This article covers the four practical pillars: the 2% Rule, minimum Risk:Reward ratio, pyramiding, and portfolio max drawdown. All applied directly to a momentum scanner workflow.
The 2% Rule: the per-trade ceiling
The principle is straightforward: never risk more than 2% of your total capital on any single trade.
If your portfolio is $10,000, the maximum acceptable loss per trade is $200. If it's $50,000, that's $1,000.
How does that translate to position size? Three inputs:
- Entry price — the price you buy at
- Stop Loss — the price where you exit if the trade goes against you
- Maximum risk — 2% of your portfolio
The formula: position size = max risk / (entry - stop)
Concrete example: $10,000 portfolio, entry signal at $50, natural stop below EMA21 at $46.
- Maximum risk: $200 (2% of $10,000)
- Entry-to-stop distance: $4
- Maximum position: $200 / $4 = 50 shares → $2,500 deployed
The 2% isn't a universal law. With smaller portfolios (under $5,000) some investors use 1.5% for more error margin. With larger portfolios and high diversification, others go down to 0.5-1%. What matters isn't the exact percentage — it's consistency: applying it on every position, without exceptions.
Risk:Reward Ratio (R:R): validate before entering
Before opening any position, you need to know how much you make if it works versus how much you lose if it doesn't.
An R:R of 2:1 means your profit target is twice your risk. If the stop implies a $200 loss, the minimum target must be $400.
An R:R of 3:1 is more conservative — and more appropriate for momentum investing: for every $1 of risk, the target is $3. That margin lets you be wrong on more than half your positions and still be profitable overall.
How to calculate the target? Three practical methods:
- Technical resistance: the next level where price has historically found sellers
- Range extension: projecting the prior price range upward from the breakout point
- Stop multiple: if the stop is $4 from entry, the minimum 2:1 target is $8 away
If the calculated R:R doesn't reach at least 2:1, the trade isn't worth taking — even if the technical signal is valid. The setup may be right, but the entry price isn't right at that moment.
Pyramiding: adding to what's already working
Pyramiding means adding capital to a position that's already winning — never to one that's losing.
The logic: if the market is already proving you right (the stock moved up 5-8% from your entry), the trade has more continuation probability than it did when you first entered. Adding a second tranche at that point improves total return without proportionally increasing initial risk.
Basic pyramiding rules:
- The second addition is no more than 50% of the original size. If you entered with 50 shares, the second position is 25 at most.
- Total position risk can't exceed 2% of portfolio. When adding, recalculate combined risk.
- Never pyramid with the combined stop in a loss. When you adjust the total position stop, it must be at or above breakeven.
What pyramiding is not: averaging down. Adding capital to a losing position is one of the fastest ways to blow up an account. The logic of "it's cheaper now" ignores that the market can keep going in that direction.
Portfolio Max Drawdown: the global ceiling
Every individual trade has a stop. But the total portfolio also needs a maximum loss ceiling.
A practical way to define it:
- Monthly max drawdown: if the portfolio falls more than 10% in a month, pause trading that week and review what signals you were following and whether market context has changed.
- Annual max drawdown: if cumulative losses exceed 20% of starting capital for the year, review the complete strategy — not just individual trades.
This ceiling isn't rigidity. It's the signal that something in the process is failing, not just the market. A losing streak within those limits is normal in any momentum strategy. Exceeding those limits without a review is what turns normal drawdowns into losses that take years to recover.
How this applies to the scanner
The Shark Report Trades Panel applies the 2% logic and R:R to each signal and presents the suggested position size, Stop Loss, and Take Profit ready to review before confirming the position. Configure your capital in Settings and the system does the calculation for you.