Ever notice how Bitcoin sometimes gaps up or down on Monday mornings? That's the CME gap phenomenon, and it's something serious traders pay attention to. Here's what's actually happening. The Chicago Mercantile Exchange runs Bitcoin futures during traditional market hours — Monday through Friday, 5 PM to 4 PM Central Time. But crypto never sleeps, right? So when the CME closes Friday afternoon, the crypto market keeps pumping or dumping all weekend. Come Sunday night when everyone's checking prices before bed, there's often a disconnect between where Bitcoin closed on CME and where it's actually trading in the 24/7 markets. That gap on the chart? That's your CME gap. What makes this worth tracking is that Bitcoin has a weird habit of filling these gaps. Price tends to eventually revisit that untraded zone, sometimes within hours, sometimes within days. It's like the market has an itch to scratch. Say Bitcoin closes the CME Friday at 63K, then shoots up to 65K over the weekend. You've got a 2K gap sitting there. Odds are decent price will retrace back down to that 63K level to "fill" the gap at some point. Not foolproof by any means, but it's a pattern that shows up consistently enough that traders use it for anticipating reversals or continuation plays. The CME gap isn't magic, but it's definitely one of those technical quirks worth keeping on your radar if you're trading Bitcoin futures or timing your spot entries. Just another tool in the strategy toolkit.