Four Lessons from Stress Testing Exercise
“It very quickly became apparent that this was not a one- or two-month exercise,” said Charyn Faenza, Vice President, Manager of Corporate Business Intelligence Systems at First National Bank, the largest subsidiary of the largest subsidiary of FNB Corporation. She was the second of two presenters at the May 19, 2015, webinar on Stress Testing Modeling sponsored by the Global Association of Risk Professionals. Faenza was referring to her bank’s experience as an example of a “DFAST 10-50” bank that is required to conduct an annual stress test. She drew four important lessons from the exercise. Good Modeling Requires Good […]
“Not Only The What But The How”
When it comes to financial data for stress testing, there’s a good news-bad news aspect. The good news may be that a bank did not suffer severe financial stress but the bad news is that it will be harder for the bank to model “bad events” if it does not have such data. And banks “will get written up if [the regulators] don’t believe their bad events,” said Tara Heusé Skinner, Manager at SAS Risk Research & Quantitative Solutions, and co-author of The Bank Executive’s Guide to Enterprise Risk Management. She was the first presenter of two at the May […]
Three Takeaways
Does it ever seem awkward to run Visual Basic subroutines within Microsoft Excel? If you have a plain unvarnished subroutine, you must click through to the Developer tab, and then point and click to find the macro of interest. “There are more convenient ways to access the macros you build,” said Andrew Nikolishyn of Vesta Solutions. He was the instructor of a day-long seminar on “Visual Basic for Financial Professionals,” held on location at the CFA Society of Toronto on May 1, 2015. In Part 1 of this posting, I described how participants could access the Developer tab to create […]
Hum a Few Bars and I’ll Fake It
How far can you go at reducing the tedium in your spreadsheet usage? On May 1, 2015, nearly twenty people attended a day-long seminar “Visual Basic for Financial Professionals,” held on location at the CFA Society of Toronto. The seminar was conducted by Andrew Nikolishyn, CFA, of Vesta Solutions. I often use Microsoft Excel as a scratch pad and a tally sheet, but lately I’ve had to do connected tasks on a regular basis, involving recent financial data. I prepare a graph from the data, and I also run a simple present value calculation, to compare with the previous month’s […]
Better Living Through Topology
“It gets downright annoying when I’m just trying to check my e-mail but I get prompted to answer three security questions,” said Alexis Johnson, voicing a concern shared by many in the audience when fraud detection is so overblown it obstructs ordinary use of software. Johnson, Director of Technical Sales at the big data analytics firm Ayasdi, was the second of two presenters at a webinar on the topic “The Fraud Arms Race” sponsored by the Global Association of Risk Professionals on April 21, 2015. When it comes to detecting fraud in big data, “data complexity, not volume, is the […]
Tailoring Risk Model to Investment Strategy
Due to the growing complexity of measuring financial risk, “risk has become a patchwork” of different models, said Phil Jacob, Senior Director at Axioma Risk Research. He was the sole presenter in a webinar about tailoring the right risk model to your investment strategy held on March 4, 2015, and sponsored by the Global Association of Risk Professionals (GARP). Jacob identified four inherent challenges. “There are operational issues stemming from existing rigid approaches,” leading to “difficulty in aggregating risk.” There is a lack of consistency in modeling portfolios, which can run the gamut from very simple proxies all the way […]
Stress Testing Mortgages. Part 2
The team of Scott L. Smith, Jesse Weiher, and Debra Fuller at the Federal Housing Finance Agency (FHFA) use specialized financial models to estimate potential losses. They carried out empirical tests of countercyclical shocks using four different models of mortgage credit risk. This posting continues a February 4, 2015, presentation by Scott L. Smith to an audience of financial risk managers at Global Association of Risk Professionals (GARP). Two models were devised at FHFA, and two are commercially available credit models: one, called Black Knight (formerly LPS-AA), and the other called ADCO Loan Dynamics. The estimated losses were converted to a capital […]
Stress Testing Mortgages. Part 1
“One needs to be careful and not over-reliant on any one model,” said Scott L. Smith, Associate Director for Capital Policy at the Federal Housing Finance Agency (FHFA). He was referring to the financial models used by major financial institutions to estimate potential losses. On February 4, 2015, he was presenting a GARP-sponsored webinar on countercyclical stress tests to set capital requirements. Smith explained how credit risk is measured for mortgages, and described a way to embed stress testing that uses countercyclical concepts. He and colleague Jesse Weiher, Senior Economist at FHFA, performed dynamic stress testing that was adjusted to […]
When Data Is Sparse. Part 2
It’s difficult to model sovereign credit risk for emerging markets using structural models such as the Merton model because “calibration is always an issue,” said Rob Stamicar, Senior Director of Research in Multi-Asset Class Risk Management at Axioma, continuing a theme during the second half of his webinar on December 2, 2014. During the first half, he showed how the probability of default can be used as a common link among the asset classes of interest (bonds, swaps, and equities). In the second half, he focused more on sovereign credit risk. Calculation of sovereign risk could be done directly, “but […]
When Data Is Sparse. Part 1
When modelling risk in emerging markets, are you hampered by sparse data? “Relationships between different asset classes can help measure the sovereign risk in emerging markets,” said Rob Stamicar, Senior Director of Research in Multi-Asset Class Risk Management at Axioma. He was sole presenter at a webinar on December 2, 2014, sponsored by the Global Association of Risk Professionals. When modelling global multi-asset class portfolios, “aggregation can be challenging,” said Stamicar, because the FX rates must also be taken into consideration—the subject for another day. His talk focussed on three asset classes: equity, fixed income, and credit portfolios. Infrequent data, […]