A pricing period spreads one price across many days, so no single quotation decides the cargo. The price then fixes one slice per publication day, and the hedge has to shrink on the same days, at the same moments, against the same days its own instrument averages over.
A pricing period spreads one price across many days. Instead of taking the market on a single date, the contract averages the quotations published over a stretch of days, so that no single print decides what the goods cost. That choice has consequences that outlast the negotiation. The length of the period decides how much any one day matters and how long part of the price stays open. The price is then fixed one slice per publication day, at the moment each quotation is assessed, so the exposure falls in steps rather than all at once. A hedge has to fall in the same steps, on the same days and as close as possible to the same moments. And the instrument used to hedge has a pricing period of its own, which the cargo's period rarely matches.
This article sets out what a pricing period does to a position from the day it opens to the day it closes: why contracts average at all, what the length of the average trades away, how the price closes slice by slice, what a hedge has to do to keep up, where the timing within each day matters, and what has to be recorded so that the daily steps can be checked rather than remembered. It is written for the people who carry a priced position through its period: the traders and risk managers who hedge it, the middle office who report how much of it is priced, and anyone who has had to explain a hedge result that did not match the cargo it was meant to offset.
If you want the mechanism from the beginning, start with An average replaces one day's price with many, so no single quotation decides the cargo. If you already hedge priced cargoes and want the part that leaks quietly, start with A hedge instrument has a pricing period of its own, and the cargo's rarely matches it.
An average replaces one day's price with many, so no single quotation decides the cargo
Averaging over a period is a protection both parties agree to. It stops one unusual day, one disputed print or one party's choice of timing from setting the price of the whole quantity.
A single-day price is simple to state and fragile in practice. If the price of a cargo were the quotation on one named date, everything about that date would matter: a thin day, a holiday-shortened session, a surge in one direction that reverses the next morning, or a quotation later challenged as unrepresentative. Whoever could influence the timing of that date would also hold an advantage the other party had not agreed to give.
An average dilutes all of that. Each day in the period contributes only its share of the final price, so an unusual day moves the result by a fraction of its own move. Neither party can pick the day, because there is no single day to pick. And where the goods themselves move over a stretch of time, as they do in steady deliveries through a month, an average over the same stretch makes the price follow the flow of the goods rather than a moment chosen in advance.
None of this is controversial, which is why averaging is common in physical trading. The consequences get less attention, because they arrive later and land on different people from the ones who negotiated the period.
A longer period makes the price depend less on any one day and keeps part of it open for longer
Lengthening a pricing period reduces the weight of each day and extends the number of days on which the price is still being fixed. It moves the risk from what happens on a single day towards how far the market drifts across many days, and it keeps an unpriced remainder on the book until the last of them.
A short period puts a lot of weight on a few days. The realised price can land far from the level that prevailed before or after, because a handful of quotations decide it. A long period spreads the weight thinly, so no single day can move the result very far, but the price is not complete until the period ends, and every day until then carries a portion of exposure that has not yet been fixed.
Which is better depends on what the price is being matched against. A period that mirrors the timing of the matching sale or purchase locks a margin more closely than one that is merely smoother. A period much longer than anything the hedge can track leaves an open remainder that nobody is managing. The length is easy to treat as a market convention, and it is one. It is also a risk decision, made at the moment the trade is agreed, and it decides what everyone downstream will have to do every day until the period closes.
The period fixes the price one slice per publication day, and the exposure falls in the same steps
A pricing period does not price the goods at its end. It prices a slice of them on each day a quotation is published, so the exposure falls in a staircase from fully open to fully fixed, and on any day in between the position is partly priced.
On the first publication day of the period, the share of the price that rests on that day's quotation becomes known and can no longer move. On the second day another share becomes known, and so on until the last. A quantity priced over a period of several publication days is therefore not one exposure that disappears on a date. It is a series of smaller exposures that disappear one at a time.
The steps are not always equal. If the period counts only days on which the quotation is published, a holiday removes a step and the remaining steps grow. If the period is anchored to an event that has not yet happened, such as a loading date, the staircase cannot be drawn until the event occurs, and until then the whole quantity is open. If the period is elective, the staircase depends on a declaration someone has not yet made. In each case, how much of the position is priced today is a calculation from the period's rules and the calendar, not a field that anyone types.
