Got assigned on call options

What’s the stock loan fee? If hard to borrow it could make sense.

A stock will only be hard to borrow for shorting not for buying. And if it's to really short a hard-to-borrow stock, it will be to buy a put and then exercise it. It wouldn't be to buy a call. And usually when the stock is really hard to borrow, the broker wouldn't even allow you to keep the short transaction open; it will demand you to buy back the stock to close the short right away so it'll be a much ado about nothing.
 
Actually it was a slightly cynical response from me (sorry!). Because you start with a completely wrong stock price (as parts of the day of exercise the option was considerable ITM) and put up a whole story after that.

But anyway, we leave it to the (lucky!) TS to filter out the useful parts from this topic...
 
I am short some NIO 18-strike call options (name at $18.7) expiring next week and today got assigned 15 before the big CPI print.

The strike is at $18 but the market price of the underlying is at $15 and somehow the OP got assigned. That's how I understood it.

Thanks for clarifying your sarcasm.
 
A stock will only be hard to borrow for shorting not for buying. And if it's to really short a hard-to-borrow stock, it will be to buy a put and then exercise it. It wouldn't be to buy a call. And usually when the stock is really hard to borrow, the broker wouldn't even allow you to keep the short transaction open; it will demand you to buy back the stock to close the short right away so it'll be a much ado about nothing.

you are wrong.

you will buy calls to hedge the buy in risk.
 
The strike is at $18 but the market price of the underlying is at $15 and somehow the OP got assigned. That's how I understood it.
No, underlier was around $19 that day!

(he even says "name at $18.70" but that is not relevant as exercise was done the previous day)
 
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The few times I have had early exercises that did not make mathematical sense have all occurred in periods of market sell off, I think there is some people who lose it during these times.
 
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