選擇權從成交量來觀察,7 月份買權集中在8000 點,賣權集中在7700 點。未平倉量部份,買權未平倉量大量區仍在8000 點,而賣權大量區則在7800 點。全月份未平倉量put/call ratio 由1升至1.06,7 月買權平均隱含波動率由12.22%降至11.32%,賣權平均隱含波動率由14.4%降至13.81%,買賣權同步降,操作上建議仍於7800-8200 點建立買權多頭價差因應。
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