Goldman Sachs Group Inc (NYSE:GS) stock is inching higher today, up 0.3% to trade at $472.51 at last glance and extending last session's bounce after the sector was hit hard on Tuesday. GS could extend its rebound, too, as it is now flashing a historically bull signal on the charts. The bank giant pulled back to its 100-day moving average during this week's negative price action, and per Schaeffer's Senior Quantitative Analyst Rocky White, it's run into this trendline five times in the last three years. For ...