Rolling

Rolling a contract is an investment concept meaning trading out of a contract and then buying the contract with next longest maturity, so as to maintain a position with constant maturity.

## Contents

* 1 Motivation
* 2 Examples
* 3 Index roll congestion
* 4 See also
* 5 References

## Motivation

One may roll a contract because one has a special preference for a specific maturity—for example, the five-year CDS rate of a given name—or because a given on-the-run security is more liquid than off-the-run securities.

## Examples

While holding US Treasuries, one may wish to hold only the most recently issued security of a given maturity, the so-called on-the-run security. Thus, if one has purchased the on-the-run 30-year treasury and a new 30-year auction occurs, one may sell the old treasury, which is now off-the-run, and purchase the new on-the-run treasury.

There is generally very high trading activity on these dates, as contracts whose maturity falls on them are rolled.

## Index roll congestion

When an index has a published policy for rolling its contracts, such as on a given day or over a given period, a trading strategy is to roll in advance of the index, in anticipation of its trading volume. This is referred to as index roll congestion.

## See also

* Jelly roll (options)
* Rollover (foreign exchange)

## References

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