SyntheticFi

Cheapest securities-backed line of credit (SBLOC), right on your existing brokerage platform.

SyntheticFi adds a securities-backed line of credit to your existing brokerage, offering a base rate of 5.83% with no credit checks or account switching. It targets investors who want liquidity from their investments while staying on their current platform, with the core value being cheaper, accessible borrowing against portfolios through an SEC-registered add-on.

Step through SyntheticFi’s homepage year by year — the pitch, the product and the design, as the web remembers them.

Each year opens the Wayback Machine capture closest to that date.