How much of a trade is priced on a given day, and why that differs from how much inventory you hold, is worked through on both sides of a trade. Price Exposure: Why What You Own Is Not What You Are Exposed To
A hedge has to be reduced on the same days, in the same amounts, or it hedges a position that no longer exists
A hedge placed against an unpriced quantity is correct on the day it is placed. As the period prices, the quantity it was protecting shrinks one slice at a time, and a hedge left at its original size becomes an open position in the opposite direction.
The usual approach is to reduce the hedge in step with the period: on each publication day, the share of the hedge that matches the slice just priced is closed. Done this way, the price the hedge closes at and the quotation that fixed the slice are taken from the same day's market, and the two largely offset. This is often described as the hedge pricing out alongside the cargo.
Each departure from that rhythm leaves something behind. Closing the whole hedge on the first day of the period leaves the rest of the period unhedged. Closing it on the last day leaves the hedge fully open while the cargo has been pricing for days, so the hedge result reflects the market on one day and the cargo price reflects the average. Closing it in uneven amounts because a holiday was not noticed, or because a slice was counted twice, leaves the hedge a slice too large or too small, and that difference is a position nobody intended to hold.
The arithmetic of each step is simple. The difficulty is that it has to be performed on every publication day of every open period, for every priced quantity, and the result of skipping one day is not an error message. It is a small open position that shows up later as a hedge result nobody can explain.
Each slice is fixed at the moment the quotation is assessed, and a hedge reduced at another moment keeps the move in between
A daily quotation describes the market at a particular time of day. A hedge reduced at a different time of day is closed at a different price, and the difference between the two moments is a residual that averages into the result over the whole period.
Many published quotations reflect the market at a stated time, often around the close of a trading session. A slice of the period is fixed at that level. A hedge closed earlier in the day, or in another time zone's session, is closed at whatever the market was at that moment. On a quiet day the two are close. On a day the market moves sharply in the hours between them, they are not, and the hedge and the slice no longer offset.
Over a full period these residuals are not guaranteed to cancel. They can run in one direction if the hedge is consistently reduced at a time of day when the market tends to differ from the assessment, and they are invisible in any report that records only the date of each step. The practical question for a desk is not whether the hedge was reduced on the right day, which is easy to check, but whether it was reduced at a moment close enough to the assessment for the two to be the same price, which a record of dates alone cannot show.
A hedge instrument has a pricing period of its own, and the cargo's rarely matches it
A futures position that is closed takes the price of the moment it is closed. An average-price swap settles against the average of its own reference days, commonly a calendar month. A cargo priced over a window around an event, or over a period that does not coincide with either, is hedged by an instrument that averages over different days, and the difference between the two averages is a position.
This is the point at which a hedge that looks complete can still leave a residual. Suppose a cargo is priced over a few publication days in the middle of a month and hedged with a swap that settles against the whole month's average. Both are averages of the same quotation. They are averages over different days. If the market rises through the month, the swap's average and the cargo's average land in different places, and the hedge result does not offset the cargo price by the amount it was meant to.
The same is true in reverse. A steady monthly delivery priced on the calendar-month average is matched naturally by a calendar-month swap, and badly by a futures position closed on one day. A window anchored to a loading date that slips into the following month is matched by neither the swap it was originally hedged with nor the futures month it was originally booked against.
For physical crude, the gap between a pricing window and the futures contract months a hedge is dated to is worked through cargo by cargo. Crude Oil Trading: Why the Barrel You Hedge Is Not the Barrel You Own
The useful question for any hedged quantity is not only whether the hedge is the right size, but which days it averages over and which days the cargo averages over. Where those two lists differ, the hedge is incomplete by exactly the difference, and the difference only becomes visible when both have priced.
Where the daily steps are done by hand, a missed day leaves the hedge one slice too large and nothing reports it
The pricing schedule of an open period, which slice priced today, how much of the hedge to close and at what time, is a daily task. Where it is kept in a workbook and performed by a person, its failures are omissions rather than errors, and omissions do not announce themselves.
The contract and the trade record describe the period in words: a description of the window, the anchoring event, the quotation. Where the system does not compute the daily schedule that turns those words into dated slices, it is worked out by whoever manages the hedge, in a sheet that lists the publication days and ticks them off. That arrangement works while the same person is at the desk every publication day and while the number of open periods is small enough to hold in view.
