Wednesday, December 31, 2014

Java World 2014

Last time I worked with Java the most recent version was 1.4. Yes, it was quite a long time ago :)
Today I have received a link from my colleague, whom we started working on a new java-based project with, advising me to read the following article this night - Happy New Year to you!

I have read all the parts (Part 1, Part 2 and Part 3) and I should admit, it was worth reading!

P.S. Happy New Year. I wish the coming year will be good and peaceful for ALL the people.
Enjoy!

Saturday, November 15, 2014

Hypothetical Risk Valuation System

IT systems of banks and investment funds are versatile. They have been grown for years and today financial institutions increasingly rely on the quality of their quantitative technology. Such a trend has made computational finance topmost important.

Computational finance is a cross-disciplinary field that focuses on the financial services industry and relies on mathematical finance, numerical methods and computer simulations to make investment decisions and facilitates portfolio risk management.

Despite the fact banks tend to develop risk valuation systems in-house all of them can generally fit into the given below schema.

How the system works

Wednesday, July 16, 2014

Bayessian Networks Overview

Recently I decided to refresh my knowledge in machine learning. There are plenty of courses available. However I found that some rather simple topics are unnecessary overcomplicated!
Hence I would like to share few links to useful resources:

Also Pattern Recognition and Machine Learning book by Chrisophe Bishop (eng) is available by http://www.hua.edu.vn/khoa/fita/wp-content/uploads/2013/08/Pattern-Recognition-and-Machine-Learning-Christophe-M-Bishop.pdf

Wednesday, July 02, 2014

Quant Bookshelf

A good resource with a list of readings for those who are interested in better understanding quants to speak the same language at least! ;)
http://www.quantstart.com/

Tuesday, July 01, 2014

Quantitative Finance Videos

Nathan Whitehead made a list of videos related to quantitative finance. Most are based on the book "Paul Wilmott on Quantitative Finance, 2nd Edition". And some are from "The Concepts and Practice of Mathematical Finance" by Mark Joshi.

Tuesday, June 24, 2014

Healing Love

This weekend I watch a film about st. Giuseppe Moscati, an italian doctor and scientist. It is very heartful and positive.

Sunday, June 22, 2014

Asset Based Securities Regulatory Changes

What does ABS mean? 

An asset-backed security (ABS) is a security whose income payments and hence the value is derived from and collateralized (or "backed") by a specified pool of underlying assets.
The pool of assets is typically a group of small and/or illiquid assets which can’t be sold individually.
The market appeared in the 1980’s and is developing till now

ABS Basic Structure

The pools of underlying assets can include:
  • Common payments e.g.: credit cards, auto loans, mortgage loans
  • Other cash flows e.g.: aircraft leases, royalty payments, movie revenues
Pooling is also called securitization.
Hence, Collateral Debt Obligations (CDO) and Mortgage Backed Securities (MBS) are sub-types of ABS

ABS Types by Cashflow Filling

Fully-supported: repayment is supported by a financial guarantee (surety bond, letter of credit, third party guarantee or irrevocable liquidity facility). 
This provides both liquidity and credit protection for investors: the provider of the support has agreed to provide funds to the SPV (Special Purpose Vehicle) to repay investors without regard to the value of assets owned by the SPV.
Partially-supported: repayment primarily depends on the cash flow expected to be realized on the pool of assets, as well as liquidity and credit enhancement from third parties.

Roles in ABS

  • Seller / Originator
  • Special Purpose Vehicle (SPV)
  • Servicer
  • Trustee
  • Underwriter
  • Investors
The seller assembles the pool of financial assets backing the securities by purchasing them. 
Synonyms: originator, depositor or other sponsor
The seller then describes the financial assets in offering materials and sells the securities backed by them to investors. 
The seller also chooses other participants: underwriter, servicer, trustee.

Underwriters, their counsel and other experts conduct a ‘due diligence’ - review of the assets, the structure of the transaction and the parties involved to obtain protection under the securities laws that the prospectus or other sales document is accurate. 

