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Stocks and Shares · Managing equity risk · lesson 5 of 9 · 6 min read · David Alexander

Sizing for the earnings gap

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gap-sized equity position

The position sized against an earnings-scale move rather than the daily stop: same budget, ten times the distance, a tenth of the shares. Equity granularity turns the commodities zero into a small positive number - holding through results becomes affordable at reduced size, which makes the honest choice richer and the dishonest one less excusable.

The commodities gap-sizing lesson ended at zero contracts and a hard choice. Equities re-runs the arithmetic and finds a third option living in the granularity.

The same division, the honest distance

The machinery is lesson 2's unchanged: budget divided by distance. The distance is the honest input - not where a stop would sit, but what results could plausibly print: the name's own earnings-move history, module 2's calibration, doubled for humility. The worked example uses ten times the daily stop, and the answer lands at a tenth of the size - small, real, and holdable through the print with the budget intact.

What granularity buys

  • A position that exists: 250 shares where commodities offered zero contracts - the gap costs size, not existence, because shares divide.
  • A menu instead of a cliff: full size and flat through results, or gap size and hold - both inside the budget, both honest, chosen per name per quarter.
  • No excuse left: with a holdable reduced size always available, full size through results is never forced - it is the budget renegotiated by hope, visible as such in advance.

The rhythm this creates

A per-name position now breathes with the calendar: daily-stop size between events, gap size across them, back again after - the trim-and-restore pattern professionals run, generated here by nothing but the platform's own sizing arithmetic fed two honest distances. The costs module priced the extra trades; the granularity makes them small; and module 7's journal will show whether the discipline actually ran. One caveat carries from the commodities twin: the gap estimate is an estimate - a 15% print against a 10% assumption still overshoots the budget, which is why the distance gets doubled for humility and the halving lesson comes next.

Worked example

figures in USD

The lesson-2 account - $100,000, 1% risk - resized against an earnings-scale gap of $5.00 instead of the daily stop.

  1. Same account, same 1% budget of $1,000 - but the distance is an earnings-scale move of $5.00, ten times the daily stop, because that is what the position must survive.
  2. The division returns 200 shares: a tenth of the daily-stop size, carrying $1,000 through the print.
  3. Where commodity contracts hit zero, share granularity lets the position shrink to fit - the gap costs size, not existence. Holding a tenth-size position through results is a choice the budget can actually afford; holding full size is the budget renegotiated by hope.

Check your understanding

Question 1 of 2

What does share granularity change about gap sizing, against the commodities result?