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Study the losses you actually take

Use a complete trade audit to test an exit rule.

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Illustration for: Study the losses you actually take
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Stock Around the Clock

Minervini stresses loss control, independent research and contingency planning. His analysis of past trades led him to see how limiting large losses could change the overall result, even when some eventual winners would also be stopped out. The chapter does not disclose a fully reproducible stock-selection algorithm. It is more revealing about review and execution than about a secret entry formula.

Our interpretation is to audit all trades with information available at the time. A stop rule that looks excellent after tuning it to past extremes may simply fit noise. Include whipsaws, re-entry rules, gaps and costs in the comparison. The aim is not to avoid every losing trade but to identify whether the process remains usable after losses and whether its apparent improvement survives new observations.

The original mistake and the eventual reversal

Minervini describes moving away from low-priced shares making new lows towards an approach that gives substantial weight to strong price behaviour. Research and experience changed his beliefs rather than merely improving execution of the original idea. He also emphasises taking responsibility for his own reasoning instead of blaming a broker or tip source. The interview does not reveal all of his selection rules, but it does explain why independence, asymmetric payoffs and a prepared response to failure became central to his process.

The book’s example: auditing every exit

He studied what happened after he sold, asking whether stopped-out shares kept falling or recovered and whether profitable sales continued rising. In his historical sample, limiting losses to 10% would have increased profits substantially. Schwager raises the necessary objection: such a rule also removes eventual winners that first decline. Minervini says he checked that effect and found it relatively limited in his sample. The exchange is valuable because it includes the counterargument. A rule cannot be judged only by the losing trades it would conveniently have removed.

Price, fundamentals and contingency plans

He describes using both fundamental and technical information, but with an asymmetry: a good fundamental story normally needs price confirmation, while exceptional relative strength may indicate an improvement not yet visible in reported fundamentals. He also says stops should depend on the trade’s horizon, expected gain and market setting rather than one universal distance. Planning includes what to do after being stopped out, when re-entry is justified and how to respond to a profitable move. The aim is to reduce improvisation when emotion is strongest.

Schwager’s emphasis: learn from the complete record

The chapter links discipline with the willingness to discover that one’s initial beliefs were wrong. Minervini’s poker comparison stresses waiting rather than needing to participate in every round. His reported win frequency also challenges the idea that good trading requires being right almost all the time: gain and loss size matter. Schwager sees the trade audit as a transferable exercise. Our additional caution is to preserve out-of-sample testing and realistic fills; the book’s historical 10% experiment is not a universal recommended stop or a guaranteed maximum loss.

Worked example

A fictional entry is 50, planned exit 48 and size 100. Planned loss is 200. If the first fill is 44, actual loss is 600 before costs.

Limits

A stop cannot guarantee a fill price. Historical optimisation and extraordinary work schedules do not prove a repeatable edge.

Case connection

Minervini’s exit discipline depends on executable prices. Separate a planned stop from the price actually available during a squeeze.

Volkswagen: when the exit becomes scarce

A view about a company’s value is different from the ability to buy shares back when required.

A disclosure changes the setting

On 26 October 2008, Porsche disclosed 42.6% ownership of Volkswagen ordinary shares plus cash-settled options relating to 31.5%. These were different forms of exposure, not 74.1% direct share ownership. In a release dated 29 October, Porsche described extreme price movements and proposed settling hedges relating to up to 5% of the shares, depending on conditions. That was an announced intention, not proof that every proposed transaction occurred. [1, 2]

Interpretation: covering needs a seller

A short seller eventually needs to close or otherwise settle the obligation. A view that a business is overvalued cannot produce shares on demand. If urgent buyers compete for a limited supply, the price needed to complete a transaction can separate sharply from a long-term valuation. The mechanism is about timing and availability. It does not require every buyer to believe the business has suddenly become more productive, nor every short seller to share the same thesis.

Do not confuse a contract with a share

Cash settlement pays a contractual amount rather than automatically delivering the underlying shares. A counterparty may hedge its exposure, but the headline option percentage alone does not disclose every hedge or every available share. Subtracting a few published percentages and calling the answer the exact tradable supply would be too confident. Separate legal ownership, economic exposure, potential hedging demand and actual market liquidity before drawing a conclusion. This distinction connects directly with the book’s options appendix.

Hypothetical: right eventually, unable to wait

Suppose a fictional trader shorts 100 shares at 100. At a price of 200 the mark-to-market loss is 10,000 before fees, and funding requirements may force a decision. A later fall to 60 would not rescue a position already closed at 200. These are invented prices, not a Volkswagen trade reconstruction. The example separates the terminal forecast from the path required to reach it. A plan needs a financing and exit assumption as well as a valuation opinion.

Different questions for different chapters

Galante’s chapter asks whether a bearish business case includes the special risks of being short. Minervini’s asks what happens when an intended exit level cannot be obtained. Masters’s asks how a dated disclosure changes the catalyst. Bender’s asks whether a probability distribution built from ordinary conditions misses a change in available supply. These are teaching comparisons, not claims that any of these traders participated in this episode or used a particular strategy on Volkswagen.

Source limits matter

The cited releases are Porsche’s own contemporary statements. They establish what Porsche disclosed and proposed; its explanation of responsibility is an interested party’s account, not an independent finding about every cause or motive. This case therefore avoids treating the company’s blame of short sellers as a settled verdict. Nor can public percentages reveal each participant’s borrowing terms. A defensible explanation can describe a plausible scarcity mechanism while remaining explicit about information it does not possess.

The habit to keep

Before evaluating a short thesis, write a second thesis about how it can be financed and closed. Ask what changes if the available supply contracts. An attractive destination does not guarantee a survivable journey, and a contractual exposure does not tell you everything about the underlying shares.

Consider

What would a share-availability check add to a valuation argument?

Analysis guide

Distinguish borrow availability, financing capacity and executable liquidity. Explain why a cash-settled option percentage is not direct ownership.

Porsche · Holdings disclosure, 26 October 2008 · Porsche · Statement dated 29 October 2008

Reflection

How would you record an exit that followed the rule but filled badly?