You probably a short term trader. Think long term. In the long term, commercial building rental will go up. As the economy becomes better, REITs will go up. So, don't sell now. Just stay in for the long term.
After Bernekie reassured he will back the economy if it fall to a dangerous level. So people are confident that there will not be another financial collapse. That is why today people take their money out of save haven asset like REIT and put them into more risky asset like Tech.