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Everything a client needs on one page: what you hold, why you hold it, what it has actually done, and the trades that get you there — rebuilt the moment you change profile, horizon or regime.

Live above every weighting below
Model portfolio

Balanced

risk-off reading · 10-year horizon
Profile
Horizon
Regime
Risk meterregime-model v2 · brief #87

    Model allocationbalanced · risk-off
      Model total100 %

      Projected rangeillustrative · 10y
      Worst 5 %
      Median path
      Best 5 %

      €10,000 grown over 10 years across 160 paths drawn from the historical volatility of this mix. Illustrative, not a forecast — the median path is not an expectation.

      Explainer AI rewritten every time this screen changes

      The Explainer is off. Turn it on and every number on this screen — the meter, the sleeves, the projected range, the drawdown halt and the record — is written out in ordinary language, in euro, with the downside stated as plainly as the upside.

      Has this model been right?

      sample 2014–2026

      Model output on an illustrative profile over one sample period, costs included. Past behaviour is never a promise about the future, and nothing here is personal investment advice.

      Why this weighting

      model reasoning

        Model output for an illustrative profile — not a recommendation for any individual investor.

        Macro cycle

        liquidity vs regime · 36m

        Gold: liquidity index. Green: regime score. Dashed verticals: events that moved a component by more than one standard deviation.

        Your holdings

        Total 100 %

        Put in what you actually hold and what it is worth. Everything below is then priced in euro, not percentages.

        Used for the trade list, the cost line and the downside figure.

        Deltas compare the model with what you entered; the live model caps changes at 5 points per sleeve per week, so a large gap is closed in steps. Age it three months drifts your sleeves with the last quarter of the sample so you can see what an un-rebalanced portfolio looks like.

        Your rebalance plan

        Not a chart of the gap — the list of trades that closes it, in the order you would place them, priced in euro.

        Costs are an expected-slippage estimate that grows with the size of the trade; a single trade over the 20 bps cap is skipped and carried to next week. Nothing here is an instruction to trade — it is arithmetic on the weights you entered.

        Your saved portfolio

        nothing saved

        Keep this portfolio in this browser and the portal opens on it, with the drift and the guard headroom already measured.

        Stored in this browser only — it never leaves this device and clearing your browser data removes it. Accounts open soon.

        What the projected range assumes

        The honest part of a projection is the bottom of it. Here is the loss you would have to sit through.

        Alerts

        if cpi_yoy > 3.2 and liquidity_3m < 0 → notify + tilt gold +2
        if regime_score crosses 50 for 2 weeks → rebuild allocation
        if geo_risk > 70 → raise cash floor to 12 %
        Write your own rulesThree lines of plain English, evaluated every week against the same series the model uses.Pro · €19 / month

        What Pro adds

        the same model, fully unlocked
        • All three profilesConservative, Balanced and Growth, rebuilt weekly. Each with its own published bands, the full “why this weighting” note and a drift table against what you actually hold.Pro€19 / month · compare plans →
        • Alerts & custom rulesThresholds, not opinions. Five built-in alerts on CPI, rates, liquidity, geo-risk and the regime label, plus one-line rules of your own, evaluated every week.Pro€19 / month · how alerts work →
        • Export & archiveTake the weights with you. Weights, bands and caps as JSON or CSV, plus every regime reading back to 1986 so an old brief can be read against the model that produced it.Pro€19 / month · export formats →

        Four limits sit above every weighting on the previous page — they are the reason a client can close the laptop and go to sleep.

        Position sizing

        quarter-Kelly
        0.25× Kelly
        00.25 — house setting1.0

        Every tilt away from the strategic mix is sized at a quarter of the mathematically optimal bet. Full-size bets are optimal only if the estimates are perfect; they never are. A quarter gives up a little of the good years and removes most of the paths that end badly.

        Drawdown halt

        portfolio level
        −20%

        If the portfolio is 20 % below its own high-water mark, the model stops adding risk and moves the sleeves to their defensive floor until the reading recovers. Recovery comes from patience and time, never from doubling the position.

        Position ceiling

        per single company
        7.5%
        largest single company 3.8 %ceiling 7.5 %

        No single company carries more than 7.5 % of the portfolio. Sleeves are baskets, never one name — and the Bitcoin sleeve keeps its own hard cap of 15 %, never added into contracting liquidity.

        Execution cap

        rebalancing
        20bps
        this week’s rebalance cap 20 bps

        A rebalancing trade is skipped when expected slippage passes 20 basis points. Drifting one week longer costs less than paying a wide spread, and the 5-point weekly step limit means nothing has to be done in a hurry.

        What the guards changed

        illustrative
        Every halt, skip and cap, back to 1986The dates the drawdown halt fired, the trades the slippage cap skipped and what each decision cost or saved against the unguarded mix.Pro · €19 / month

        Guards are model settings, not promises about markets. Everything here is educational and illustrative — never personal investment advice.

        Every regime call this model has made over the sample period — the ones it got wrong printed as large as the ones it got right — and what the whole thing did against a static 60/40.

