The risk conscious investor is defined as the maximizer of a conservative valuation or dynamically a nonlinear expectation. Both the static and dynamic problems are addressed using distortions of tail probabilities or distortions of tail measures. The multivariate static problem is solved in the...

To many people, the terror of falling share prices is often significant, often more so than the pleasure of gains. Accordingly, investors often want to minimize downside volatility as a part of their portfolio planning. Investors already have several tools to measure downside volatility,...

Asset allocation strategies which utilize stop-loss and stop-gain rules may dramatically decrease risk and even increase long-term return relative to passive investing. I introduce an asset allocation strategy which shifts portfolio weights based on simplistic stop rules. The two-asset (S&P...

As stress testing becomes more and more widespread as a risk measurement tool of choice, new questions are formulated about its applications to portfolio management. One of the most important ones for fund managers is: ‘How do we analyze results of stress tests for benchmarked portfolios?' We...

We discuss how to build ETF risk models. Our approach anchors on i) first building a multilevel (non-)binary classification/taxonomy for ETFs, which is utilized in order to define the risk factors, and ii) then building the risk models based on these risk factors by utilizing the heterotic risk...

We propose a new methodology to build portfolios that hedge the economic and financial risks from climate change. Our quantity-based approach exploits information on how mutual fund managers trade in response to idiosyncratic changes in their climate risk beliefs. We exploit two types of...

We study whether mutual funds systematically manage downside risk of their portfolios in ways that improve their performance. We find that actively managed mutual funds on average possess positive downside risk timing ability. Funds investing in large-cap and value stocks have stronger downside...

We examine whether professional money managers overreact to large climatic disasters. We find that managers within a major disaster region underweight disaster zone stocks to a much greater degree than distant managers and that this aversion to disaster zone stocks is related to a salience bias...

The recent financial crisis and the corresponding market crash have had a tremendous impact on investors with significant exposures to equity markets but without appropriate risk control tools. Indeed, within just a few weeks a number of pension funds, university endowments, and mutual funds...

The concept of enterprise risk management will be examined in the context of multi-strategy hedge funds and fund of hedge funds. This paper seeks to demonstrate that risk at these organizations has to be considered holistically and not in “silos”. A number of qualitative and quantitative...