We investigate how well the actual exercise behaviour of American put options corresponds to the early exercise rules using Swedish equity option data. The numerical binomial model according to Cox et al. (1979) is used to compute a critical exercise price, above which a put option should be...

This study estimates the value of the early exercise premium in American put option prices using Swedish equity options data. The value of the premium is found as the deviation of the American put price from European put-call parity, and in addition a theoretical estimate of the premium is...

Using daily Swedish equity options data, an empirical analysis of some basic textbook properties for American options is performed. Several violations of these properties are found; call and put prices often move in the quot;wrongquot; direction compared to the stock price, call and put prices...

This study presents a model for estimating the asymmetry of option values with respect to option bid-ask spreads. The model does not require knowledge of the actual option value to evaluate the asymmetry. Using data from the Swedish equity options market, several interesting results emerge....

We investigate the economic rationale behind limit order cancellations from the perspective of liquidity suppliers. We predict that an order is cancelled whenever its expected revenue no longer exceeds the expected cost and we model how order profitability variation can be determined from...

High-frequency traders (HFTs) mainly operate on public exchanges where multiple third-party buying and selling interests interact with each other. Following recent European regulatory changes (the Markets in Financial Instruments Directive II), HFT single-dealer platforms have emerged on which...

Market microstructure invariance (MMI) stipulates that trading costs of financial assets are driven by the volume and volatility of bets, that are, transactions intended to produce idiosyncratic gains based on investors’ beliefs. With futures transactions data, we estimate bet volume as the...

Recently, several stock index futures exchanges have experimented with an altered contract design in order to make the contract more attractive and to increase investor accessibility. In 1998, the Swedish futures exchange (OM) split the OMX-index futures contract with a factor 4:1, without...

This study analyses two types of information flows in financial markets. The first type represents return information, where informed investors know whether the stock price will increase or decrease. The second type is labelled volatility information, where the direction of the stock price is...

Recently, the Swedish options and futures exchange (OM) launched some regulatory changes in the design of the OMX index options market. The redesign constituted two alterations in the option contract specifications; a coarser strike price interval for the index options, and a 4:1 split affecting...