And just like that... December is upon us. It's been a volatile handover from November with U.S. major indices underperforming, dragged down by steep declines for the Nasdaq. Europe's Stoxx 600 managed to hold onto gains, making November the fifth positive month in a row. But tech stocks also suffered, as concerns over AI valuations and spending plans played out across global stock markets.So what does this mean for December — can stocks stage a seasonal Santa Rally, or will it be more 'bah humbug' in the f ...