Haitong Lecture
認股證攻略 第二節

選擇認股證時應注意

上集同大家介紹了窩輪的價格由內在值及時間值組成,所以選擇窩輪時,投資者要按自己可接受的風險水平,選擇合適的行使價及到期日等條款。我們會從升市及跌市同大家講解。

升市

預期股市短期急升-認購證(Call輪)

投資者若預期股市短期急升,可以揀一些較短期的Call輪。由於時間不多,行使價不可以太遠,輕微價外或貼價認購證就適合捕捉正股短期升勢,槓桿相對較高。

跌市

預期股市向下-認沽證(Put 輪)

跌市的時間一般較短且快,故持有認沽證時間不宜過長。投資者可持有較短期的輕微價外或貼價Put 輪,以相對高的槓桿捕捉股市跌勢。

引伸波幅

另外波幅愈低代表該輪證愈便宜。同時,投資者要留意該輪證波幅的穩定性。不過要留意,不是低引伸波幅就代表好,有時它們的買賣差價可能較闊或波動。

跟住同大家講下認股證的結算方法

窩輪結算方法

窩輪的最後交易日,即買入或沽出窩輪的最後限期,是到期日前四個交易日。假如該窩輪12月8日到期,最後交易日就在四個交易日前,即在12月2日星期五,因為星期六、日及公眾假期不計算在內。

指數窩輪的結算價是以即月期指到期日當日,恒指每五分鐘平均價(EAS) 作準。

至於個股窩輪的結算價就以到期日前五個交易日,相關正股的平均收市價計算。

日期 1/12
(四)
2/12
(五)
3/12
(六)
4/12
(日)
5/12
(一)
6/12
(二)
7/12
(三)
8/12
(四)
    最後
交易日
          認股證
到期日
股份
收市價
$12.65 $12.35     $12.35     $13.05 $12.85  

結算價:認股證到期日前5個交易日的平均收市價
      =(12.65+12.35+12.35+13.05+12.85)/ 5
      = $12.65

剛剛計算出結算價是12.65,假如該窩輪行使價是12.3,兌換比率是10,每手買賣單位是10000,我地就可以再用呢條算式計算出認購證的現金價值

結算價12.65減行使價12.3除兌換比率10,乘每手買賣單位10000,現金價值即係等於350蚊。

結算價: $12.65
行使價:$12.3
兌換比率:10
每手買賣單位:10000

認購證行使價$12.3,兌換比率10,每手買賣單位 10000
認購證現金價值:(結算價-行使價) /兌換比率 x每手買賣單位

      =(12.65-12.3)/10 X 10000
      = $350

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