limit buy是限价买入，当价格等于这个价格的时候才买入，对吗？
cover position是什么意思？
题中没有说Gail要short shares，只是说等价格到98的时候再买一些，没有提到要止损的意思，为什么是stop buy order呢？
问题如下图：
选项：
A. 
B. 
C. 
解释：
maggie_品职助教 · 2018年11月14日
首先，我们现在区分下stop by 和limit buy。请先明确stop order是一个有效性指令，而limit order是限定成交价的指令，它们从源头上就不一样。这样说可能还是太抽象我们举个例子，我们都以买入（buy）为例，假如当前股票价格为$10 ,发布stop buy @$12指令也就意味着股票价格涨到$12我才开始在市场买入，说明价格只有涨到$12该指令才生效，不到$12就不生效，这里就是在解释何为有效性指令。那limit buy呢？同样的例子，如果发布limit buy @$12，说明的是你购买这只股票最多愿意出的价格（限价）是$12，而当前股价为$10，低于你的限价，那这个指令一发出就会马上得到成交。所以不难看出对于买入指令来说stop order往往报的价格会高于当前的价格（止损指令），而limit order会报的比当前低（低买高卖嘛，应该不会有人会在市场本来$10每股时，愿意以更高的价格买入吧）。这就是它们之间的区别。
有了这个理解再来看这道题应该就清晰很多了，80低于95，所以A同学下的是limit buy。而98高于86，G同学下的是stop buy指令。你可以看一下，如果G同学下一个limit buy98，说明G最高愿意以98元买股票，那么当前股价只有86，该指令一旦下达就会成交，就不满足以98这个价格成交的条件了。
此外，cover position指的是你在卖空借来的股票之后，总有一天需要把股票再买回来并归还（卖掉并归还的意思就是cover position）。相当于填补上头寸的意思。
加油。
NO.PZ2015122801000057问题如下Astriis short 400 shares of Astoanthe stock's current priis $95 per share. She wants to cover her short position if the prifalls to $80. Gail h250 shares of Bstock, whiis trang $86 per share, anhe nee to buy another 150 shares if the pririses to $98. Whorrs shoulAstrianGail establish to meet their targets?A.Astriestablishes stop buy $80 anGail establishes limit buy $98.B.Astriestablishes stop buy $95 anGail establishes stop buy $86.C.Astriestablishes limit buy $80 anGail establishes stop buy $98. C is correct.Astrishoulestablish a buy orr with a limit 80 because she wants to buy stoto close out her short position if she cbuy it 80(or less). Gail shoulestablish a stop buy 98 because this orr will executeonly if the stopririses to 98.C是正确的。本题考察的是股票交易术语的区别。Stop buy(停止买入) 和 limit buy（限价买入）的最大区别是前者是一个有效性指令，而后者是一个限定成交价的指令. Stop buy是大于等于某股价成交；limit buy是小于等于某股价成交。Stop buy意味着只要比该指令定的价格高，就要买入。在本题中，Astri空股票时的市场价格是95美金，如果用stop buy $80指令，由于市场价远高于80，指令会立即生效，则Astri刻被平仓，就达不到要的效果了。如果用limit buy，则意味这只有到达80这个股价（小于等于），才会平仓，这才满足Astri要求。所以A，B都是错误的。Limit buy同理，如果用limit buy 来实现Gail的愿望，当前股价86美金，那成交的就会是84美金到98美金之间的单，显然不符合Gail的要求。而stop buy是大于98才成交。C正确。 请问84美金（解析）是哪里来的数字？谢谢
NO.PZ2015122801000057问题如下Astriis short 400 shares of Astoanthe stock's current priis $95 per share. She wants to cover her short position if the prifalls to $80. Gail h250 shares of Bstock, whiis trang $86 per share, anhe nee to buy another 150 shares if the pririses to $98. Whorrs shoulAstrianGail establish to meet their targets?A.Astriestablishes stop buy $80 anGail establishes limit buy $98.B.Astriestablishes stop buy $95 anGail establishes stop buy $86.C.Astriestablishes limit buy $80 anGail establishes stop buy $98. C is correct.Astrishoulestablish a buy orr with a limit 80 because she wants to buy stoto close out her short position if she cbuy it 80(or less). Gail shoulestablish a stop buy 98 because this orr will executeonly if the stopririses to 98.C是正确的。本题考察的是股票交易术语的区别。Stop buy(停止买入) 和 limit buy（限价买入）的最大区别是前者是一个有效性指令，而后者是一个限定成交价的指令. Stop buy是大于等于某股价成交；limit buy是小于等于某股价成交。Stop buy意味着只要比该指令定的价格高，就要买入。在本题中，Astri空股票时的市场价格是95美金，如果用stop buy $80指令，由于市场价远高于80，指令会立即生效，则Astri刻被平仓，就达不到要的效果了。如果用limit buy，则意味这只有到达80这个股价（小于等于），才会平仓，这才满足Astri要求。所以A，B都是错误的。Limit buy同理，如果用limit buy 来实现Gail的愿望，当前股价86美金，那成交的就会是84美金到98美金之间的单，显然不符合Gail的要求。而stop buy是大于98才成交。C正确。 老师好 一直搞不清楚stop 与long. Short 以及put,call 结合的意思能一块一下么
