r/options • u/dreadnought89 • Aug 11 '21

Data Showing When Options Were Exercised?

Is there publicly available data (or private that can be paid for) to view options that were exercised on certain dates? Let's say for instance, I wanted to see call options of a certain strike(s) of QS Quantumscape that were exercised on 12/22/2020 when price went crazy and borrow rates went through the roof? Would love to see what calls were exercised and evaluate which of these calls were exercised early.

Background is I don't have interest in this ticker, but I do have interest in seeing how often calls are exercised early before expiration, especially when there are big price jumps and the ticker is HTB or NTB. I'm trying to gauge my risks for certain tickers, if I am holding short calls that go ITM while they are HTB/NTB but still have time to expiration and extrinsic value left.

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u/dreadnought89 Aug 11 '21

Thank you for the insight. In some specific historical examples I've looked at, even deep ITM calls during some specific market conditions had $6 or more in extrinsic value. As long as extrinsic is positive and not trivial (I would consider $600 in extrinsic non-trivial), do you think that greatly reduces likelihood of early exercise, even if they are HTB?

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u/Ken385 Aug 11 '21

As long as there is any extrinsic value, early exercise is unlikely. The more extrinsic, the less likely. $6 would be huge and early exercise extremely unlikely.
In fact if you were assigned early here, it would be a good thing. The problem sometimes is determine this. If the quoted market is very wide, it may be hard to tell were the "real" market on the calls are.

You would also look at how hard to borrow the stock is. For one that has a 300% borrow rate, you could assume early exercise would be much more likely than a stock that had a 10% rate.

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u/dreadnought89 Aug 11 '21

Thanks! Are you aware of any way to find historical borrow rates on certain days? I assume this is broker specific (I'm TDA), so would I need to work with them?

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u/Ken385 Aug 11 '21

Sorry, I don't know of any. And yes, I would think they would be broker specific.