G11 - Portfolio Choice; Investment Decisions

• How foreign central banks can affect liquidity in the Government of Canada bond market

  Staff Analytical Note 2024-26 Patrick Aldridge, Jabir Sandhu, Sofia Tchamova

  We find that foreign central banks own a large share of Government of Canada (GoC) bonds and tend to hold their positions for longer than other types of asset managers. This buy-and-hold behaviour could offer benefits. For example, foreign central banks may be less likely than other asset managers to sell bonds and add to strains on market liquidity in periods of turmoil. However, foreign central banks’ buy-and-hold behaviour combined with their minimal lending of GoC bonds in securities-financing markets, as observed in our available data, can potentially lower liquidity because fewer GoC bonds are available for others to transact in secondary markets. Indeed, we find that higher levels of foreign central banks’ GoC bond holdings are related to lower liquidity.

  Content Type(s): Staff research, Staff analytical notes Topic(s): Exchange rates, Financial institutions, Financial markets, Financial stability, Foreign reserves management, International financial markets, Market structure and pricing JEL Code(s): E, E5, E58, F, F3, F30, F31, G, G0, G01, G1, G11, G12, G15, G2, G23

• Is This Normal? The Cost of Assuming that Derivatives Have Normal Returns

  Staff Working Paper 2024-46 Radoslav Raykov

  Derivatives exchanges often determine collateral requirements, which are fundamental to market safety, with dated risk models assuming normal returns. However, derivatives returns are heavy-tailed, which leads to the systematic under-collection of collateral (margin). This paper uses extreme value theory (EVT) to evaluate the cost of this margin inadequacy to market participants in the event of default.

  Content Type(s): Staff research, Staff working papers Topic(s): Financial institutions, Financial stability JEL Code(s): G, G1, G10, G11, G2, G20

• Decomposing Large Banks’ Systemic Trading Losses

  Staff Working Paper 2024-6 Radoslav Raykov

  Do banks realize simultaneous trading losses because they invest in the same assets, or because different assets are subject to the same macro shocks? This paper decomposes the comovements of bank trading losses into two orthogonal channels: portfolio overlap and common shocks.

  Content Type(s): Staff research, Staff working papers Topic(s): Financial institutions, Financial stability JEL Code(s): G, G1, G10, G11, G2, G20