerations.
Distinctive operational features include the firm’s use of third‑party platforms to directly manage held‑away retirement and education accounts and its policy of instructing custodians to forward proxy materials to clients rather than voting proxies on their behalf. Stembrook also emphasizes manager selection (TPAs/sub‑advisers) as part of its solutions and discloses receipt of research and technology services from its recommended custodian as part of its brokerage arrangements.
Client services
Expertise
Fee options
$5,000 to $20,000, negotiable depending on complexity and scope
$0 - $2,000,000: 1.00% annually $2,000,001 - $5,000,000: 0.80% annually $5,000,001+: 0.50% annually All managed liquidity assets+: 0.25% annually
Main office
See office212 Maple Avenue, Suite 201
Red Bank NJ 07701
Advisors at this office
1
Offices (2)
Most active in
New Hampshire · New Jersey · New York
Disclosures
Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.
Business activities & affiliations
Is not active or affiliated with:
-
Insurance agent
They sell insurance products and may earn commissions on those sales.
-
Broker-dealer / trader
They provide brokerage services and may earn transaction-based compensation in addition to advisory fees.
-
Bank
They're affiliated with a bank that may offer its own financial products and services.
-
Trust company
They provide trust and estate administration services, typically for separate fees.
-
Fund sponsor
They manage or sponsor investment funds and may earn management or performance-based fees if clients invest in them.
-
Accountant / CPA / tax prep
They offer tax and accounting services, typically for separate fees.
-
Lawyer
They provide legal services, typically billed separately.
-
Real estate agent
They facilitate real estate transactions and may earn commissions.
-
Other specialized services
They may provide services such as pension consulting or municipal advisory work, typically for separate fees.
Quick links
Advisors at this firm
Peter D
CFA®, Series 63, Series 65
Jersey City, NJ
Stembrook Asset Management, LLC
Peter D'agati is a CFA® charterholder with 18 years of industry experience. He has been with Stembrook Asset Management, LLC since 2007, where he serves as one of two advisors. Stembrook Asset Management provides discretionary portfolio management, third-party adviser selection, and modular financial planning services to individuals, trusts, estates, charitable organizations, and business entities. The firm employs a combination of fundamental, technical, and cyclical analysis, with both long- and short-term trading strategies, including the active use of derivatives and allocations to digital assets when appropriate.
Thomas K
Series 65
Red Bank, NJ
Stembrook Asset Management, LLC
Thomas Kosinski is a financial advisor at Stembrook Asset Management, LLC with 13 years of industry experience. He holds a Series 65 designation and has been with Stembrook since 2010. Outside of his advisory role, he owns and operates Sandy Hook Outfitters, offering fly and light tackle fishing trips from boat and land. Stembrook Asset Management provides discretionary portfolio management, third-party adviser selection, and modular financial planning services to individuals, trusts, estates, charitable organizations, and business entities. The firm employs a combination of fundamental, technical, and cyclical analysis and utilizes options, derivatives, and digital asset allocations where appropriate.
Not sure where to start?
We'll help you think it through—whether you ultimately need an advisor or not. Warmer helps you compare advisors clearly, so you can choose with confidence.
For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Advisors are independent and may not have reviewed or updated this information. Please review an advisor’s Form ADV and do your own diligence before deciding whether to work with them.
Advisor matching and introductions are provided by FinanceHQ LLC (“FHQ”), a wholly-owned subsidiary of Warmer and an SEC-registered investment advisor. We receive compensation from certain participating advisors for introductions or referrals. This creates a conflict of interest because we have an incentive to recommend advisors who compensate us, including those who pay us more. You pay no fee to use our matching service, and advisor fees are not increased because of a referral or introduction. We do not review the ongoing performance of advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.
By using our service, you agree to our Terms of Service and Advisory Agreement, and acknowledge our Privacy Policy. Please review FHQ’s ADV Part 2A and Form CRS. Logos provided by Logo.dev
© 2026 Warmer Holdings Inc. (“Warmer”)