CA-4.3.22

As an alternative to the use of standard haircuts, CBB may allow conventional bank licensees to use a VaR models approach to reflect the price volatility of the exposure and collateral for repo-style transactions, taking into account correlation effects between security positions. This approach would apply to repo-style transactions covered by bilateral netting agreements on a counterparty-by-counterparty basis. At the discretion of CBB, firms are also eligible to use the VaR model approach for margin lending transactions, if the transactions are covered under a bilateral master netting agreement that meets the requirements of Paragraphs CA-4.3.17 and CA-4.3.18. The VaR models approach is available to conventional bank licensees that have received CBB's recognition for an internal market risk model under Chapter CA-14. Conventional bank licensees which have not received CBB's recognition for use of models under Chapter CA-14 can separately apply for CBB's recognition to use their internal VaR models for calculation of potential price volatility for repo-style transactions. Internal models will only be accepted when a conventional bank licensee can prove the quality of its model to CBB through the backtesting of its output using one year of historical data.

CA-4.3.23

The quantitative and qualitative criteria for recognition of internal market risk models for repo-style transactions and other similar transactions are in principle the same as in Chapter CA-14. With regard to the holding period, the minimum will be 5-business days for repo-style transactions, rather than the 10-business days in the Market Risk Amendment. For other transactions eligible for the VaR models approach, the 10-business day holding period will be retained. The minimum holding period should be adjusted upwards for market instruments where such a holding period would be inappropriate given the liquidity of the instrument concerned.

CA-4.3.24

The calculation of the exposure E* for banks using their internal model will be the following:

E* = Max {0, [(∑E – ∑c) + VaR output from internal model]}

In calculating capital requirements banks will use the previous business day's VaR number.

CA-4.3.25

[This paragraph was deleted in January 2015.]