We analyze recent contributions to growth theory based on the model of expanding variety of Romer (1990). In the first part, we present different versions of the benchmark linear model with imperfect competition. These include the 'labequipment' model, labor-for-intermediates' and 'directed...

We analyze recent contributions to growth theory based on the model of expanding variety of Romer [Romer, P. (1990). “Endogenous technological change”. Journal of Political Economy 98, 71–102]. In the first part, we present different versions of the benchmark linear model with imperfect...

This paper aims to examine to what extent can investors’ sentiments extracted from social media content, specifically Twitter, improve the predictability of the S&P 500 price levels. Two Recurrent Neural Network models were built; the first one is solely based on historical records and...

The green bond market has grown rapidly since its inception in 2007. Climate-aligned standards provide investors with the confidence that their investments deliver a measurable climate benefit. Serving as a benchmark, these standards demonstrate alignment with the Paris Agreement, against which...

In this paper, we argue that, once the costs of maintaining the hedging portfolio are properly taken into account, semi-static portfolios should more properly be thought of as separate classes of derivatives, with non-trivial, model-dependent payoff structures. We derive new integral...

This paper discusses the state of the art in research in racetrack and lottery investment markets. Market efficiency and the pricing of various wagers is studied along with new developments since the Thaler and Ziemba (1988) review. The weak form inefficient market approach using stochastic...

We present a stochastic dynamic model of the adjustment of betting odds by bookmakers in a horse-racing betting market. We use optimal stopping theory in a two-horse benchmark model with both informed and noise punters. A costly learning process discloses what information the informed traders...

Using a shock to transparency in a parimutuel betting market, we show that capital flows increase in public information even in markets with largely risk-seeking participants. The evidence indicates that capital allocation decisions are partly a function of behavioral mechanisms such as the...

We examine equilibria in competitive insurance markets when individuals take unobservable labor supply decisions. Precautionary labor motives introduce countervailing incentives in the insurance market, and equilibria with positive profits can occur even in the standard case in which individuals...

We consider a competitive insurance market with adverse selection. Unlike the standard models, we assume that individuals receive the benefit of some type of potential government assistance that guarantees them a minimum level of wealth. For example, this assistance might be some type of...