Your own AI trading desk.
Greenwick is a Mac app where a team of specialist AI agents researches the market, argues the bull and bear case, and brings you trades you approve with one click — in your own brokerage account, with your own AI, inside hard safety rails no model can talk its way past.
Now in private beta · runs on your Mac, starts in your broker's paper environment
The real app — every screenshot on this site is Greenwick as it ships.
One question in. Fourteen specialists on it.
Ask a chatbot about a stock and one model gives you one confident answer. Ask Greenwick, and a pipeline of specialist agents researches, argues, and decides — then a deterministic risk engine checks the result before anything can reach your broker.
Built around one question: why should you trust it?
Every part of Greenwick has an answer that isn't "trust the AI."
Research that argues with itself
Technical, fundamental, macro, news, and sentiment analysts report independently — then a bull and a bear researcher make the strongest case for each side before a portfolio manager decides.
Greenwick actively looks for reasons not to take a trade.Guardrails the AI can't touch
Position caps, daily-loss lockout, confidence floors, and session cutoffs live in deterministic code outside the AI loop. Every order passes the risk engine — no exceptions, no override prompt.
A persuasive model still can't out-argue a hard-coded limit.You approve the trades
The desk writes a full trade ticket — symbol, size, entry, stop, reasoning — and waits. Nothing reaches your broker until you approve it. Autonomy is opt-in, per strategy, inside your limits.
Automated help, not a black box with your account keys.Finds ideas overnight
A nightly screen ranks 10,000+ US stocks and ETFs on momentum and volume — no AI tokens, pure math — and feeds the best into your watchlist. Your morning brief covers names you'd never have typed in.
You stop being the bottleneck for what gets looked at.Your AI, your key
Bring a key from Anthropic, OpenAI, Google, xAI, Mistral, DeepSeek, or Azure — or run fully local, private models with Ollama. Assign different models to different jobs and benchmark them.
You choose the intelligence. No lock-in, no middleman markup on tokens.Private by design
Everything runs on your Mac. Broker and AI keys live in the macOS Keychain and never reach us — Greenwick has no server that could hold your money, your keys, or your trades.
The safest place for your trading data is hardware you own.Ask one AI, or ask a desk
The difference isn't a smarter model — it's the process wrapped around every model.
One perspective, no devil's advocate, no risk check, no memory of how its last call worked out — and it sounds equally confident either way.
Independent analysis, a structured debate, a deterministic risk check, your approval — and after the trade closes, a postmortem whose lessons feed the next analysis.
Most "AI trading" is a platform.
Greenwick is a Mac app.
The category default is a service in the middle — funds or broker logins held on the vendor's servers, the vendor's chosen model making the calls, and lately even placing the trades. Greenwick was built the other way up: everything that matters stays on your machine, in your name, under your rules.
Your account stays yours
You connect your own brokerage with keys that live in your Mac's Keychain. Greenwick holds no funds and takes no power of attorney — and there's no Greenwick server your money or your logins could even move to.
No custody means no one sits between you and your money.The AI advises. It never holds the pen.
The industry's newest idea is handing a language model direct order access. Greenwick's is the opposite: models research, argue, and recommend, while deterministic code checks every order against your limits on its way to your broker — a gate no model can skip or talk past.
The part that can spend money doesn't listen to the part that can be persuaded.A flat subscription, never a percentage
No assets-under-management fee, no cut of your trades, no price that climbs because your account grew. You pay for software the way you pay for any pro tool — and what you make with it is yours.
Your upside is not our revenue line.It touches only what it opened
Positions from before you connected — and anything you buy on your own — are badged YOURS and invisible to every strategy. And STOP cancels all of Greenwick's open orders without selling a single share.
An assistant with boundaries, not a platform with your whole account.Simple pricing, honest trial
Every install starts with a 14 U.S. market-day free trial of everything — no card required. When a subscription lapses, your data stays readable and safety controls stay live on open positions.
Greenwick Watch
$19 /mo
or $190/yr
See the whole picture — research, screens, and briefings.
Greenwick Trade
$49 /mo
or $490/yr
Your brokerage connected — you approve every order.
Greenwick Sentinel
$129 /mo
or $1,290/yr
Hands-off strategies inside guardrails you set.
Be one of the first at the desk.
Greenwick is in private beta on macOS. Beta testers get every feature free while it runs, a direct line to the founder, and a real say in what ships next.
Join the beta waitlist