Where is the money flowing? Here are the clues:
$TIA broke above 0.5379, reaching a six-month high. At the moment of the breakout, all positions bought at any point in the past 180 days were in profit.
Trading volume then climbed to 1.9 times the daily average: new money was buying, while some investors who had been waiting to break even took the opportunity to cash out. Who has more staying power will depend on whether buyers step in during a pullback.

Just my personal take—it may not be accurate, so approach it rationally.