What would you call unusual? I mean there is value if you can guarantee that the person buying 1300 4/26 AAPL $207.50 calls is not hedging (Hypothetical trade here) because then it makes sense to follow it, or investigate why. However, in many cases there may be another trade either stock buy/short, or calls/puts spread out against multiple strikes/expiration's which can signal unusual trading but it's just a hedge or a calendar spread and so on.