why sell put assigned at market open instead of close

C
CLM2020
楼主 (文学城)

my sell puts order were assigned when market opened today, i thought it should be assigned at the time when the market close.

s
slow_quick
It is American option right? Buyer can exercise anytime
C
CLM2020
yes, TESLA option provided by fidelity
三心三意
Put can be assigned at "any" time before expiration
g
gladys
What are your strike prices? Do they expire today?
C
CLM2020
ANY time of the option expiration day or before the OE day?
C
CLM2020
the strike price is in the money and they expire today
三心三意
Any time before expiration (it is decided by who bought it)
g
gladys
I sold SPY puts and they have been in the money for a long t

time. My strike price was 565. 

今天我买回来了。

Being assigned 是不是跟option池子大小有关?

s
slow_quick
Fidelity does not "provide", you did
C
CLM2020
you are right, i provide put order
三心三意
被assign了是好事啊。如果不想要,可以立即卖出call,又捞一笔premium
C
CLM2020
I will keep them for supporting elon
g
gladys
你的讲法和胡杨好像
C
CLM2020
who is 胡杨? a celebrity?
G
Girlsmom92
Give you a case of why sometime you need exercise earlier. I

I have sold  LMT call 450 (expiration day is today) one month again and it goes up to 494 at one point and also at 480 this morning. I did not buy back my call since the option price gap is so big, also I didn't expect it will drop so much today. But the buyers of my option, if he excise the option and just sell the stock, it much easy for him and better for both of us. Now the buyer option is 0 now and I will take some loss (not naked call)

I also sold LMT naked put option before but the stock just dropped a lot and the buyer excised the option one week before option expiration day and he is right because the next week, LMT bounced back. 
 

when option is deeper in the money, spread is big, excise and sell is easier.

C
CLM2020
thank you for the link. certainly I am not the only one who
d
dancingpig
ITM当天早上被assign太正常了,如果deep ITM,早几个星期被assign都可能