How the Sextant track record works
Every night, our system publishes a model portfolio. This page explains how we score it — and how you could check our numbers yourself.
The one-line promise
Anyone holding our published portfolios, this page, and free public closing prices can rebuild our performance chart and get the same answer. If you can't, we've broken something, and we want to know.
Two scoreboards
Did each night's call turn out to be good? Every nightly portfolio is scored on its own, as if you'd bought it that night and held it. A rolling 60-day average of these scores is our internal gate: until it stays convincingly positive — including through at least one major change of view — no real money moves. Ever.
What would one continuously-run portfolio have earned? We also track a single portfolio that follows the system night after night. Every change from one night to the next counts as trading, every trade gets charged a cost, and the result is one performance line shown against the S&P 500. This record starts on 11 August 2026 — the first night the system ran with no human touching it.
Both scoreboards use the same prices, so they can never tell different stories.
How we price things
We use official closing prices — our own data first, Yahoo Finance as backup. Both scoreboards draw from the same source.
One honest quirk: our system runs before the US market closes. So on day one, a position has no real result yet. Rather than print a meaningless 0.0%, we label it "no evidence yet" and wait. Real results start accumulating from the second day.
If the system holds bets in both directions on the same instrument, we count both — we never quietly cancel them out to make the trading look smaller.
Trading costs
Nobody trades for free, so neither does our record. Every trade is charged a cost based on how easy that instrument is to trade — from 0.03% for the most liquid ETFs to 0.10% for everything else. These are deliberately conservative estimates, not real fills, and we say so. On day one, the entire starting portfolio is charged as if bought from scratch.
When we can't score something
Sometimes an instrument can't be priced — an unusual contract, a bad data feed. We never quietly drop it. It appears in the published record with the reason stated, so you can always see what was left out and why.
Can a human interfere?
The system runs by itself. A manual-override facility exists for emergencies, but every use of it is logged with a reason and an expiry date, and the record shows both versions: what the machine did alone, and what happened with human hands on it. To date, it has never been used.
The receipts
Every nightly portfolio, every score, and every ledger update is published as a timestamped file. The chart and the table you see are built from those files and nothing else.
The bottom line
Our rules limit losses; they don't manufacture profits. If the system's judgement isn't good enough, the scoreboard will say so. That's not a bug in the process. That is the process.