Today (Friday), the most notable stock market crasher isn't just one stock - it's the Nikkei 225 index, Japan's benchmark.
The Nikkei came crashing down 488.32 points Friday to 14,327.66, for a 3.30% loss. That marks its lowest close since Feb. 14. Japan's broader index followed suit - the Topix of all First Section issues on the Tokyo Stock Exchange fell 38.76 points, or 3.22%, to 1,164.70. All in all, Tokyo ended the week down more than 6%.