Mark Minervini

## Introduction  
Mark Minervini is a momentum trader and author renowned for his disciplined approach to trading, combining rigorous risk management with a focus on compounding small wins into large gains. His philosophy centers on executing a well-defined plan—never leaving trades to chance—and emphasizes contingency planning for both market risks and operational failures. Minervini’s method avoids speculative bets, instead prioritizing asymmetric risk/reward setups where potential gains outweigh potential losses. His book *Think and Trade Like a Champion* distills this into actionable rules and concepts, all grounded in real-world market behavior rather than theoretical ideals.

---

## Key Concepts  

### Initial Stop-Loss  
Minervini’s foundational rule: *Before buying a stock, establish a maximum stop-loss—the price at which you will exit if it moves against you.* This pre-defined exit eliminates emotional decision-making. The stop-loss isn’t arbitrary; it’s based on the stock’s recent price structure (e.g., a swing low or support level). Crucially, he insists on immediate execution when the stop is hit—no "waiting to see" if the stock recovers. The book doesn’t prescribe a fixed percentage (e.g., 7% or 10%) but stresses that the stop must reflect the stock’s volatility and the trader’s risk tolerance.  

### Reentry Criteria  
Being stopped out doesn’t mean abandoning a stock permanently. If the fundamentals remain strong and the stock forms a *new base* (a consolidation period) with a proper buy point, Minervini allows for reentry. He notes that *"it may take two or three tries to catch a big winner."* This reflects his view that early failures are part of the process—what matters is preserving capital for the eventual breakout.  

### Selling at a Profit  
Once a stock achieves a *"decent profit"* (defined as a multiple of the initial stop-loss), Minervini advises moving the stop up to lock in gains. His rule is absolute: *"Never let a position turn into a loss after achieving a significant gain."* For example, if a stock rises 15% after a 5% initial stop, the stop might be raised to breakeven or higher. The book doesn’t specify exact profit targets but emphasizes protecting gains *proportionally* to the trade’s progress.  

### Disaster Plan  
Minervini prepares for non-market risks like power outages or brokerage failures by maintaining backup systems and accounts. This isn’t hypothetical—he recounts instances where traders lost access to positions during critical moments. His lesson: *"Prepare for unexpected events by having redundancies."* The book doesn’t list specific tools but stresses the principle: operational reliability is as vital as trading skill.  

### Climax Top  
A *"rapid price acceleration (25-50% or more in 1-3 weeks) after a long advance"* often signals exhaustion. Minervini cites Qualcomm’s 1999 rally (260% in two months) followed by an 88% drop as a classic example. The takeaway: *"Sell into strength during this phase."* He warns against holding for "just a little more" upside when price action becomes parabolic.  

### P/E Expansion  
When a stock’s P/E ratio *"doubles or more during its advance (e.g., from 20 to 40), especially in late-stage bases,"* it suggests the price may be outpacing earnings growth. Minervini views this as a warning sign, not a standalone sell signal—context matters. For instance, a stock with strong fundamentals might sustain a higher P/E, but *"valuation alone is not a reliable buy signal"* (as Lumber Liquidators’ 90% decline demonstrated).  

---

## Rules in Practice  

1. **Always Go in with a Plan**: Every trade must have predefined entry, exit, and risk parameters. No "winging it."  
2. **Have a Process**: Even an imperfect process beats randomness. Refine it over time, but stick to it.  
3. **Never Let a Gain Turn into a Loss**: Once a trade is up significantly, protect the profit with a trailing stop.  
4. **Never Lay Odds**: Minervini seeks asymmetric setups—where potential reward exceeds risk by a clear margin.  
5. **Scale Up on Winners, Down on Losers**: Add to positions showing strength; reduce or exit those that weaken.  
6. **Initial Stop-Loss**: The non-negotiable first line of defense against large losses.  

These rules interlock: a plan without a stop-loss is incomplete, and scaling winners only works if losses are cut quickly.  

---

## Lessons and Mistakes  

- **General Electric’s 90% Decline**: Even "safe" stocks can collapse. Minervini uses this to underscore that no company is immune to downturns—risk management applies universally.  
- **Crocs’ 36% One-Day Drop**: Despite stellar earnings growth, the stock cratered. Lesson: *"Price action overrides fundamentals in the short term."*  
- **Qualcomm’s Climax Top**: The 260% surge was followed by an 88% drop. Minervini’s takeaway: *"Parabolic moves often end violently."*  
- **Deckers Outdoors’ Five Bases**: The stock’s 260% advance included multiple consolidations. This shows the value of *"base counting"*—recognizing when a trend is maturing.  
- **Lumber Liquidators’ ‘Cheap’ Trap**: The stock appeared undervalued during its decline, proving *"valuation alone isn’t a buy signal."*  

---

## Closing Thoughts  
Minervini’s method hinges on discipline: planning trades, managing risk, and adapting to price action without emotion. His examples—from Qualcomm’s euphoric peak to Crocs’ earnings-day crash—illustrate how markets reward process over prediction. The rules aren’t complex, but they require consistency. As he puts it: *"Big success... is the result of a series of small successes all linked together over time."* For traders, that means focusing on execution, not heroics.