We investigate the new reality of exchange-traded funds (ETFs). We show that many ETFs are active investments in form (designed to generate alpha) or function (serve as building blocks of active portfolios). The median ETF has an Activeness Index of 93.1%. Active-in-form ETFs have positive...

We study how investor's persistent preference to invest more in the home market — “home bias” — is affecting investor's efforts to mitigate risks associated with climate change. When investors have a tendency to tilt their portfolio towards domestic assets, the carbon intensity in the...

In this paper, I examine the flow and performance of mutual funds in Brazil and their portfolio allocations during the global financial crisis. First, I show that mutual funds exposed to deposits and securities issued by small banks suffered significant outflows, due to the increased risk...

We present a framework for deciding when to choose an alternative to passively investing in capitalization-weighted indices within any particular asset class. Five reasons are identified for seeking an alternative. Three of these reflect situations where a capitalization-weighted index is either...

Purpose Passive investing has established itself as the dominant force in the world of professionally managed assets, surpassing the concept of index funds. Its meteoric rise is fueled by investors' preference for its dual benefits of strong diversification and low cost. A comprehensive study of...

Large-Scale Asset Purchases can impact the price of securities directly, when securities are targeted by the central bank, or indirectly through portfolio re-balancing of private investors. We quantify both the direct and the portfolio re-balancing impact, emphasizing the role of investor...

We present a general equilibrium model in which heterogeneous investors choose among bonds, stocks, and an Index Fund holding the market portfolio. We show that, under standard assumptions, an equilibrium exists. We then derive predictions for equilibrium asset prices, investor behavior, and...

We investigate the extent to which investors exhibit carbon home bias: disproportionate investment in carbon-intensive firms from the home market. We utilize a comprehensive stock-level holdings dataset of European investors to understand the relationship between carbon home bias, divestment and...

The paper studies mutual funds' portfolio management and investors' capital allocations in a unified framework under mandatory portfolio disclosure. By modeling fund managers and investors simultaneously, I show that more skill managers produce better performance by trading more actively, which...

A defined contribution pension plan allows consumption to be redistributed from the plan member's working life to retirement in a manner that is consistent with the member's personal preferences. The plan's optimal funding and investment strategies therefore depend on the desired profile of...