Why is the Betashares Asia Technology Tigers ETF (ASX:ASIA) struggling in December?

The S&P/ASX 200 Index (ASX: XJO) has actually had a pretty decent start to this twelfth month of the year thus far. Over December, the ASX 200 has gained around 0.73%. Not too shabby, one could say. But in saying that, it certainly leaves a lot to be…