How some bankers made a million by trading just two securities?

Research output: Contribution to journalArticleScientificpeer-review


Research units

  • University of Luxembourg


We study a pair trading strategy that utilizes short-term return reversals in the stock market. Using U.S. data, we show that returns to our pair trading strategy exceed reasonable estimates for transaction costs. The strategy also generates positive alpha when controlling for the standard risk factors. Second, using transaction level data from Finland, focusing on a popular pair, we provide evidence that these kinds of pair trading returns are compensation from providing liquidity. On the days when the expected returns to our pair trading strategy are the highest, the trading volume is abnormally high and, judging from active brokers' net trades, nearly 45% of all brokers (or their customers) engage in pair trading in accordance with our trading strategy. These brokers are mainly counterparties to few brokers that trade large quantities of stocks inconsistent with our strategy.


Original languageEnglish
Pages (from-to)304-315
Early online date12 Sep 2016
Publication statusPublished - Dec 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • Liquidity provision, Pair trading, Short-term return reversals

ID: 11546999