Short selling - Shorts changed - Regulators across the globe introduced temporary short-selling rules in September in an attempt to halt the slide in bank stock prices. The ban has expired in a few jurisdictions, but some dealers suggest the effects may be long lasting.

PENSION FUNDS: Driven to distraction - Faced with widening deficits, the London Pension Fund Authority undertook an in-depth review of its investment strategy last year. The result was a fundamental overhaul of its investment portfolios. How successful has the new strategy been?

Sawyer, Nick, (2006)

Market and credit risk - The shock of the interaction - Many firms have historically measured risk types separately and aggregated the results. But the financial crisis has highlighted that credit and market risk are closely linked. What are the challenges to measuring these risks on an integrated basis?

Sawyer, Nick, (2009)

Documentation risk - Standard time - The events of September and October highlighted that many financial institutions are uncertain how their Isda master agreements would be affected by the distress or failure of a counterparty. How are derivatives participants responding?

Sawyer, Nick, (2008)