Research Seminars

Alpha Decay*


Speaker: Anton Lines
Columbia Business School

24 May 2018 - T020 - From 2:00 pm to 3:15 pm


Using a novel sample of professional asset managers, we document positive incremental alpha on newly purchased stocks that decays over twelve months. While managers are successful forecasters at these short-to-medium horizons, their average holding period is substantially longer (2.2 years). Both slow alpha decay and the horizon mismatch can be explained by strategic trading behavior. Managers accumulate positions gradually and unwind gradually once the alpha has run out; they trade more aggressively when the number of competitors and/or correlation among information signals is high, and do not increase trade size after unexpected capital flows. Alphas are lower when competition/correlation increases.

What is the Expected Return on a Stock?


Speaker: Ian Martin

17 May 2018 - From 2:00 pm to 3:15 pm

We derive a formula that expresses the expected return on a stock in terms of the risk-neutral variance of the market and the stock’s excess risk-neutral variance relative to the average stock. These quantities can be computed fromindex and stock option prices; the formula has no free parameters. We run panel regressions of realized stock returns onto risk-neutral variances, and find that the theory performs well at 6-month, 1-year, and 2-year forecasting horizons. The formula drives out beta, size, book-to-market and momentum, and outperforms a range of competitors in forecasting stock returns out of sample. Our results suggest that there is considerably more variation in expected returns, both over time and across stocks, than has previously been acknowledged.

“Processing the Future: Venture Project Evaluation at the American Research and Development Corporation (1946–1973)”

Accounting & Management Control

Speaker: Martin Giraudeau
LSE/Sci. Po

4 May 2018 - HEC Paris - Room T025 - From 2:00 pm to 4:00 pm

This chapter is an analysis of the project appraisal procedures in place at American Research and Development Corporation (ARD) between 1946 and 1973, under the management of Georges F. Doriot. It shows the importance of knowledge technologies and administrative procedures in the way the venture capital company dealt with uncertain futures. The origins of these knowledge practices are traced back to Georges F. Doriot’s own views on business, and more generally to the pragmatist movement in business administration, of which he was a member. The conduct of project appraisal at ARD is then observed directly, and this reveals its reliance on a rich set of knowledge and diagnostic techniques, as well as administrative procedures. These observations allow for a specification of the nature and role of imagination in the entrepreneurship and venture capital practices examined here—in particular, its close relationship with organized knowledge.

Sovereign credit risk and exchange rates: Evidence from CDS quanto spreads


Speaker: Mikhail Chernov
UCLA Anderson School of Management

3 May 2018 - T015 - From 2:00 pm to 3:15 pm


Sovereign CDS quanto spreads { the difference between CDS premiums denominated in U.S. dollars and a foreign currency { tell us how fnancial markets view the interaction between a country's likelihood of default and associated currency devaluations (the twin Ds). A noarbitrage model applied to the term structure of quanto spreads can isolate the interaction between the twin Ds and gauge the associated risk premiums. We study countries in the Eurozone because their quanto spreads pertain to the same exchange rate and monetary policy, allowing us to link cross-sectional variation in their term structures to cross-country differences in fscal policies. The ratio of the risk-adjusted to the true default intensities is 2, on average. Conditional on the occurrence default, the true and risk-adjusted 1-wee probabilities of devaluation are 4% and 75%, respectively. The risk premium for the euro
devaluation in case of default exceeds the regular currency premium by up to 0.4% per week.

Discrimination and Entrepreneurship: Evidence from LGBT Rights Laws

Strategy & Business Policy

Speaker: Olenka Kacperczyk
Associate Professor of Strategy and Entrepreneurship , London Business School

3 May 2018 - Room # T004 - From 1:30 pm to 3:00 pm

This study revisits the well-established claim that reducing discrimination spurs entrepreneurial entry. We propose that the effect of antidiscrimination initiatives on entrepreneurship depends crucially on whether discrimination originates on the demand- or the supply-side of the entrepreneurial process. The benefits of antidiscrimination practices in the context of entry are based on the study of the demand-side discrimination, or bias which arises when prospective entrepreneurs face discrimination by key resource providers for a new venture (i.e., investors, banks, prospective employers). We hypothesize the opposite effect on the supply-side, or when prospective entrepreneurs face discrimination in paid employment. Using evidence from the enactment of LGBT antidiscrimination policies, we show that initiatives to reduce employer discrimination deter entry into entrepreneurship because they increase the appeal of paid employment relative to entrepreneurship. Despite the reduction in the rates of entrepreneurship, however, new ventures’ growth orientation increases because antidiscrimination policies motivate the pursuit of higher-potential opportunities.

