Quantstreet Capital
Firm details
- Headquarters
- ,
- CRD number
- 316095
- Registered since
- February 27, 2026
- Website
- quantstreetcapital.com
- Custodians
- CHARLES SCHWAB & CO., INC.
- Fee structure
- Percentage of AUM, Hourly Charges, Fixed Fees, Other
- Client types
- HNWI99.36%
- Individuals0.64%
- Services
- Financial PlanningPortfolio Management for IndividualsPublication of PeriodicalsEducational Seminars / Workshops
Firm profile
FINTRXOverview
Quantstreet Capital is an independent, individual-owned LLC that operates as a registered investment adviser; it registered with the SEC in 2026. The firm serves both individual and family clients as well as institutional clients and provides a mix of services including financial planning, portfolio management for individuals and small businesses, publication of periodicals/newsletters, and educational seminars or workshops. Its fee model is flexible, incorporating percentage-of-AUM billing alongside hourly and fixed fees and other arrangements. The firm notes an industry affiliation with a law firm and does not identify as an active ESG investor or a capital allocator.
Assets & Accounts
Public Holdings
Investments & Alternatives
Location & Offices
Investment profile
FINTRXTraditional investments used
Alternative investments used
Active ESG investor
Technology & operations
FINTRXCRM & tech providers
TAMPs used
Clients
FINTRXClient base
Client personas
Asset composition
- Exchange Traded Equities61%
- US Government Bonds37%
- Private Funds2%
Owners & executives
2 of 2
Harry Mamaysky
Chief Investment OfficerCRD 4525380

Isaac Mamaysky
Chief Operating OfficerCRD 7516102
Wealth teams
FINTRXNewly hired reps
FINTRXRecent M&A activity
FINTRXRecent filings
FINTRXAwards
FINTRXLocation
, null
Location
, null
Headquartered in , null.
- Office locations
Similar firms
Tailwinds Wealth, LLC
RIAVadnais Heights, MN
Grizzlyrock Capital, LLC
RIAChicago, IL
Mozayyx Management LLC
RIAAustin, TX
Davis Private Wealth, LLC
RIARoyal Palm Beach, FL
Numa
RIAMiami, FL