Your biggest leak

A report card with twelve amber rows tells you everything and nothing — you can't work on twelve things at once. So Edge Lab does the ranking for you and names one primary leak: the single habit costing you the most right now.

It appears on the Report tab as "Your biggest leak", with a one-line explanation of what's driving it.

One leak at a time, on purpose

Every time Edge Lab reads your trading, it picks exactly one behavior as the primary leak. Not a top-five list, not a scored ranking of everything — one.

That's a deliberate constraint. The leak Edge Lab names is the one where a change in your behaviour buys you the most money for the least effort. Fix it and a different one takes its place, which is exactly what progress looks like.

Priced in dollars

The full report doesn't just name the leak — it prices it. You get a dollar figure for what the habit has cost you, and a counterfactual that replays your actual trades with the habit removed, so you can see the equity curve you'd have had.

That's the part that tends to change behaviour. "You're overtrading" is easy to shrug off. "Your overtrading cost you $4,180 across 63 trades, and here's the curve without it" is harder to ignore.

Your leaks over time

The History tab keeps a log: Your biggest leak, over time. It shows the leak you have now and every leak you've had before it, newest first.

• Right now — your current primary leak, with the date it took over: "Since 14 June."
• Leaks you've moved past — the ones that used to be your biggest problem and no longer are, each with the stretch it ran for and how long it lasted.

A leak that stays your primary problem across many nightly readings shows as one entry with a duration — "23 days" — rather than twenty-three identical rows. You're seeing the shape of the problem, not the log of the analysis.

If nothing has resolved yet, the section says so:

This has been your primary leak for as long as we've been tracking. Fix it and it'll show up here.

That list of resolved leaks is the most direct evidence Edge Lab gives you that you're improving. A grade moving from C to B is progress. A leak leaving the top spot for good is progress you can point at.

What to actually do about it

• Read the headline. Each leak carries a plain-English line explaining what earned it — the specific pattern in your trading, not a generic description of the behavior.
• Look at the receipts. The full report expands the behavior to the trades behind it, so you can see the actual fills that made the case.
• Check the counterfactual. It tells you what fixing it is worth, which helps you decide how hard to work on it.
• Then watch the transcript. That behavior is a row on your week-by-week report card. If you're genuinely fixing it, the row moves.

Where to go next

• Reading your grade card — the full set of behaviors your leak is drawn from.
• Your report card, week by week — watching a leak actually close.
• What your trades were worth — which grades of trade are costing you money.