NO.PZ2015122801000057问题如下Astriis short 400 shares of Astoanthe stock's current priis $95 per share. She wants to cover her short position if the prifalls to $80. Gail h250 shares of Bstock, whiis trang $86 per share, anhe nee to buy another 150 shares if the pririses to $98. Whorrs shoulAstrianGail establish to meet their targets?A.Astriestablishes stop buy $80 anGail establishes limit buy $98.B.Astriestablishes stop buy $95 anGail establishes stop buy $86.C.Astriestablishes limit buy $80 anGail establishes stop buy $98. C is correct.Astrishoulestablish a buy orr with a limit 80 because she wants to buy stoto close out her short position if she cbuy it 80(or less). Gail shoulestablish a stop buy 98 because this orr will executeonly if the stopririses to 98.C是正确的。本题考察的是股票交易术语的区别。Stop buy(停止买入) 和 limit buy（限价买入）的最大区别是前者是一个有效性指令，而后者是一个限定成交价的指令. Stop buy是大于等于某股价成交；limit buy是小于等于某股价成交。Stop buy意味着只要比该指令定的价格高，就要买入。在本题中，Astri空股票时的市场价格是95美金，如果用stop buy $80指令，由于市场价远高于80，指令会立即生效，则Astri刻被平仓，就达不到要的效果了。如果用limit buy，则意味这只有到达80这个股价（小于等于），才会平仓，这才满足Astri要求。所以A，B都是错误的。Limit buy同理，如果用limit buy 来实现Gail的愿望，当前股价86美金，那成交的就会是84美金到98美金之间的单，显然不符合Gail的要求。而stop buy是大于98才成交。C正确。 在本题中使用stop sell 是否可以达到limit orr to sell 同样效果?
NO.PZ2015122801000057 问题如下 Astriis short 400 shares of Astoanthe stock's current priis $95 per share. She wants to cover her short position if the prifalls to $80. Gail h250 shares of Bstock, whiis trang $86 per share, anhe nee to buy another 150 shares if the pririses to $98. Whorrs shoulAstrianGail establish to meet their targets? A.Astriestablishes stop buy $80 anGail establishes limit buy $98. B.Astriestablishes stop buy $95 anGail establishes stop buy $86. C.Astriestablishes limit buy $80 anGail establishes stop buy $98. C is correct.Astrishoulestablish a buy orr with a limit 80 because she wants to buy stoto close out her short position if she cbuy it 80(or less). Gail shoulestablish a stop buy 98 because this orr will executeonly if the stopririses to 98.C是正确的。本题考察的是股票交易术语的区别。Stop buy(停止买入) 和 limit buy（限价买入）的最大区别是前者是一个有效性指令，而后者是一个限定成交价的指令. Stop buy是大于等于某股价成交；limit buy是小于等于某股价成交。Stop buy意味着只要比该指令定的价格高，就要买入。在本题中，Astri空股票时的市场价格是95美金，如果用stop buy $80指令，由于市场价远高于80，指令会立即生效，则Astri刻被平仓，就达不到要的效果了。如果用limit buy，则意味这只有到达80这个股价（小于等于），才会平仓，这才满足Astri要求。所以A，B都是错误的。Limit buy同理，如果用limit buy 来实现Gail的愿望，当前股价86美金，那成交的就会是84美金到98美金之间的单，显然不符合Gail的要求。而stop buy是大于98才成交。C正确。 如题
NO.PZ2015122801000057 问题如下 Astriis short 400 shares of Astoanthe stock's current priis $95 per share. She wants to cover her short position if the prifalls to $80. Gail h250 shares of Bstock, whiis trang $86 per share, anhe nee to buy another 150 shares if the pririses to $98. Whorrs shoulAstrianGail establish to meet their targets? A.Astriestablishes stop buy $80 anGail establishes limit buy $98. B.Astriestablishes stop buy $95 anGail establishes stop buy $86. C.Astriestablishes limit buy $80 anGail establishes stop buy $98. C is correct.Astrishoulestablish a buy orr with a limit 80 because she wants to buy stoto close out her short position if she cbuy it 80(or less). Gail shoulestablish a stop buy 98 because this orr will executeonly if the stopririses to 98.C是正确的。本题考察的是股票交易术语的区别。Stop buy(停止买入) 和 limit buy（限价买入）的最大区别是前者是一个有效性指令，而后者是一个限定成交价的指令. Stop buy是大于等于某股价成交；limit buy是小于等于某股价成交。Stop buy意味着只要比该指令定的价格高，就要买入。在本题中，Astri空股票时的市场价格是95美金，如果用stop buy $80指令，由于市场价远高于80，指令会立即生效，则Astri刻被平仓，就达不到要的效果了。如果用limit buy，则意味这只有到达80这个股价（小于等于），才会平仓，这才满足Astri要求。所以A，B都是错误的。Limit buy同理，如果用limit buy 来实现Gail的愿望，当前股价86美金，那成交的就会是84美金到98美金之间的单，显然不符合Gail的要求。而stop buy是大于98才成交。C正确。 第一个人，他做空股票，那么不是应该在股票价格上涨到一定的点，止损买入才合算吗，股票价格越低对他不是越好吗，为什么还要设置下限？第二个人，股票在涨，他想额外买一些，不也是应该有个上限吗？