1. The cost price of a stock is the price after adding transaction fees. The purchase price of a stock is the price without adding transaction fees. The cost price of a stock = [(stock purchase price * quantity) + Transaction fee/quantity, stock cost price generally does not need to be calculated by investors, and will be displayed in stock positions.

2. The stock transaction fee includes commission, stamp duty and transfer fee. The commission charging standards of each securities company are different. The China Securities Regulatory Commission stipulates that the commission charging standard shall not exceed 3/1000 of the transaction amount, and the minimum for a single transaction is 5 yuan, charged in both directions for buying and selling, stamp duty is fixed, 1/1000 of the transaction amount is charged when selling, no charge is charged for buying, transfer fee is fixed, 0.2/10000 of the transaction amount is charged, and is charged in both directions.

1. The purchase price is the price of the stock at the time of transaction, and the cost price is the fee for the transaction evenly divided into the price cost, so the cost price will be higher than the transaction price. The handling fees for stock transactions include: Stamp duty: 1‰ of the transaction amount. The tax paid by investors to the finance and taxation department after the transaction is completed. Transfer fee: 0.02‰ of the transaction amount. Securities management fee: 0.002% of the transaction amount is charged in both directions.

2. Securities transaction handling fee: 0.00487% of the transaction amount is charged in both directions. Brokerage transaction commission: the maximum does not exceed 3‰ of the transaction amount. The minimum starting price is 5 yuan, and the commission for a single transaction less than 5 yuan will be charged at 5 yuan. Extended information: The handling fees for stock transactions are divided into "stage type" and "follow-up type".

1. Staged fee is charged based on the stock price and number of shares traded.

2. Price-following method: Handling fees are charged according to the transaction amount of the stock. Currently, the price-following method is mostly used in the world. After the Second World War, many countries adopted a minimum commission system for entrusted transaction fees in order to avoid excessive competition among securities companies and stabilize the operations of the securities industry.

The buying price and the cost price are calculated differently. The buying price is usually the transaction price. And the cost price is a price calculated by the software as a reference. The cost price depends on the cost price type. For example, the diluted position cost calculated by GF Securities will take into account the actual handling fees for buying and selling, but will not estimate the handling fees for selling the remaining positions. In addition, if the stock is sold at a profit, the cost of holding the position will be diluted, and if it is sold at a loss, the cost will be diluted.