Congratulation if you follow my earlier trade here.
If you are taking the 3rd suggestion to open the position on 7 May after my post on 6 May, you should be buying NFLX 320 15 Jun 2018 call contract at around $15 (If you follow my blog, you would know that I always suggest to buy or sell the options contract at mid price; mid price for this trade should be $14.85 but let’s take $15 instead in this case).
On 15 Jun 2018 (also the contract expiry date), the NFLX 320 15 Jun 2018 call contract price shot up to around $68.
Profit per contract = $5300 ($6800 – $1500)
Return on margin = 353.33% ($5300 / $1500 * 100%). This return is achieved within 39 calendar days.