3 ms·

“A reasonable amount of time” https://www.bloomberg.com/opinion/articles/2019-12-19/traders-heard-a-speech-too-soon https://www.bloomberg.com/opinion/articles/2

• jkingsman 6y ago
  There have been cases where it happens after a certain amount of time after the announcement, technically, but where there wasn't enough time for speed of light delay to get the information to the place where the trade was executed. https://www.washingtonpost.com/news/wonk/wp/2013/09/24/traders-may-have-gotten-last-weeks-fed-news-7-milliseconds-early/ https://www.washingtonpost.com/news/wonk/wp/2013/09/24/trade...
  • Filligree 6y ago
    Hmm. In that case it didn't happen after the announcement. If the events have space-like separation, then neither 'before' nor 'after' are valid descriptions. (And "simultaneously" is right out.) Good luck telling regulators this, I suppose...