3 ms·

Anyone know what the y-axis measures? The original Nanex source doesn't label it either[1]. [1] http://www.nanex.net/aqck/2804.HTML http://www.nanex.net/aqck/2

• lt 14y ago
  Looks to me like the time of the day.
  • gahahaha 14y ago
    You are correct. Felix Salmon comments: http://blogs.reuters.com/felix-salmon/2012/08/06/chart-of-the-day-hft-edition/ http://blogs.reuters.com/felix-salmon/2012/08/06/chart-of-th... > in 2008, a pattern starts to emerge: a big spike right at the close, at 4pm, which is soon mirrored by another spike at the open. This is the era of traders going off to play golf in the middle of the day, because nothing interesting happens except at the beginning and the end of the trading day. But it doesn’t last long.
  • rgarcia 14y ago
    That's the x-axis.
• devingoldfish 14y ago
  Presumably share volume, though I'm not sure what the multiplier is (my guess would be 1000x).