不太懂為什麼當賣方是用來避險用的 - 期貨
![Lydia avatar](/img/woman.jpg)
By Lydia
at 2011-08-20T11:40
at 2011-08-20T11:40
Table of Contents
※ 引述《qoo159 (陳冠瀚)》之銘言:
: ※ 引述《holymars ()》之銘言:
: 這好像錯呢
: 只空期貨可以賺1200
: 空期貨+sp=1110
: 其他也都當成小台的算法
: 還是我誤會了
: 這邊標題避險應該不會1:1吧
: 另外c在大跌的情況v也會噴
: 8/8、8/9,c就跌不下去
: 至於sp+空期貨
: 況且現在離結算還這麼久
: 走出的盤勢誰也不知道
: 抱單的心境也要考慮
: 只能說各種策略都有對應的吃香盤勢
只看標題, 我只想到 delta hedge.
當 OP 的 implied vol 很高的時候, 就會想要 Short vega.
但是只做 short op 又怕被大盤波動影響 (delta)
所以要進行 delta hedge
手法就是 SP+ 空小台. 或是 SC+ 多小台
重點在於吃掉 vega. 只要大盤不再狂崩, 那 VOL縮小是必然的.
強者我朋友在 8/8 就碎碎念要 short vega.
可惜他當下只有做模擬單作 SC + SP, 實際下單是等到 8/10 才下的.
我不知道他的模擬是哪個履約價的, 不過 8/8 模擬單, 隔天雖然還是賠錢
8/12 就獲利 20萬了. (大約要拿 80萬的保證金去下單)
當然, 我也只有聽他講講, 雖然也知道 VOL 很高,
但是就是沒有勇氣去做賣方.
--
: ※ 引述《holymars ()》之銘言:
: 這好像錯呢
: 只空期貨可以賺1200
: 空期貨+sp=1110
: 其他也都當成小台的算法
: 還是我誤會了
: 這邊標題避險應該不會1:1吧
: 另外c在大跌的情況v也會噴
: 8/8、8/9,c就跌不下去
: 至於sp+空期貨
: 況且現在離結算還這麼久
: 走出的盤勢誰也不知道
: 抱單的心境也要考慮
: 只能說各種策略都有對應的吃香盤勢
只看標題, 我只想到 delta hedge.
當 OP 的 implied vol 很高的時候, 就會想要 Short vega.
但是只做 short op 又怕被大盤波動影響 (delta)
所以要進行 delta hedge
手法就是 SP+ 空小台. 或是 SC+ 多小台
重點在於吃掉 vega. 只要大盤不再狂崩, 那 VOL縮小是必然的.
強者我朋友在 8/8 就碎碎念要 short vega.
可惜他當下只有做模擬單作 SC + SP, 實際下單是等到 8/10 才下的.
我不知道他的模擬是哪個履約價的, 不過 8/8 模擬單, 隔天雖然還是賠錢
8/12 就獲利 20萬了. (大約要拿 80萬的保證金去下單)
當然, 我也只有聽他講講, 雖然也知道 VOL 很高,
但是就是沒有勇氣去做賣方.
--
Tags:
期貨
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