Gaps are not always filled. Even if filling, can be just below higher price, mid-way, slightly above lower price or completely… no way to tell how the gap would be filled 
IRBT is banging against 200-day/ 52-week EMA. The fib 61.8% is at $68.66. Even though I think is unlikely to hit $70, place a GTC BTO call (Dec $70) at equivalent price of $70 just in case Jil is right.
2 Likes