衍生品投教百科丨什么是开仓和平仓？期权有哪些买卖类型？

Group 1 - The article explains the concepts of opening and closing positions in options trading, where opening a position involves buying or selling options to establish a position, and closing a position involves reversing the initial action to eliminate any rights or obligations [2]. - It defines a long position as a rights position established by buying options, while a short position is an obligation position established by selling options [2]. - Closing a position means that the investor no longer holds any rights or obligations after executing the reverse transaction [2]. Group 2 - The article outlines six basic types of options trading instructions on the Shanghai Stock Exchange: buy to open, sell to close, sell to open, buy to close, covered call writing, and covered call closing [3]. - Buying to open involves paying a premium to increase the rights position [4]. - Selling to close allows the investor to receive a premium and reduce the rights position [5]. - Selling to open generates a premium and increases the obligation position, requiring margin payment at the time of opening [5]. - Buying to close involves paying a premium to reduce the obligation position and reclaiming the corresponding margin [5]. - Covered call writing locks in the underlying securities as delivery securities while selling call options [6]. - Covered call closing reduces the obligation position and releases the underlying securities through unlocking instructions [6].