We study the effects of broadband internet use on the portfolio selection of individual investors. A public program in Norway provides plausibly exogenous variation in internet use. Our instrumental variables estimates show that internet use causes a substantial increase in stock market...

Using detailed procurement auctions and register data, we find that temporary demand shocks have long-term effects on startup outcomes. Startups that win a procurement auction are more than 20% larger in terms of sales and employment than startups that narrowly lose an auction, even several...

We study the effects of broadband internet use on the investment decisions of individual investors. A public program in Norway provides plausibly exogenous variation in internet use. Our instrumental variables estimates show that internet use causes a substantial increase in stock market...

I assess the impact of increasing the tick size on stock liquidity and trading volume in illiquid stocks. Using a regression discontinuity design at the Oslo Stock Exchange, I find that increasing the tick size has no impact on the transaction costs, order book depths, or trading volumes of...

We explore the effects of a "tick size war" where European exchanges competed directly on the minimum pricing increment in the limit order book, the tick size. We find exchanges that reduced their tick size immediately captured market shares of quoted and executed volume from exchanges that kept...

I explore a reform at the Oslo Stock Exchange to assess the causal effect of post-trade trader anonymity on stock liquidity and trading volume. Using a regression discontinuity approach, I find that anonymity leads to a reduction in bid-ask spreads by 40% and an increase in trading volume by...