Why This Matters More Than Strategy

A 90% win rate strategy with bad position sizing loses money. A 55% win rate strategy with good position sizing compounds.

This is not an opinion. It is arithmetic. The drawdown distribution of any system is dominated by sizing decisions, not by the entry logic. Most retail traders spend 95% of their time optimizing entries and 5% on sizing. The math says it should be the other way around.

The 1% Rule

The conventional answer is "risk 1% of account per trade." This is approximately correct for most retail traders, but the reasoning is rarely taught.

The 1% rule is derived from two constraints:

Drawdown survival. A 50% drawdown requires a 100% return to recover. A 20% drawdown only requires 25%. Risk per trade caps maximum sequential drawdown.
Psychological tolerance. Most traders cannot execute their system after a 30%+ drawdown. They start to skip signals, reduce size irrationally, or quit. Sizing has to keep drawdown inside the psychological tolerance.

At 1% risk per trade, a 10-trade losing streak (rare but possible) costs ~10% of account. A 20-trade losing streak (very rare) costs ~18%. Both are recoverable both arithmetically and psychologically.

What "1% Risk" Actually Means

It does *not* mean "buy $100 worth on a $10,000 account." That is position size, not risk.

Risk is the dollar amount you lose if your stop hits.

Math: risk_per_trade = (entry_price - stop_price) × position_size

For a $10,000 account at 1% risk:

Risk per trade: $100
BTC entry: $80,000
Stop: $78,000
Distance to stop: $2,000 per coin
Position size: $100 / $2,000 = 0.05 BTC = $4,000 notional

Notice: the position size (0.05 BTC = $4,000) is not 1% of the account. It is *40%* of the account. The risk is 1%. These are different numbers.

The Adjustment Most Traders Skip

Risk should scale to the system's expectancy, not be fixed at 1% forever.

If you have rigorous backtest evidence that your system delivers a 70% win rate at 1.5R reward-to-risk, the optimal Kelly fraction is approximately 50% of your bankroll per trade. That is mathematically optimal for compounding *and* recipes for ruin in practice (because the backtest is wrong by 5–15%, which under Kelly translates to certain ruin).

The pragmatic rule: estimate your Kelly fraction, then size at *one quarter* of it. This is "fractional Kelly" and is what most professional traders actually use.

For a 70% win rate at 1.5R, fractional Kelly is roughly 12–15% of bankroll per trade. Most retail traders should round this down further to 2–4% as their system confidence grows. Going from 1% to 3% is a real upgrade. Going to 10% is a route to bankruptcy.

When to Reduce Size

Three conditions where every professional reduces size:

After consecutive losses. Three losses in a row → cut size by half until you book a win. This protects against being wrong about the regime.
Lower-confidence setups. Not every signal is equal. The "okay" setups should be 50% of normal size.
High-volatility regimes. When VIX or BTC realized vol spikes, your standard stop distance gets blown through more often. Reduce size to keep the dollar risk constant.

The Position Sizing Calculator

You should have one. A spreadsheet or website. Inputs:

Account size
Risk per trade (%)
Entry price
Stop price

Output: position size in coins/shares/contracts.

Calculate this *before every trade*. Not approximately. Exactly. The 30 seconds you spend on the calculator is the difference between professional execution and retail amateur.

What Wind Indicator Does Not Do

Wind Indicator V1.6 gives you an entry signal. It does not size your trade. It cannot — sizing depends on your account size, your risk tolerance, and your other open positions, none of which the indicator knows.

The expectation is: signal arrives, you compute position size from your stop distance and account, you execute. The indicator handles the *what to trade*. You handle the *how much*. Both have to work for the system to work.

The Hard Truth

Most traders who blow up did not have a bad strategy. They had a fine strategy and bad sizing. They risked 5% on a "high-confidence" setup, lost three in a row, were down 15%, started panic-sizing, lost another 20%, and quit.

Position sizing is the boring fundamental that separates traders who survive from traders who do not. There is no glamour in it. There is also no substitute.

Trade your signals with discipline → Start the Wind Indicator trial