It fails in ordinary ways. A holiday in the quotation's calendar that is not a holiday in the desk's calendar. A loading date revised after the schedule was drawn. A person away for a day when three periods each had a slice to price out. None of these produces an error anywhere. Each produces a hedge that is slightly the wrong size for a few days, and a hedge result at the end of the period that differs from the cargo price by an amount that has to be reconstructed from the sheet, if the sheet still says what happened on each day.
Five ways to define a pricing period, and what each one asks of the hedge
| Calendar month average | Window around an event | Window after an event | Lagged average of earlier months | Elective window | |
|---|---|---|---|---|---|
| What fixes its dates | The calendar | The event's date, such as loading, when it happens | The event's date, when it happens | The calendar, offset before delivery | A declaration by the party holding the choice |
| Known before the trade starts | Yes | No, until the event | No, until the event | Yes | No, until the declaration |
| How the exposure falls | Evenly across the month's publication days | Over a few days near the event | Over a few days after the event | Before the goods move | Over the declared days |
| What matches it naturally | A swap on the same calendar month | Nothing standard. The hedge has to be reduced day by day | Nothing standard. The hedge has to be reduced day by day | A swap on the same months | Nothing until declared |
| Where it slips | A holiday changes the count | The event moves, and the window moves with it | The event moves, and the window moves with it | Rarely. The dates are fixed in advance | The declaration is late, or not recorded |
Read across the second row. Only two of the five periods have dates that are known when the trade is agreed, and they are the two with a natural hedge. The other three cannot be scheduled until something happens, and until then their hedge is a guess about when.
A pricing period has to be recorded as seven things before its hedge can be checked
| The record states | Which question it answers | What happens when it is missing |
|---|---|---|
| The anchor of the period: a calendar month, an event, or a declaration | When the dates can be known | The schedule is drawn before its anchor exists |
| The period's dates, once known, as a list of publication days | Which days fix the price | Each person counts the days for themselves |
| The calendar the days are counted on | Which holidays remove a slice | The quotation's holiday is missed |
| The quotation and the time of day it is assessed | Which moment fixes each slice | Hedge steps are taken at another moment |
| The quantity fixed per publication day | How large each step is | Steps are rounded, doubled or skipped |
| The hedge against it, with its own reference days | Which days the hedge averages over | The difference between two averages goes unseen |
| For each day, whether the slice priced and whether the hedge step was taken | Where the position stands today | A missed step surfaces only when the period closes |
The last row is the one a description of the period does not contain. The first six describe the period. The seventh is the record of whether the period was followed, and it is the only one that lets anyone check the hedge before the result arrives.
Questions people ask about this
What is a pricing period in a commodity contract?
It is the set of days whose published quotations are used to set the price of a trade, usually by taking their average. The contract defines it, for example as a calendar month, as a number of publication days around an event such as loading, or as days declared by one party. The price is not known until the last day of the period has passed. Until then, the trade is partly priced, with one more share of the price fixed on each publication day.
What is the difference between a pricing period and a delivery period?
The delivery period is when the goods move. The pricing period is when the price is set. They can coincide, as in steady monthly deliveries priced on that month's average, but they often do not. A cargo can be priced over a few days around its loading date, or over months before delivery, or over days declared later. Treating the two as the same leads to hedges dated to the delivery period while the price is being fixed on other days.
Why do contracts use an average price over a period instead of a single day's price?
Because an average makes the price less dependent on any one day. A single unusual quotation, a thin trading day or a disputed print affects an average only by its share, and neither party can choose a favourable day when the price is spread across many. Where goods move steadily over time, an average over the same days also makes the price follow the flow of the goods. The cost is that the price is not fully fixed until the period ends.
How do you hedge a cargo that is priced over a period of several days?
The common approach is to hedge the full quantity before the period starts, then close the hedge in equal steps on each publication day of the period, matching the slice of the cargo that prices that day. Done on the same days and close to the time the quotation is assessed, the hedge and the cargo price largely offset. Departures from that schedule, closing early, late, at another time of day or in the wrong amounts, leave a residual that shows up when the period closes.
Why doesn't our average-price swap offset the cargo price exactly?
Usually because the swap and the cargo average over different days. A swap commonly settles against the average of a calendar month, while a cargo may be priced over a few days within that month, across a month end, or around an event that moved. Both are averages of the same quotation, taken over different days, and they differ whenever the market moves across the month. Comparing the swap's reference days with the cargo's pricing days, side by side, shows where the residual comes from.
Is a longer pricing period less risky than a shorter one?
