How is the average stock price calculated?

Add up what every buy cost (shares times price for each lot) and divide by the total number of shares. It is a weighted average, so a large buy at a low price pulls the average down more than a small one. Fees can be included by adding them to the cost of the lot they belong to.

Does averaging down work?

It lowers the price at which the position is flat, which feels like progress, and it also puts more money into a stock that has already gone against you. Whether that is wise depends on why the stock fell and on how much of the account ends up in one name. The calculator shows the new average and the new position size; the second number is the one most people do not look at.

What is the break-even price after averaging down?

The new average cost. If the stock gets back there you are flat before fees. The calculator also shows how far the stock has to rise from the current price to reach it, which is the real test of the plan.

Can I use this for crypto or ETFs?

Yes. The math is the same for anything bought in lots at different prices: shares, coins or fund units. Enter fractional quantities as decimals.

Free Tool

Stock average calculator

Average cost = total spent across all buys / total shares. Buy 100 at $50 and 100 at $40 and your average is $45 on 200 shares. Add the current price to see the gain or loss, and try one more buy to see the new average and how far the stock must rise to break even.

Your buys

SharesPrice per share

Current price$For the position's value, gain or loss, and the distance to break-even.

What if I buy more

More sharesAt price$

Result

Average cost $45.00

200 shares across 2 buys, $9,000.00 invested. At $38.00 the position is worth $7,600.00, down $1,400.00.

Total shares: 200
Total invested: $9,000.00
Average cost per share: $45.00
Price rise needed to break even: 18.4%
After buying 100 more at $38.00: $42.67 average on 300 shares
Then invested in this one stock: $12,800.00
Then rise needed to break even: 12.3%

The extra buy moves break-even from $45.00 to $42.67 and the money in this stock from $9,000.00 to $12,800.00. The first number is why people average down. The second is the risk they take on to do it.

How the average works

Every buy is a lot with a share count and a price. The average is the total cost of all lots divided by the total shares, so it leans toward whichever lots carried the most money. It is the price at which the whole position is flat before fees, which makes it the single number to watch once you own a stock in several pieces.

Formula

total cost = sum of (shares x price) for every buy

average cost = total cost / total shares

rise to break even = average / current price - 1

new average after a buy = (total cost + more shares x price) / (total shares + more shares)

What averaging down actually does

Two things at once. It lowers the break-even price, which is the part everyone sees. And it raises the amount of money in a stock that has already fallen, which is the part the calculator puts on the next line. A 100-share position at $50 that is averaged down with 100 more at $40 goes from needing a 32% rise to needing an 18% rise, and from $5,000 at risk to $9,000. If the reason the stock fell is still there, the second number is what matters. Our drawdown calculator shows why holes get harder to climb out of as they deepen.

The alternative is to decide the size and the stop before the first buy, with the position size calculator, so a falling stock triggers a planned exit instead of a second purchase.

Done for you

The auto-trader never averages down. It sizes every trade from its own stop.

Each JorgAI trade is sized from your risk rule and the distance to its stop-loss, sent to your broker with the stop and target attached, and closed by those rules. A losing position gets exited, not doubled. Set the rules once; they hold on the days you would not.

Set up your rules Position sizing: the skill that separates traders who last

Free to start. A two-minute setup quiz builds your rules. Your money stays in your own brokerage account.

Questions people ask

How is the average stock price calculated?: Add up what every buy cost (shares times price for each lot) and divide by the total number of shares. It is a weighted average, so a large buy at a low price pulls the average down more than a small one. Fees can be included by adding them to the cost of the lot they belong to.
Does averaging down work?: It lowers the price at which the position is flat, which feels like progress, and it also puts more money into a stock that has already gone against you. Whether that is wise depends on why the stock fell and on how much of the account ends up in one name. The calculator shows the new average and the new position size; the second number is the one most people do not look at.
What is the break-even price after averaging down?: The new average cost. If the stock gets back there you are flat before fees. The calculator also shows how far the stock has to rise from the current price to reach it, which is the real test of the plan.
Can I use this for crypto or ETFs?: Yes. The math is the same for anything bought in lots at different prices: shares, coins or fund units. Enter fractional quantities as decimals.

Keep reading

These tools are for education. They do not know your account, your taxes or your broker's exact fees, and nothing here is investment advice. Trading involves risk of loss.

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