“States of Mind: the many forms of government influence on the Accounting Profession in China”

Accounting & Management Control

Speaker: Crawford Spence
King’s College London

20 April 2018 - HEC Paris - T004 - From 2:00 pm to 4:00 pm

Literature examining dynamics between the State and the Accounting Profession is well established and points towards the crucial interrelations between the two. However, this literature evinces an occidental orientation, privileging the notion of a State characterised by self-limiting, liberal ideology and that is captured by dominant interests. An extension of this view portrays professional bodies as largely autonomous from State structures and effectively avatars for said dominant interests. This paper starts from the premise that studying State-Profession dynamics in China has the potential to invigorate this literature given the non-liberal, expansive nature of the Chinese State and the situation of a professional body that is effectively under the tutelage of the Ministry of Finance. Drawing on archival analysis and interviews with over 60 regulators, State actors, practitioners in local and foreign firms in China, we show that the State successfully shapes the accounting profession by performing multiple roles: as field-maker, as regulator and as a consumer of accounting services. Accounting firms, in turn, need to develop variable strategies in order to successfully position themselves in the face of this complexity. Conceptually, this permits us to demonstrate that the State is a deep rooted cultural phenomenon existing in the cognitive structures of key actors in the accounting field in China, thereby drawing attention to further reaching forms of State influence than have hitherto been recognised in extant literature analysing State-Profession dynamics.


Speaker: Adrien Matray
Princeton University

12 April 2018 - T004 - From 11:15 am to 12:30 pm

Entrepreneurial Wages


Speaker: Paige Ouimet
UNC Kenan–Flagler Business School

5 April 2018 - From 2:00 pm to 3:15 pm


Do young firms pay less? Previous studies have argued that employees earn less when they join young firms. Using US Census employer-employee matched data, we confirm lower average wages at new firms. However, after including worker fixed effects, nearly two thirds of this decline disappears, suggesting differences in worker quality at new firms. Moreover, once we control for
firm fixed effects, absorbing time invariant firm quality, the wage difference between new and established firms becomes economically unimportant. Overall, our findings indicate that, for a given worker who has job opportunities at similar quality new and established firms, the expected wage penalty of going to work at the new firm are, on average, economically insignificant.

Strategic trading at the preopening after earnings announcements

Accounting & Management Control

Speaker: Shai Levi
Tel Aviv University

23 March 2018 - HEC Paris - Room T004 - From 2:00 pm to 4:00 pm

Prior literature finds the price adjustment after earnings announcements is not immediate. This paper shows that informed investors act strategically to prevent their information from immediately affecting prices after announcements. Specifically, we examine the price discovery at the preopening auction after earning announcements. We show that traders place more orders at the end of the preopening after earnings announcements, a behavior that reduces the market’s ability to learn their information, and we find they profit from these late orders.

Swap Trading after Dodd-Frank: Evidence from Index CDS


Speaker: Haoxiang Zhu
MIT Sloan School of Management

22 March 2018 - From 2:00 pm to 3:15 pm


The Dodd-Frank Act mandates that certain standard OTC derivatives, also known as swaps, must be traded on swap execution facilities (SEFs). Using message-level data, we provide a granular analysis of dealers' and customers' trading behavior on the two largest dealer-to-customer SEFs for index CDS. On average, a typical customer contacts few dealers when seeking liquidity. A theoretical model shows that the benefit of competition through wider order exposure is mitigated by an endogenous winner's curse problem. Consistent with the model, we find that order size, market conditions, and customer-dealer relationships are important empirical determinants of customers' choice of trading mechanism and dealers' liquidity provision.