The Perfect Entry Is the Decision That Matters Least

Ask a struggling trader what went wrong and you'll almost always hear the same thing: "I got in too early." Or too late. The entry, always the entry.

I spent my first two years the same way. I'd stare at a chart for twenty minutes trying to shave a few dollars off my fill, convinced that the difference between a good trade and a bad one lived in that one moment. It doesn't. Not even close.

Here's a fact that should bother you. In the 1990s, a trader named Tom Basso ran an experiment that Van Tharp later wrote up: enter the market on a coin flip. Literally random. No signal, no setup, no analysis. Then manage the trade with sensible exits and consistent position sizing. The system made money. Random entries, disciplined everything-else, and it still came out ahead over enough trades.

That result sounds like a party trick, but the lesson underneath it is the whole game. Your entry decides where you start. Your exit and your size decide how much you make and how much you lose. One of those two things is where nearly all your results actually come from, and it's not the one you obsess over.

What an entry actually controls

Think about it for a second. An entry sets your starting price and nothing else. The moment you're in, the trade's outcome depends entirely on what you do next: where you cut it, where you let it run, how big you sized it in the first place. A perfect entry on a position that's 10x too large still blows up. A mediocre entry on a well-sized position with a clean exit rule survives to trade another day.

Position sizing is the piece almost nobody masters. Get it wrong and it doesn't matter how good your reads are. A strategy that wins 50% of the time can still drain an account if the losers are sized bigger than the winners. Flip it around and a strategy that wins just 45% of the time can compound steadily, as long as each loss is small and controlled. Most professionals risk 1-2% of capital per trade for exactly this reason. The math protects them from their own worst days.

Exits are the other half people neglect. A good entry with no exit plan is just a guess with better timing. You need to know before you click where you're wrong and where you're done being right. Traders love to define the first one and completely ignore the second, which is why so many of them cut winners early and let losers run. That's the exact opposite of what the coin-flip experiment rewarded.

Why everyone fixates on entries anyway

Because the entry feels like the moment of control. It's the one decision that's fully yours, made in cold blood before any money is on the line. Exits happen while you're afraid or greedy. Sizing feels like boring homework. The entry is the fun part, so that's where attention goes, even though it's the part that matters least.

There's also a simpler reason. A clean entry gives you something to be right about. "I called the bottom" feels great. "I sized this correctly and my stop was well-placed" doesn't make for a good story, even though it's the thing keeping you solvent.

What to do instead

Run a test on your own trades. Pull your last 30 and ask a blunt question: how many blew up because the entry was genuinely bad, versus how many went wrong because the position was too big or you held past the point you should've folded? For most people it's not close. The entries were fine. The management was the leak.

You don't need a better crystal ball for entries. You need rules for the two decisions you're currently making on feel. Pick a fixed percentage of capital to risk per trade and never break it. Decide your exit before you enter, both the one that saves you and the one that pays you. Then let the entry be roughly right instead of perfectly right, because roughly right is all it ever needed to be.

This is the part of trading that's genuinely hard to do by hand, because the flinch shows up at exactly the wrong moment. Removing the human from the sizing and the exit is most of why systematic trading works at all.