選擇權賣方如築牆，籌碼如磗塊，用紀律去適應不同的環境

Jim

I'd like to share my trading on Friday.
I always trade around delta -0.1.
I laid bricks gradually there with the front spread option  in Apr, MOP05-SP92BP93, the ratio was 2:1 before Last Friday and it is 4:1 now, very risky.

The puts didn't rise much before noon on Friday, and then I sold more puts, I thought I was able to buy some protections later on that day.

Surprisingly the put prices took off, it was almost 2 times higher in the last hour.
I revised my price many times but still couldn't make the deals.

I thought I was disciplined, however I didn't understand how well I was in ordinary trading days.