The financial sector has been on fire for the last quarter, and London-based HSBC Holdings ( HBC) has been no exception. The big bank has seen its share price rally around 20% in those trailing three months. And from here, it doesn't take an expert technical analyst to figure out what's going on in this stock. HBC is currently forming an uptrending channel, a trading range that's bounded by a trendline resistance and trendline support level. Those support and resistance levels give us a high probability range for this stock to trade within. And as you might expect, the ideal time to be a buyer is on a bounce off of support. When you're looking to buy a stock within a trend channel, buying after a bounce off of support makes sense for two big reasons: it's the spot where shares have the furthest to move up before they hit resistance, and it's the spot where the risk is the least (because shares have the least room to move lower before you know you're wrong). Keep that in mind when putting in a stop loss in HBC. To see this week's trades in action, check out this week's Must-See Charts portfolio on Stockpickr. -- Written by Jonas Elmerraji in Baltimore.