I was wondering why the price of an option increases with Rho (price change for a derivative relative to a change in the risk-free rate of interest). I found this explanation on a website:
"Each standard equity options contract represents 100 shares of the underlying stock. Because it’s much cheaper to buy a call options contract than it is to buy 100 shares of stock, call buyers are willing to pay more for call options when rates are relatively high because they can invest the difference. A call seller, on the other hand, would want additional incentive to sell a call option (versus selling the stock outright) if interest rates are high in order to compensate for forgoing the cash from the stock sale. In other words, the higher call options premium when interest rates are high is the “opportunity cost” of forgone interest. "
This makes sense, however, this contradicts in my opinion the knowledge that:
- Higher interest rates tend to negatively affect stock prices
- (Call) Option price decreases with decreases stock price (how much depends on Delta)
So shouldn't the (call) option price go down with increasing interest rates?
Can someone give me more insights? Thanks!