It is less sensitive to any single day, and it keeps part of the price open for longer. A longer period reduces the chance that one unusual day sets a price far from the surrounding market, but it means the position is not fully fixed until later, and it may extend beyond the period any available hedge covers. Whether that is less risky depends on what the price is matched against: a period aligned with the matching sale or purchase can matter more than its length.
What happens if the event that anchors the pricing period moves?
The period moves with it. If a window is defined around a loading date and loading is delayed, the publication days that fix the price change, and the hedge that was scheduled against the original days no longer matches. Until the event actually happens, the period's dates are a forecast, and the whole quantity remains open. A revised event date has to reach whoever runs the daily hedge schedule on the same day it is known, or the next steps are taken against the wrong days.
How can we check whether our hedges are following our pricing periods?
Take one period that has recently closed and list its publication days. Next to each day, write down whether the slice priced, how much hedge was closed, and at what time. Then compare the hedge's own reference days with the cargo's. Days on which the slice priced but no hedge step was taken, steps taken at a different time from the assessment, and reference days that differ between hedge and cargo are where to look for the gap between the hedge result and the cargo price.
Where this lands in a trading system
Nothing above is an argument for buying software. It is an argument about what a pricing period requires every day it is open and where the record of each day is kept. Some of that maps onto system capabilities, and it is worth being specific about which parts.
The first conclusion is that a priced cargo and its hedge have to be read together, day by day, because each publication day changes both. That is the job of a CTRM/ETRM system providing complete trading lifecycle management for commodity traders, integrating physical trade, financial hedging, risk control, and settlement in one platform; Time Dynamics' Fusion is one, and the parts of it that bear on this article are complete physical trade lifecycle management and execution, advanced trading management for futures and derivatives markets and comprehensive risk assessment and monitoring capabilities. Holding the physical trade and the hedge in one place is the condition under which the priced share of one and the remaining size of the other can be compared on the same day.
The second conclusion is that the daily schedule, which days, which slices, which steps were taken, is kept in a workbook by whoever runs the hedge wherever the system does not compute it. That is what X-Ray addresses: a non-invasive data processing and analysis platform, whose collection toolkit XDK performs non-invasive automated data collection from databases, Excel files, and web interfaces, and which is built to collect data without disrupting existing systems or workflows. The last property matters here, because the person running the schedule is the one who knows which days counted, and the first step is to read their record rather than replace it.
The third conclusion is that the same open periods have to be seen by day, by quotation and by hedge instrument, so that a missed step or a mismatch between two sets of reference days is visible before the period closes. One-click generation of personalized reports with Excel-like interface, X-Sheet, is that kind of work.
One conclusion of this article is deliberately not mapped. Choosing the length of a pricing period, and deciding which hedge instrument best matches it, does not correspond to anything on the published capability list. Those are commercial and risk judgements, and the honest thing to do is leave them unmapped.
And here is where the rest stops. None of this chooses a pricing period or negotiates one. It does not decide when to close a hedge, at what time of day, or with which instrument, and it does not make an assessment and a hedge trade land on the same price. Those decisions stay with the desk. What a system can settle is narrower and duller: whether the dates of each open period are recorded as dates, whether the slice that priced today and the hedge step taken against it can be seen side by side, and whether a missed day is visible on that day rather than when the period closes. That is a real share of the problem. It is not all of it.
A note on the evidence in this article
There are no statistics in this article, and that is a decision rather than an oversight. The observations behind it, about how pricing schedules are kept and how often a hedge result differs from the cargo it offsets, come from material we are not in a position to publish as a citable figure. A number nobody could check would make the argument look stronger and make it worth less.
So the argument is made from the mechanism, and each step of it can be tested against your own book. Take three priced quantities whose periods closed recently. For each, list the publication days of the period, the quantity that priced on each, the hedge step taken on each day and its time, and the reference days of the hedge instrument. Mark the days where the slice priced and no step was taken, the steps taken far from the assessment time, and the days the hedge averaged over that the cargo did not. Those marks, and the gap between hedge result and cargo price they explain, are the finding. If your periods behave differently from what is described here, your periods are the better evidence.
Practice also varies by market and by contract. How a period is defined, which calendar it counts on, what time of day a quotation reflects and which hedge instruments are available are set by the agreements you signed and the markets you trade in. Where this article describes a mechanism, it describes the shape the mechanism takes, not the terms of any particular market or contract.
The price is fixed a day at a time. The hedge has to keep the same calendar.