Baskets lock before they run
Voting closes, the consensus picks are chosen and written down, and only then does any order exist. Every cycle's basket stays on the record afterwards.
How it works
Your vote is weighed, not just counted.
Bring your own Robinhood account, cast one ballot per cycle across the S&P 500, and watch the tally settle into one basket. The more often you're right, the more your ballot moves it.
The steps
Three steps, one loop.
Each step is a consequence of the one before — one unbroken line.
- 01Connect
Connect your own brokerage account.
Link your Robinhood account through Robinhood's agentic API, and set the ceiling — how much of your buying power the club may use. Everything above that line stays yours to run as you always have. Same account, same login.
- 02Vote
Vote on the basket.
Each cycle the club votes across the S&P 500. The names with the most weighted support — roughly twenty — become the basket. Pin a short thesis to a pick and the club sees your case beside the tally. Your weight blends what you've put behind the club with the record of picks the closes proved right — keep calling it well and your ballot carries further.
- 03Execute
The basket executes in your account.
One decision for the whole club, sized to each member's own settings. The shares land in your account, in your name. Concordia never holds, pools, or transfers money — there's nothing to withdraw, because nothing ever left.
Cadence — every trading day
- OvernightBallot opens
- 09:15 ETVoting closes
- 10:15 ETBasket executes
Deferred buys top up the next trading day. Voting power is recomputed on its own schedule.
Inside the club
What runs underneath.
A vote only matters if the thing acting on it is boring, checkable, and slow to do anything irreversible. These are the parts that turn a vote into an order — and the parts that stop one.
Orders are reviewed, then placed once
Each order is submitted for review before it is placed, and carries a reference derived from the session, the member and the symbol — so a retry finds the existing order instead of creating a second one.
A sweep watches for silence
A health check runs through the day against the database and alerts on the failures silence hides: a dead broker token, a ballot that never opened, a stuck session, a disarmed executor on a cycle morning.
Live orders need a human to arm them
Placing real orders requires the master armed flag as well as live mode, and that flag is set from an authenticated admin action — never by a scheduled job. Disarmed, a run still computes the basket; it just does not place.
Your cap is enforced per account
You set how much of your own buying power the club may use. Sizing is clamped to that, to an optional daily dollar cap, and to a ceiling on how many orders a single run may place.
An append-only audit log
Arming, vote closes, executions and alerts are appended to a log with actor, action, target and timestamp. Entries are added, never edited.
Join the argument.
Concordia is invite-only. With a code: connect your own Robinhood account, set how much of it the club may use, and vote — your say grows as your picks prove out. No code? Leave an email — invites go out in small rounds.
No invite yet
An address only. Membership is never confirmed or denied here.