The faster the rise..., page-119

Still don't get it do you here is what you said. Just notice that you said Presumably So maybe that gives you an out.

presumably there will be a similar sized loss if it goes up in price by the same amount?

I do not need to know a thing about what he holds to know the price will change a different amount in absolute value if stock goes up $10. Or Down $10 That is one of the pluses of options. Obviously, you did not look at a chart of options like I suggested, before Talking. In case you do not know where to look Here is a chart of Tesla Options Expiring on Jan 14. The $800 puts on Friday close had a bid 226.00 the 790 s had a bid of 235.30 so if price rose $10 you Loss 1.90.
Now the 810 had a bid 226.15 So if price fell 10.00 you had a gain of 10.15.

So if you had any idea of how options worked you would know that there will be a similar sized loss if it goes up in price by the same amount? Is not true and you can tell that without knowing anything about what options he has been buying. How much then you need to know expiration date and strike price. If expiration date Is less than a month away it may be more important.