KBW Bank Index Daily Chart:
I won't go over fundamentals because there is not enough good news to justify the rally. My analogy is based on pure technical analysis.
KBW has formed an uptrend channel. Watch out for $44, it is the short term support, if 44 support line holds we should see a nice move higher, in the short term $46 is the resistance.
Note that if banks want to continue higher; KBW should not violate the lower side the channel.