        Model against a static 60/40

        €100 invested at the start of the sample, both mixes rebalanced quarterly with costs taken out. The shaded stretches are the ones where holding this model was the worse decision.

        Where it lagged

          A wealth model that never shows a lagging stretch is showing you a selected picture. These are measured from the relative curve: each one starts at a high-water mark of model-over-benchmark and ends when that mark is regained.

          Every regime call

          Each row is one flip of the label, what the sleeves did in the three months after it, and whether the call was right.

          Scoring rule, fixed before the numbers were read: a risk-off call is right if equities returned less than cash over the three months after the flip; a risk-on call is right if equities returned more. A neutral reading is not a directional call, so it is not scored. The call still running is shown but not counted.

          Hit rate, stated plainly

          completed directional calls

          The losses, side by side

          How far below its own high-water mark each mix went. This, not the return line, is what the guards are for.

          What this record does not tell you

          the limits, in full
          • One sample period. Everything above is one run of one model over one stretch of history. A different stretch would give different numbers, and this one is not long enough to settle the question.
          • A small number of calls. Read the hit rate next to its sample size, never on its own.
          • No tax, no fees beyond execution. Slippage is estimated and taken out; a platform fee, a spread on your own broker and your own tax position are not in these numbers.
          • It is not your portfolio. This is the model on an illustrative profile. What you should do with your own money is a question for someone licensed to answer it.

          Tell it who you are rather than which risk profile you want, and the model reshapes around you — then says, in plain words and in euro, what changed, why, and what the choice costs you.

          Explainer AI rewritten every time this screen changes

          The Explainer is off. Turn it on and every number on this screen — the meter, the sleeves, the projected range, the drawdown halt and the record — is written out in ordinary language, in euro, with the downside stated as plainly as the upside.

          Three questions first

          Nothing here leaves this browser. The answers only change which numbers are put in front of you and which of the four guards is argued hardest.

          Every figure on this page is then in euro rather than percentages.
          How long can it stay invested?
          This sets the horizon control on the Portfolio view too.
          How much of a fall could you sit through without selling?
          Answer honestly — a wrong answer here is the one that makes people sell at the bottom.

          Which of these is you?

          nothing chosen yet

          Pick one. The model sets the profile and the horizon, argues the guard that matters most to you, and prints what it changed, what it now holds and what it gives up.

          A persona is an illustrative profile, not a judgement about you and never personal investment advice. Sizing stays at quarter-Kelly (0.25) inside the 7.5 % per-company ceiling, the −20 % drawdown halt and the 20 bps execution cap in every one of them.

          What that changed

          One editorial letter a week that explains what changed in the data and what the model did about it — in plain language, with the series named.

          Weekly macro brief

          Thursdays 07:00 CET
          • Issue87

            CPI 3.4 %, the bond market saw it first

            Two-year yields led the print by eleven days. What the curve knew, and what the model did with it.

            MERulebook Wealth Editorial · 2026-09-04 · 9 min read
          • Issue86

            Gold at records — what central-bank buying means for a 60/40

            Official-sector demand has changed who sets the gold price. Why a 10–20 % sleeve is not a bet.

            MERulebook Wealth Editorial · 2026-08-28 · 10 min read
          • Issue85

            Liquidity cycles and Bitcoin: a 4-cycle view

            Four liquidity cycles, four Bitcoin cycles, one uncomfortable overlap. How we size a volatile sleeve.

            MERulebook Wealth Editorial · 2026-08-21 · 11 min read
          • Issue88

            Why the regime label needs two weeks to flip

            Hysteresis in the meter, explained with the 2019 and 2023 false starts.

            MERulebook Wealth Editorial · scheduled
            Coming
            Thu 2026-09-11

          Read every brief in the archive →

          A room of long-horizon investors reading the same brief — free to read, and moderated so it stays that way.

          House rules

          • No leverage talk, no "signals", no price targets
          • Cite the series (FRED id, GDELT query) when you make a claim
          • Disagree with the model, politely; the editors read every thread

          Editors' picks this week

          The readers' forum opens with early access.

          Read brief #87 →

          Your dashboard

          Accounts open soon. One Mast account will keep your profile, horizon and holdings between visits.

          Say what you want once. The banker then works on its own — watching the drift, checking the guards, digesting the briefs — and every single thing it does is written down here, with the reason and the number it produced.

          Your standing mandate

          Since you last looked

          Everything it has done, in your name

          Each line is what it did, why it did it, and the number that came out — computed from the same functions the panels on the other views use, so the log and the screen can never disagree.

          Model output on an illustrative profile, never personal investment advice. The banker is unleveraged, it rebalances weekly at most, and it sizes every tilt at quarter-Kelly (0.25) inside the 7.5 % per-company ceiling, the −20 % drawdown halt and the 20 bps execution cap.

          Private bankerchanges the portfolio for you

          Model output for an illustrative profile — never personal investment advice.

          live regime 38.0 liquidity −1.2 % CPI 3.4 % geo-risk 62 feed 0.8 s alerts 4 banker idle Kelly 0.25 · DD halt −20 % · 7.5 % ceiling · 20 bps 17 views · C banker · A this view · ? keys

          Demo · simulated data · Part of the Mast family