1. The first transaction is a special type of P, M, X or Y, and the opening price ≠ the first transaction.
2. When the first transaction is a U-shaped transaction or an ordinary transaction, the opening price = the first transaction.
For the description of each type, please refer to Ticks Data & Trade Statistics
[About the reasons why special types are not counted]
Disk X and Disk P are not matched by exchanges, and the trading time is uncertain. The exchange gives the time to submit the order, not the time for the transaction. The peers have accumulated to a point K according to this time, which does not reflect the volume and price situation at that minute.