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 operates as an independent registered investment adviser serving high‑net‑worth individuals, families and institutional clients. The firm’s advisory mix centers on discretionary portfolio management and financial planning, augmented by client education through newsletters and seminars. Fee arrangements include percentage-of-AUM billing alongside hourly and fixed-fee engagements, which allows flexibility for one‑off planning work as well as ongoing asset management. Investment posture leans toward liquid equity exposure as the primary building block of client portfolios, with a sizable allocation to exchange‑traded instruments. Quantstreet Capital is not positioned as an ESG‑focused manager. The firm also supports multiple client types and appears to combine portfolio construction with educational outreach and written commentary as part of its client service model.
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
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