Finance -- Everything Worth Knowing and a Great Speaker

Yesterday, my teenage daughter asked me to write about Everything Worth Knowing in Finance. Coincidentally, and, propitiously yesterday, one of my former students, Dr. Dmytro Matsypura of the University of Sydney, gave a talk in our Speaker Series on Combinatorial Analysis of Option Spreads. He spoke on margining accounts, i.e., the calculation of minimum regulatory margin requirements for margin accounts, which is a critical intra-day and end-of-day risk management operation in the list of mandatory activities of any prime brokerage firm. Margining an account without positions in options or other derivatives is simply the calculation of the total margin requirement for all positions in the account. Options, however, he noted, bring a nontrivial combinatorial component to the calculation because margin regulations for positions in options permit the use of different hedging strategies for margin reductions. Hedging strategies usually imitate trading strategies designed for margin trading. Hedging strategies involving only options are called option spreads.

In December 2005, the U.S. Securities and Exchange Commission approved margin rules for complex option spreads with 5, 6, 7, 8, 9, 10 and 12 legs (positions in options). Only basic option spreads with 2, 3 or 4 legs were recognized before. Taking advantage of option spreads with a large number of legs substantially reduces margin requirements and, at the same time, adequately estimates risk for margin accounts with positions in options. Dr. Matsypura presented combinatorial models for option spreads with any number of legs and proposed their full characterization in terms of matchings, alternating cycles and chains in colored graphs. With co-authors, he showed that the combinatorial analysis of option spreads reveals powerful hedging mechanisms in the structure of margin accounts. He also provided recommendations on how to create more efficient margin rules for options.

My favorite part of his presentation came at the very end, when he showed that what was considered to originally be an NP hard problem could be transformed into a maximum flow network problem! This was a really exciting result! Having co-authored with Dr. Stavros Siokos, the book, Financial Networks: Statics and Dynamics, I love to see additional network structures identified in financial problems!

The photos above were taken at Dr. Matsypura's talk and the lunch that followed.

Plus, yesterday, I received a new book in the mail, co- authored by two of my colleagues in my department, Professors Thomas Schneeweis and Hossein Kazemi, and Garry B. Crowder, a lawyer and financier. Their book, published by Wiley, is called, The New Science of Asset Allocation: Risk Management in a Multi-Asset World. This will be good reading during my air travels.

Hosting a Visiting Scholar from Australia (Who Also Was a Former Doctoral Student)

Dr. Dmytro Matsypura, of the University of Sydney in Australia, who was my former doctoral student, will be a Visiting Scholar at the Isenberg School of Management until mid-May.

Dr. Matsypura received his PhD in 2006 (I was the chair of his dissertation committee) and the title of his dissertation was, Dynamics of Global Supply Chain and Electric Power Networks: Models, Pricing Analysis, and Computations. We co-authored several papers together, including one that was published in a special issue of Transportation Research E on global supply chains.

Dr. Matsypura is on the faculty of Economics and Business at the University of Sydney (one of the top research universities) and teaches in its Operations Management and Econometrics program. He received tenure in 3 years and is now on sabbatical. Needless to say, it is wonderful when a former student achieves tenure in such record time (indeed, there has been much in the news and media lately about the stress of being on the tenure-track). Plus, it is also special when a former student chooses to spend a good part of his sabbatical leave at the university (UMass Amherst) where he pursued his doctoral studies.

Dr. Matsypura will be speaking in our 2010 Spring INFORMS Speaker Series later this month.

You're Only as Good as Your Last Student

Frank Carroll, the coach of several Olympic figure skaters, including Evan Lysacek and Michelle Kwan, said it well: You are only as good as your last student. The New York Times had a recent terrific interview with him in which he was asked whether having one of his students get a gold medal at the 2010 Winter Olympics (in this case Evan Lysacek) would be meaningful to him -- something that has eluded him.

I do think that his quote has relevance also to a professor and especially when one considers one's most recent PhD student to graduate. My most recent PhD student, who received his PhD in May 2009 was Dr. Patrick Qiang. Above is an announcement for an upcoming talk of his at the university where he is now a faculty member.

Interestingly, another former PhD student of mine who received his PhD in 2006 from UMass Amherst, Dr. Dmytro Matsypura, also has some great news to report. He has received tenure from the University of Sydney in Australia where he has been on the Faculty of Economics and Business for the past 3 years. He is in the Discipline (something like a Department in a US-based university) of Operations Management and Econometrics. Plus, he has been granted a sabbatical. He will be coming back to his alma mater as a Visiting Scholar.

Being a professor is like being a coach and Frank Carroll said it brilliantly!