1987issue C101-4
When open losses overwrite precommitted exit rules
After a purchase already underwater by transaction costs, a falling position can be held by comparing each new decline with money already gone. Editorial reading: if that hold is no longer the same testable enter, exit, or stand-aside procedure that produced the fill, a sunk-cost reframe has already overwritten the stop-loss and the risk-reward ratio.
- After a purchase already underwater by transaction costs, a falling position can be held by comparing each new decline with money already gone and by treating further decline as unlikely, until only a small fraction of the original outlay remains.
- A sunk-cost reframe books commissions, prior mark-to-market damage, or tax treatment as something other than a trading loss, so the account can decline while the position is still scored as if it were not losing.
- Once a forecast is committed, stated confidence can exceed hit rate, and a remote chance of recovering an open loss can be preferred to a sure-loss even when repeated trials of the open gamble lose more.
- A precommitted exit that realizes the bounded loss ends the sequence of rewritten odds. Leaving the stop-loss and the risk-reward ratio unfixed lets the holding period continue until capital is exhausted.
A trading psychology process is a single procedure that turns rule inputs, market state, and execution constraints into enter, exit, or stand-aside signals over the system holding period. After a purchase that is already underwater by transaction costs, a falling position can be held by comparing each new decline to money already gone and by treating further decline as unlikely, until only a small fraction of the original outlay remains.
Booking the next increment as cheaper than a trading loss
A sunk-cost reframe is booking commissions, prior mark-to-market damage, or tax treatment as something other than a trading loss so the next increment of risk looks cheap.
A 60 percent chance of a $150 net gain and a 40 percent chance of a $200 debit have the same $10 expected value whether the $200 is labeled an expense attached to a $350 win or labeled a loss against a $150 win, yet the expense label is easier to accept.
Transaction costs can be stored on a separate expense ledger so they never enter the trade record as a loss, which lets the account decline while the position is still scored as if it were not losing.
A recurring speculative debit can be recoded as acceptable because a $3,000 annual tax write-off ceiling exists, substituting a tax item for a closed trading outcome.
When stated confidence exceeds the hit rate
Once a forecast is committed, stated confidence can exceed hit rate. Chart-trained predictors were right about 47 percent of the time while reporting confidence near 65 percent, and 100-to-1 certainty corresponded to being correct only about 75 percent to 80 percent of the time.
A probability shift from 0 percent to 5 percent or from 95 percent to 100 percent can be weighted more heavily than a shift from 30 percent to 35 percent, which supports paying far above a five-cent expectancy for a remote 1-million-to-1 payoff.
With a $4,500 open loss, a 5 percent chance of recovering the full $5,000 versus a 95 percent chance of losing the rest can be preferred to taking the sure $4,500 debit, even though 100 repeats of the gamble lose $475,000 while 100 sure losses lose $450,000.
A sure-loss is a realized, bounded debit taken now instead of an open gamble that still contains residual account risk.
A precommitted exit ends the rewritten odds
A stop-loss is a pre-entry and in-trade bound on loss or exposure so a position is closed at a planned distance rather than when remaining capital runs out. A risk-reward ratio is a filter that compares planned upside to planned downside in the same units before size is added or a losing position is kept open.
A precommitted exit that realizes the bounded loss ends the sequence of rewritten odds. Leaving the stop-loss and the risk-reward ratio unfixed lets the holding period continue until capital is exhausted.
All readings on this track · 27 readings
- 1987Precommit the stop and require a surplus payoff
- 1987When open losses overwrite precommitted exit rules
- 1991Ranking month-end holds with risk-reward and stops
- 1994Evaluating percentage profit exits on trend-following averages
- 2001Construct reward to risk before entry
- 2003A pre-trade readiness checklist for entry, abstention, and risk
- 2003Evaluating out-of-the-money strikes with saddle premiums and implied volatility
- 2004A critique of one-procedure trading decisions
- 2004Mechanical stops leak intent and misprice losses
- 2004Implied-volatility premium on rate indexes
- 2006Keep the stop that authorized the entry
- 2006Bound the loss with a risk-to-reward filter before entry
- 2007Audit the operator before abandoning a system
- 2007Failed-break slingshot reversal rules
- 2007A system-management template that sets the stop and the required reward before entry
- 2007Construct a pre-trade style envelope for entries and skips
- 2008Systems that skip the three decision gates
- 2010Four-gate veto before trend entries
- 2012Construct a trading plan as one written procedure
- 2012Forex stops and reward targets by quote increment
- 2013The average directional index as a lookback cluster and a risk-reward bound
- 2014A three-step worksheet for VIX futures tick value and low-vol risk-reward
- 2014Binary option premia, fees, and pre-expiry risk-reward
- 2015Selling far out-of-the-money commodity option premium as a forgiving timing case
- 2016Prepaid option spreads that bound range-day risk and reward
- 2016Pre-trade risk-reward versus instinctive exits
- 2020Bounding a short-dated option spread with a stop, a gap remainder, and a credit exit