• Efficiency in the markets of crypto-currencies 

      Tran, Vu Le; Leirvik, Thomas (Peer reviewed; Journal article, 2019)
      We show that the level of market-efficiency in the five largest cryptocurrencies is highly time-varying. Specifically, before 2017, cryptocurrency-markets are mostly inefficient. This corroborates recent results on the ...
    • A simple but powerful measure of market efficiency 

      Tran, Vu Le; Leirvik, Thomas (Peer reviewed; Journal article, 2019)
      We construct a simple measure to quantify the level of market efficiency. We apply this measure to investigate the level of market efficiency and analyze its variation over time. The main contribution of the new measure ...