The Sunday to Thursday working week

The week the market keeps 

The currency market has no daily close. From the first Asian open of the week to the last New York close it runs as one continuous stretch, and the handovers between Tokyo, London and New York are changes in who is quoting rather than pauses in the quoting itself. What it does have is a weekly close, and that close is a convention rather than a fact of nature: the week is anchored to the New York close on Friday afternoon, and it begins again when Wellington and Sydney start quoting on Sunday afternoon New York time.

Two things follow from that anchoring for a reader in the Gulf. The first is arithmetic: a clock set several hours ahead of New York receives both events in the early hours of a local morning rather than at the end of an afternoon, so the market week opens and closes while the region is asleep. The second is subtler. Gulf Standard Time does not observe daylight saving and New York and London both do, so the offset between them is not a constant. It moves twice a year, on weekends the United States and Europe do not share, and the local time of the weekly open and close moves with it.

A related complication sits on the chart rather than in the calendar. A platform stamps each candle with a server time zone chosen by the firm rather than with the reader's local time. YAL runs MetaTrader 5, and both work this way, so a daily candle does not begin at local midnight and the boundary a chart draws between one day and the next is the platform's, not the region's.

Two calendars, laid over each other 

Most of the Gulf works Sunday to Thursday and rests on Friday and Saturday. The UAE is the exception: its federal working week runs Monday to Friday with a Saturday and Sunday weekend, and private employers there set their own hours, so a single regional desk can straddle both patterns. The market, for its part, works a Monday to Friday week in its own terms and rests from Saturday morning to Monday morning on a Gulf clock. Laid over each other, the two calendars agree on the middle of the week and disagree at both ends.

The disagreements are worth naming one at a time, because each produces a different mechanical consequence rather than a shared inconvenience. Sunday is a working day with no market. Friday is a market day that in much of the region is not a working day. The market weekend is a stretch of two days in which a position exists and a price does not. And the two holiday calendars are built from different sources, so they intersect only by coincidence.

Sunday, a working day with no market 

On a Sunday morning in Riyadh, Doha or Kuwait City the working week has started and the market has not. Nothing about that is a restriction a broker imposes. There is no price because the venues that make prices are shut: the bank desks that quote a currency pair are unstaffed, the exchanges behind an index or a share are closed, and a quotation with nobody standing behind it is not a quotation.

An instruction entered during this period is held rather than worked. It sits with the firm and becomes eligible to execute only once quoting resumes, and the price it eventually meets is whatever the market produces at the open rather than the last price of the week before. The same is true of a modification, a cancellation or a new stop level: the instruction is recorded against the position, and the market it refers to is not there to act on it.

One consequence is administrative rather than mechanical. Because the two weeks start on different days, the service side of a brokerage follows the market rather than the region. YAL support runs 24/5, which tracks the market week, so the hours when a question about a position can be answered and the hours when the region is at work are not the same set of hours.

Friday, a market day off the regional calendar 

Friday runs the mismatch the other way. In the Sunday to Thursday jurisdictions it is the first day of the weekend. In the market it is a full session carrying the London and New York overlap the previous lesson described, along with a large share of the week's scheduled economic releases. None of it pauses because a regional office is closed. A position opened on Thursday is exposed to Friday in full, the arithmetic that marks it to market does not consult a local calendar, and margin continues to be calculated against it exactly as on any other session.

Friday also has a shape of its own. Liquidity concentrates through the overlap and then falls away through the last hours of the New York afternoon as participants square positions before the weekly close. That final stretch is conventionally described as thin, which is a description of the book rather than a judgement about it: a quoted spread is the distance between the best resting bid and the best resting offer, and when fewer participants are quoting, that distance widens.

The weekend, when a position exists and a price does not 

Between the weekly close and the next open, an open position does not go anywhere. It remains a contract with the firm, its margin remains encumbered, and its stated profit or loss stays frozen at the last price of the week that ended. What stops is the pricing. The world does not stop with it. Elections are held, central banks speak, policy changes and companies announce, and events occur that would have moved a price had there been one to move.

The consequence is a gap. The first price of the new week is wherever participants are willing to quote once they reopen, and nothing obliges it to sit near the last price of the old one. Most weeks the difference passes unremarked. After a weekend event it can be large. The prices in between were never traded, because there was no market in which to trade them, so nothing resting in that range could have executed there. A gap is not a fast move. It is the absence of the moves that would ordinarily have joined two prices together.

Reading the two cases together is the point of the block. Nothing about the instruction changed, and nothing about it could have changed while the market was shut. That is what carry over risk describes: not the likelihood of an adverse gap, which nobody can state, but the structural fact that a position held through a closed market is held through a period in which no instruction attached to it can operate, in either direction.

Holidays, two calendars that intersect by coincidence 

Public holidays make the mismatch concrete twice over. The major regional holidays follow the Hijri calendar, so Eid al Fitr and Eid al Adha move through the Gregorian year rather than sitting on fixed dates, and their exact days are confirmed close to the time by observation. The market observes none of them. Currencies keep quoting, exchanges outside the region open as usual, and a position carried into a regional holiday is priced throughout it.

The reverse case is quieter and catches more people. Christmas, Boxing Day, Good Friday, Thanksgiving and the western New Year are ordinary working days across the Gulf and are closures or shortened sessions in London, New York and Tokyo. On those days the region is at work while the market is thin or absent, and the effect is not uniform across instruments. A share CFD or an index CFD inherits the holiday calendar of the exchange underneath it, and an exchange that is shut produces no price for the contract to reference, while a currency pair inherits the banking calendars of two countries at once and can keep quoting through the same day.

Because both calendars are published rather than derivable, the closures that apply to a given instrument on a given date are a matter of record rather than of reasoning. The current schedule sits on the answer on trading hours, and the longer treatment of the regional week is in the guide to the Sunday to Thursday week. A lesson cannot carry the dates themselves, because they change every year and a stale date is worse than no date.

Where practitioners disagree 

The first disagreement is about carrying a position through the weekend at all. One convention flattens everything before the weekly close, on the reasoning that a risk which cannot be worked is a different kind of risk from one that can. Holders of it acknowledge the cost in the same breath: closing and reopening pays the cost of dealing twice, gives up whatever occurs while flat, and turns the day of the week into a rule regardless of what the position was for. The opposing convention holds through, on the reasoning that gaps occur in both directions and that a rule keyed to the calendar says nothing about the instrument. Neither convention is evidence about outcomes, and no figure exists that would settle the argument.

The second concerns the first hours of the new week. Quoting resumes before the depth does, so the early stretch is conventionally described as thin, with wider spreads and less resting size at each level. One tradition treats the reopening as the most informative price of the week, because it is the first to incorporate everything that happened while the market was shut. Another treats it as the least representative, for exactly the same reason, and regards the London open as the first price worth reading. Both are descriptions of the same hours, and the disagreement persists because the evidence that would resolve it is not the kind that can be produced.

A third disagreement is regional and rarely written down. A review held on a Sunday covers a week that has already ended in a market that will not reopen until the following morning, and one held on a Thursday evening leaves the busiest session of the week outside it. Desks in the Gulf resolve that both ways, and neither resolution is standard practice, because the mismatch is a property of the calendar rather than a problem with a solution.