Shares of Credit Suisse (CS) have been trading in a range in 2017. As we can see in the daily chart below, the market started ranging between roughly 14 and 16.20 since the end of 2016. Credit Suisse (CS) Daily Chart(click to enlarge)Why Vulnerable?- First of all, I want to refer to another stock, from another sector all together, that is testing its 2017 range resistance. - You can see that Twilio (TWLO) is also testing its resistance, and I suggested a bearish outlook from resistance.- However the context of the overall price action is much different. 1) CS was bullish heading into the range, whereas TWLO was bearish.2) While, CS was bearish entering 2016, we can see that price action has since formed something of a rounded bottom. In this scenario, the 16.20 area is the neckline. This gives the market some more reason to be afraid of continuing to sell at the 16.20 neckline. 3) Price has climbed up above the 200-day simple moving average, and bounced off of it as support. This is a call the "bullish slingshot" signal, adding to the reason we should not trust resistance around 16.20.We should still anticipate some resistance here, but I wouldn't expect price to return to the 14.00 support area. Bullish Outlook:- If price indeed climbs above 16.20, it pens up the 20.00 handle, which is in a minor support/resistance pivot area. It is more of a psychological level.- Before that there might be sellers in the 17.75-18.00 area as well. This is another minor resistance level from seen in price action from 2016.