Jeffrey F. Jaffe

Jeffrey F. Jaffe
  • Associate Professor Emeritus of Finance

Contact Information

  • office Address:

    2317 Steinberg-Dietrich Hall
    3620 Locust Walk
    Philadelphia, PA 19104

Links: CV



PhD, University of Chicago, 1972; MBA, University of Chicago, 1971; BA, University of Chicago, 1968

Career and Recent Professional Awards; Teaching Awards

Outstanding Professor Award, Evening School, 1990

Academic Positions Held

Wharton: 1973-present.

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  • Jeffrey F. Jaffe and Anup Agrawal (1995), Does Section 166 Deter Insider Trading by Target Managers?, Journal of Financial Economics, 39 (Oct./Nov. 1995). 10.1016/0304-405X(95)00833-Z

    Abstract: This paper examines empirically whether the short-swing rule (Section 16b of the Securities Exchange Act) deters managers from trading before mergers. Since a merger forces the sale of the target's outstanding equity, insider purchases within six months before the merger cannot escape this rule. We examine the 1941–1961 period when no other insider trading laws were enforced. Consistent with 16b's deterrent effect, managers' purchases drop significantly before the announcement. Before completion, the decrease occurs only in the 1941–1955 period. Surprisingly, pre-announcement sales do not decline, even though 16b cannot punish deferral of planned sales.

  • Jeffrey F. Jaffe, R. Westerfield, D. Keim (1989), Earnings Yields, Market Values and Stock Returns, Journal of Finance, 44.1 (March 1989).

    Abstract: Earlier evidence concerning the relation between stock returns and the effects of size and earnings to price ratio (E/P) is not clear-cut. This paper re-examines these two effects with (a) a substantially longer sample period, 1951-1986, (b) data that are reasonably free of survivor biases, (c) both portfolio and seemingly unrelated regression tests, and (d) an emphasis on the important differences between January and other months. Over the entire period, the earnings yield effect is significant in both January and the other eleven months. Conversely, the size effect is significantly negative only in January. We also find evidence of consistently high returns for firms of all sizes with negative earnings.

  • Jeffrey F. Jaffe, Donald B. Keim, R. Westerfield (1989), Earnings Yields, Market Values, and Stock Returns, Journal of Finance.


Past Courses


    This course provides an introduction to the theory, the methods, and the concerns of corporate finance. The concepts developed in FNCE 100 form the foundation for all elective finance courses. The main topics include: 1) the time value of money and capital budgeting techniques; 2) uncertainty and the trade-off between risk and return; 3) security market efficiency; 4) optimal capital structure, and 5) dividend policy decisions. ACCT 101 + STAT 101 may be taken concurrently. Honors sections require MATH 114 as a prerequisite.


    Integrates the work of the various courses and familiarizes the student with the tools and techniques of research.


    This course covers one of the most exciting and fundamental areas in finance. Financial derivatives serve as building blocks to understand broad classes of financial problems, such as complex asset portfolios, strategic corporate decisions, and stages in venture capital investing. The main objective of this course is build intuition and skills on (1) pricing and hedging of derivative securities, and (2) using them for investment and risk management. In terms of methodologies, we apply the non-arbitrage principle and the law of one price to dynamic models through three different approaches: the binomial tree model, the Black-Scholes-Merton option pricing model, and the simulation-based risk neutral pricing approach. The course covers a wide range of applications, including the use of derivatives in asset management, the valuation of corporate securities such as stocks and corporate bonds with embedded options, interest rate and credit derivatives, as well as crude oil derivatives. We emphasize practical considerations of implementing strategies using derivatives as tools, especially when no-arbitrage conditions do not hold.


Latest Research

Jeffrey F. Jaffe and Anup Agrawal (1995), Does Section 166 Deter Insider Trading by Target Managers?, Journal of Financial Economics, 39 (Oct./Nov. 1995). 10.1016/0304-405X(95)00833-Z
All Research