Tuesday, 24 March 2020

💰真 期權教室💰 EP10 點樣做 Ratio Spread?

重溫返乜野係 Debit Put Spread 先

Long 一張價外 Put, 再另外 Short 一張更價外 Put

攞 700 騰訊做例子

1x Long Put TCH Mar $340 @ $22.93
1x Short Put TCH Mar $330 @19.33

付出 $ 360 期權金, 搏騰訊跌到 $330 或更低, 賺 (1000-360) = $640


好啦, 你用 Debit Put Spread 當然要付出期權金啦,
咁究竟有無方法唔付出期權金呢? 
其實係有方法既, 就係做  Ratio Spread

Ratio Spread 就係一張價外 Long Put, 再拖兩張三張或更多既更價外 Short Put
總知比例唔係  1:1, 可以係 1:2, 1:3, 2:3 都可以

咁實際點操作呢?

用返頭先騰訊個例子

今次我地
1x Long Put TCH Mar $330 @ $19.33
2x Short Put TCH Mar $300 @ $10.44

係 1拖2 既 Ratio Spread
D 個 Ratio Spread 你實際上仲有錢收 (2 x 10.44 - 19.33) x 100 = $155

結算時, 騰訊係$330 上面, 收 $155 期權金
$330 - $300, 開始 Long Put 入價, 騰訊$300時賺最多, 賺 $3000
$300 - $270, 開始 Short Put 入價, 由賺 $3000 慢慢跌到 $0
$270 變左打和點, $270 或更低, 等於單頭一張  Short Put $270, 跌一蚊輸一蚊


Ratio Spread 好處係可以0成本做到 Debit Spread, 今次例子個利潤最高係$3000
但個缺點係無左個保謢, 跌穿 $270 就等於一張 Short Put 入價

但你亦可以咁諗, 例如本身都想做有錢 Short Put, 諗住做一張 Short Put TCH Mar $270 @ $5.38
但而家知道有 Ratio Spread, 改為 1x Long Put $330 拖 2x Short Put $300
收少大約 $383 期權金, 去搏最多 $3000 利潤.  值唔值得咁做你地可以自己計算


又或者可以做 1x Long Put 拖 3x Short Put
1x Long Put TCH Mar $330 @ $19.33
3x Short Put TCH Mar $280 @ $7.5
D 個 Ratio Spread 你實際上仲有錢收 (3 x 7.5 - 19.33) x 100 = $317



$330 - $280 結算, 開始 Long Put 入價, 騰訊$280時賺最多, 賺 $5000
新打和點係$255, 但跌穿過$255, 等於兩張 Short Put 入價



總結: Ratio Spread 某程度上係我貪小便宜既做法, 又唔想付出期權金, 但又想有Debit Spread
最高利潤
但都留意返個風險, 始終個Ratio Spread 變左 0 成本, 最大風險會同 Short Put 相同



No comments:

Post a Comment