Why is my average buy price on Pluang different from my own calculation?
Your average buy price on Pluang usually differs from a hand calculation because the two use different inputs, not because the app has miscalculated. Pluang takes a weighted average across all your purchases of the asset, so every buy counts in proportion to its size; a simple average of the prices you paid gives a different result. A few events also recalculate the average without a purchase you might remember: a stock split, which adjusts the average proportionally, and Crypto Staking rewards, which are added to your holdings at their value when they are paid out. For US Stocks, the average is in US dollars, so a calculation based on the Rupiah you paid includes the exchange rate as well. Selling doesn't change the average of the units you keep. Finally, a hand calculation may treat fees differently from the app, so work from the purchase amounts in your transaction history when you check the figure.
| Symptom / Condition | Possible Cause | Solution |
|---|---|---|
| Your figure is a simple average of the prices you paid | Pluang uses a weighted average, so larger purchases count for more | Recalculate as total amount paid ÷ total units bought |
| The average changed although you didn't buy anything | Crypto Staking rewards were distributed and added at their payout value, or a stock split took effect | Check for a recent staking distribution or corporate action on that asset |
| The average for a US stock doesn't match your Rupiah calculation | The average is calculated in USD; your Rupiah figure also includes the exchange rate | Work in USD, using the dollar amounts of each purchase |
| You expected the average to change after selling | Selling reduces your units but leaves the average of the units you keep unchanged | No action needed; the result of the sale appears in realised profit or loss |
| You left out an earlier purchase | The average covers every purchase of that asset, including older ones | Include every buy from your transaction history, or request the Transaction History Report for purchases older than 6 months |
| The difference is small and matches the fees | Your calculation includes or excludes fees differently from the app | Use the amounts recorded for each purchase in your transaction history rather than the prices you remember |
| You hold the same stock with and without leverage | Each is shown with its own average buy price | Compare your calculation with the matching position, leveraged or non-leveraged |
If the issue persists:
If you have included every purchase and allowed for the points above and the average still doesn't match, contact Pluang Care via live chat in the app, email tanya@pluang.com, or call (021) 8063 0065 (Monday–Friday, 09:00–18:00 WIB). Include the asset, your calculation, and the dates and amounts of the purchases you used.
Related questions:
Q: What is the difference between a weighted average and a simple average?
A simple average adds up the prices and divides by the number of purchases, so every buy counts equally regardless of size. A weighted average divides the total amount you paid by the total units you bought, so a large purchase moves it more than a small one. For example, 10 units at Rp1,000 and 30 units at Rp800 give a simple average of Rp900, but a weighted average of Rp850. Pluang uses the weighted average.
Q: Why did my average price change after a staking payout?
Because distributed staking rewards are added to your holdings at their value on the day they are paid, and your weighted average is recalculated across all the units you now hold. If the payout price was above your old average, the average rises slightly; if it was below, it falls slightly. The reward's payout value is counted in realised profit and loss at the same time, so it isn't counted twice.
Q: Why did my average price drop sharply after a stock split?
Because a split gives you more shares, and Pluang recalculates your average purchase price automatically on the effective date so the total cost of your position stays the same. In a 2-for-1 split, for example, you hold twice as many shares at half the previous average. Your position is worth the same immediately after the split; only the number of shares and the price per share have changed.
Q: Where can I find all the purchases that make up my average?
Your transaction history in the Pluang app shows the last 6 months of completed transactions. For older purchases, request the Transaction History Report, which lists all your completed transactions and is sent to your registered email; you can request up to 10 reports a day. Using the recorded purchase amounts, rather than the prices you remember, is the most reliable way to reproduce the average yourself.