Gagnon Securities, LLC

Gagnon Securities manages discretionary equity-focused accounts for individual and institutional clients and also provides brokerage services for retirement and non-retirement accounts. The firm is dually registered as an SEC investment adviser and a FINRA-member broker‑dealer and clears client accounts through National Financial Services.

The firm follows a research‑intensive, generalist, stock‑by‑stock approach aimed at aggressive capital appreciation, emphasizing company meetings, site visits, industry research and long-term conviction. Accounts are managed on a discretionary basis and the brochure stresses that the strategy can produce substantial volatility, so alignment between the firm’s approach and a client’s objectives is important.

The brochure highlights several features that distinguish Gagnon from many multi‑team peers: it routinely executes transactions through its broker‑dealer platform and charges transaction/commission‑based fees for many non‑retirement accounts rather than relying solely on asset‑based advisory fees, and it operates affiliated pooled vehicles and partner funds that reflect fund‑sponsor activity. The firm discloses a prior SEC enforcement order relating to reporting violations and describes clearing‑related credits and margin/short‑interest arrangements as potential conflicts; the brochure does not describe standalone financial planning services.