Delta One

Delta One desks focus on ‘delta hedging’, a very common investment-banking activity. Usually it refers to the way a bank hedges its long and short exposures across a portfolio of investments that may include assets such as shares, as well as derivatives such as futures and options.

To make a portfolio ‘price neutral’, you need an overall ‘delta’ of zero. That means for every 5% your long positions gain (say stocks you own), your short positions (created using, for instance, short futures or put options) also lose 5% and vice versa, so your overall gain or loss is zero.

In reality, perfect delta hedges are hard to achieve and maintain. In the UBS case, some trades may not have been delta hedged at all.

MoneyWeek magazine

Latest issue:

Magazine cover
The future of motoring

Profit as cars get connected

The UK's best-selling financial magazine. Take a FREE trial today.
Claim 4 FREE Issues
Shale gas 'fracking' promises to transform Britain's energy market. Find out what it is, what it means, and how to invest.

More from MoneyWeek

FREE REPORT:
What you should really do with your money (2014 Edition)


How to buy and sell penny shares

A beginner's guide to investing in gold

How to invest in British fracking