The servicer is appointed as an independent contractor who performs its servicing obligations for the benefit of the transaction investors. 
The servicer typically collects all the income from the assets, enforces the assets as needed and may perform any evaluations needed to substitute assets.

Trustee in ABS is a broad term role:
  • Indenture (agreement) trustee
  • Issuing and paying agent
  • Securities registrar, transfer agent and calculation agent with respect to the securities
  • Custodian of the assets (on behalf of the issuer) 
  • Analytics provider
  • Back-up servicer 

REG AB

The Regulations AB were dopted in 2004
Requires specific disclosure regarding ABS transaction counterparties in transactions registered with the SEC, including trustees, sponsors, depositors, issuing entities, servicers, originators and others. 
The crisis of 2007-2009 revealed the lack of transparency of ABS trading.

REG AB II Proposal

Proposed in April 2010, July 2011, August 2013 and is aimed to further enhance ABS market transparency.
Lastly re-opened for comments on Feb 25, 2014 till March 28, 2014.
New regulation will impose substantial changes in the rules and forms of the offering process, disclosure and reporting requirements for ABS 
Proposal is a different name of REG AB II
SEC believes that compliance date for the new rules should NOT extend more than a year past their adoption date
Though SEC requests comment on whether any of the proposals should be phased (from 6 months to 2 years). 
  1. Registration
    - Remove the investment-grade rating requirement for shelf eligibility and impose new requirements e.g. CEO certification
  2. Disclosure
    - Increase the amount of disclosure provided in public offerings and
    - In shelf offerings, the amount of time that investors would have to examine the disclosure.
    - Require that in any private offering of “structured finance products” made in reliance on Rule 144A under the Securities Act of 1933, investors have the right to obtain all of the same initial and ongoing information as if the offering were SEC-registered.
  3. Periodic reporting
    - This is less important thus is out of scope

Registration Process 

According to Reg AB, securities may be later offered “off the shelf” (Form S-3) if the securities are rated investment grade by a nationally recognized statistical rating organization (NRSRO)
Instead, Reg AB 2 (Form SF-3) would require new conditions:
ABS sponsor to retain at least 5% of each tranche of ABS offered and would not permit hedging those holdings
A certification filed at the time of each takedown by the CEO of the depositor that the assets in the pool will produce cash flows to service any payments on the securities as described in the prospectus.
Transaction documents to contain a mandate for the trustee to appoint a credit risk manager which would review the pool assets when certain trigger events occur. 
Purpose
  • To avoid overflying on rating agencies adding “skin of the game”
  • Stimulate inclusion of higher quality assets in ABS – risk retention
Opposition
  • Depositor CEO could not be expected to have the knowledge necessary to certify the performance of the securities 
  • The text of the certification could still be taken as a guarantee of future performance even though SEC believes certification requirement is *NOT* intended to serve as a guarantee of payment of the securities.
  • Proposal for a 3-rd party opinion is complex, costly, and would not achieve its goals of strengthening the enforceability of representations and warranties regarding the pool assets.

Changes Disclosure Enhancements 

According to Reg AB, the issuer have to provide an incremental information - static pool data - so that investors can evaluate trends or patterns of the performance of specific types of assets originated at different points in time.
In addition, Reg AB 2 requires standardized data on specific loans and assets within the pool:
  • both at time of registration (e.g., credit scores of the obligors and date through which interest is paid in residential MBS, dealer geographic location and vehicle manufacturer for automobile-backed securities, etc)
  • and in an ongoing basis (e.g., whether an obligor is making payments as scheduled, efforts by the servicer to collect amounts past due, the losses that may pass through to investors, etc)
Static Pool Data Example


Disclosure of Pool Asset Data

Purpose
  • To bring more transparency for investors about the pool of assets
Opposition
  • Originally the new asset-level data points would have been required to be publicly filed on EDGAR. – e.g.: geographic location, credit score, income and debt geographic location, credit score, income and debt. However, certain data points can disclose private information and break privacy law.
EDGAR - Electronic Data-Gathering, Analysis, and Retrieval system, performs automated collection, validation, indexing, acceptance, and forwarding of submissions by companies and others who are required by law to file forms with the U.S. Securities and Exchange Commission(the "SEC"). The database is freely available to the public via the Internet (Web or FTP).

