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How are put warrants and stock index futures calculated? What is their price limit?
The fluctuation of warrants is limited to the fluctuating absolute price, and the calculation formula is as follows: the fluctuating price of warrants = the closing price of warrants the day before (the fluctuating price of underlying securities-the closing price of underlying securities the day before) × 125%× exercise ratio.

For example, the one-day closing price of a company's warrants is 4 yuan, and the closing price of a company's shares is 16 yuan. The next day, the stock of Company A can go up or down by 10%, that is, 1.6 yuan; The range that warrants can rise or fall the next day is (17.6-16) ×125% = 2 yuan, and the conversion rate can be as high as 50%.

The daily fluctuation of stock index futures design is based on the fluctuation limit of spot market stocks 10%, and the "fuse" system is introduced (fuse 10 minute when the fluctuation reaches 6%);