A trading technology firm, not a fund.
Castle Capital LLC is a Minnesota quantitative trading technology company. We select rules-based ETF strategies and run the automation that executes them.
We are not accepting new clients. Castle Capital currently runs its strategies only for the founder's family accounts while a compliance review is underway.
Capital stays in the account holder's own brokerage account at Alpaca Securities LLC. We never take custody of it. The platform places the orders the strategies' rules produce, and the operator chooses which strategies each profile runs.
How the strategies workFirm record
Mandate
Run explicit, rules-based strategies in brokerage accounts the account holder owns and controls. Strategies are written as explicit rules, evaluated on a fixed schedule, and executed the same way every trading day — which is what removes emotion from the decision, not a claim about returns.
A platform where an investor can read exactly what a strategy will do before it does it, watch it execute in a brokerage account they control, and disconnect at any time. Transparency is the product; the automation is how it is delivered.
Operating principles
Every strategy is defined as code and evaluated against market data on a schedule. The operator chooses which strategies each profile runs and can change them; every change is logged and dated.
The strategies use 2x–3x leveraged and volatility ETFs, carry a backtested beta of about 1.2 to the S&P 500, and can lose most of their value in a sharp decline.
Funds never move to Castle Capital. We hold API permission to place orders on the account you connect, and nothing beyond it. Revoke the keys and the automation stops.
Every order, fill, and rebalance appears in your own Alpaca account as it happens. Nothing about how your money is executed is visible only to us.
We are not accepting new clients.
Castle Capital currently runs its strategies only for the founder's family accounts while a compliance review is underway. Questions about how the platform works are still welcome.