Disclosure and Privacy Issues

Instead, later SEC proposed requiring disclosure of ranges or categories rather than exact information with respect to the obligor’s credit score, income and debt.
Also SEC considers whether sensitive asset-level data to be made available to investors and potential investors directly by the issuer on a website, rather than being filed on EDGAR.
Under the SEC proposed approach, asset-level information that does NOT implicate privacy concerns would still be filed on EDGAR and made available to the general public.

Purpose
  • This approach allows SEC to get away from the need to resolve the privacy law issue in particular the Fair Credit Reporting Act.
  • Fair Credit Report Act limits the ability to share some asset level data but in exception for disclosure to potential investors
  • The SEC staff believes that issuers are best suited to determine who is a potential investor and whether the chosen method of dissemination falls within the exception.
Opposition
  • The privacy issue does *NOT* disappear since issuers have to implement their own procedures of information delivery and privacy controls. E.g. by requiring user registration and accepting an agreement not to reverse engineer the data. 

Disclosure of Cashflow and Simulator

Additionally the proposal requires issuer to file waterfall computer program giving effect of flow of funds from the assets to the investors.
E.g.: how borrower’s loan payments are distributed, how losses are divided among investors, when administrative expenses are paid to service providers
The computer program would be filed on EDGAR in the form of downloadable source code in Python.

Investors could use the computer program to:
  • perform cash flow simulations (based upon assumed interest rates, default rates, prepayment speeds, etc.), 
  • generate present value estimates for ABS and 
  • monitor ongoing performance. 

Purpose
  • The computer program is intended to provide investors with a tool to perform their own quantitative analysis and be less dependent upon third parties.
Opposition
  • The requirements for the “waterfall” program are not clear so far.
  • Commenters also raised liability concerns. 

Privately-Issued Structured Finance Products

Require that in any private offering of “structured finance products” investors have the right to obtain all of the same initial and ongoing information as if the offering were SEC-registered.
Private are offerings made in reliance on Rule 144A under the Securities Act of 1933
However, according to the most recent comments it suggests that asset-level disclosure in the private market will not be driven by Regulation AB II, but by investor demand
Whether new disclosure requirements for Rule 144A offerings will be included in the final rules when adopted by the SEC remains to be seen.

References

  1. Re-Opening of Comment Period for Asset-Backed Securities Release, SEC Release Nos. 33-9552, 34-71611, available at https://www.sec.gov/rules/proposed/2014/33-9552.pdf
  2. Asset-Backed Securities; Proposed Rule, SEC Release Nos. 33-9117, 34-61858, 75 Fed. Reg. 23328 (May 3, 2010), available at https://www.sec.gov/rules/proposed/2010/33-9117fr.pdf 
  3. http://www.bingham.com/Alerts/Files/2010/04/A-Guide-to-the-SECs-Proposed-Revisions-to-the-Rules-and-Forms-for-Offerings-of-Asset-Backed-Securities 
  4. Re-proposal of Shelf Eligibility Conditions for Asset-Backed Securities and Other Additional Requests for Comment, SEC Release Nos. 33–9244, 34–64968, 76 Fed. Reg. 46948, Aug. 5, 2011), available at https://www.sec.gov/rules/proposed/2011/33-9244fr.pdf
  5. http://www.bingham.com/Alerts/2011/08/SEC-Re-Proposes-Shelf-Eligibility-Conditions-and-Filing-Requirements-for-Transaction-Documents-in-Offerings-of-Asset-Backed
  6. http://www.bingham.com/Alerts/2014/01/SEC-to-Consider-Adopting-Regulation-AB-II-on-February