We will not win them all; especially in the beginning. The point of position sizing is to:
Assure that we do not overexpose ourselves in one or several positions
We understand our maximum loss that we can take on any one trade
We learn how to scale our position as we grow our account
As you become more comfortable in trading and your strategy, you will improve your success rate, find better setups (risk:reward), have greater returns (ROI), and most importantly limit your losses on each trade.
Max loss and how to reduce your risk
Look to manage one to two stocks when you first start
As you gain more confidence in your stops and profit taking, you can increase the number of positions or the size of your position
See some of the major takeaways below and adjust based on your trading account proportionally
Risk:Reward lets us know that the trade is worthwhile
Total risk should never exceed 2% of your entire portfolio (What you are willing to lose on a trade)
eg. $10,000 x 2% = $200; this means you could lose 50 trades in a row before losing your entire portfolio
This gives you time to adjust your strategy to improve on each trade
eg. $500 x 2% = $10
Position Size tells us how much of our total capital we can invest in a single trade
You should keep your position size should never exceed 50% of your portfolio per trade
Maximum portfolio used on a trade is 25%
Each trade should never exceed 8% of your position size
eg. $2500 x 8% = $200; notice how 8% of the trade matches up with 2% of your portfolio
On average, you want to keep you losses to 5-6% per trade to protect your money
eg. $500 x 25% = $125; $125 x 8% = $10
On any given trade, you risk should never be more than amounts listed below
The left side represents your total account equity
Typically, you want to risk no more than 2% of your portfolio on any given trade, but smaller account traders often raise their limits to 5%.
5% means you can make 20 trades before your account is zero; which does not leave much room for error
Our position size is determined by our risk. (Max Loss/Trade Risk = # of shares we can purchase).
We will still respect the 25% max recommend positioning/50% cap on any investment (though it should be less)
Our risk should still be capped at 2% of our capital
Let's assume our capital is $1,600 in the examples below.
Example
$1,600 x 25% = $400; $1,600 x 2% = $32 total risk
Stock price = $75, Stop Loss $65, trade Risk $10
If we cap out at $32, we can purchase 3 shares ($32/$10 = 3 shares)
We would spend 3 shares x $75 = $225
Though our max position size is $400 (25%), our risk dictates that we can only purchase 3 shares based on a $10 risk
This is why we want to find entries that can limit our risk and increase the number of shares we can purchase
Example 2
$1,600 x 25% = $400; $1,600 x 2% = $32 total risk
Stock price = $50, Stop Loss $46, Trade Risk = $5 per share
If we wanted to cap out each loss at $32, we can purchase 6 shares ($32/$5 risk = 6 shares)
We would spend 6 shares x $50 =$300
Example 3
$1,600 x 25% = $400; $1,600 x 2% = $32 total risk
Stock prices = $1,000, Stop Loss $1,060, Trade Risk $32
You could not enter this trade since the maximum amount you can use for a position is $800 ($1,600/2)
Determine the following using the information below.
Exercise 1
$2,500 total capital
Max trade based on capital (25%)
Maximum risk per trade (2%)
How many shares could you purchase if the Stock price = $30, Stop Loss $28, trade Risk $2
What is the risk:reward ratio if you are targeting $35?
Is the trade worth entering?
Exercise 2
$3,800 total capital
Max trade based on capital (25%)
Maximum risk per trade (2%)
How many shares could you purchase if the Stock price = $45, Stop Loss $41, trade Risk $4
What is the risk:reward ratio if you are targeting $49?
Is the trade worth entering?
Exercise 3
$4,700 total capital
Max trade based on capital (25%)
Maximum risk per trade (2%)
How many shares could you purchase if the Stock price = $63, Stop Loss $56, trade Risk $7
What is the risk:reward ratio if you are targeting $80?
Is the trade worth entering?