The London 4 PM FX Fix in an ICT Session Plan

At four o’clock in London a chart can cross an old high, pause and give back the move. A trader looking at the wick may call it a textbook liquidity raid. A portfolio manager may simply want a valuation aligned with a recognised currency benchmark. The public chart cannot identify which order created the wick.

For an ICT session plan the London fix is a scheduled institutional reference. It lets you frame observations around a known time and compare like sessions. The direction and executability of the next trade still come from observed prices, spreads and a defined confirmation rule.

What the WMR London fix measures

Benchmark-related valuation and execution can concentrate attention around a common time. A trader can mark the preceding high and low and observe how spreads, travel and reversals behave near the event. The calendar alone supplies no directional bias. A month-end label also cannot disclose the size or direction of benchmark orders.

WMR benchmark administrator and methodology

Why the distinction matters for order flow

Month-end rebalancing stories can be particularly attractive in hindsight. Save month-end as a calendar flag before classifying the move and retain ordinary fixing days and quiet examples. A study made entirely of spectacular last-business-day reversals cannot estimate how often a routine intraday entry would be available.

How to identify it on a chart

Place a vertical line at 16:00 Europe/London. In Accra that is 16:00 in UK winter and 15:00 in British Summer Time. Separately define the observation band around it. A classroom window from ten minutes before to ten minutes after is a research choice and carries no claim to reproduce the administrator’s calculation.

Imagine a pre-fix high at 1.08846. At 15:59 London a bid touches 1.08851, and at 16:04 a candle closes at 1.08829. That sequence documents an external visit and a return to the original side. It does not provide the official rate or establish a sell fill. A later break and retest can be evaluated after those events become known.

Separate the benchmark clock from the broker quote

In this winter worksheet the event is at 16:00 London and 16:00 GMT. Freeze a pre-event bid high of 1.09361. The exercise pauses new orders from 15:50 inclusive to 16:10 exclusive and requires a new structural signal after that pause. These are study boundaries.

The pre-event approach. Record a near visit and the approaching cancellation time. A planned entry window with two minutes remaining may be too short for a completed trigger and retest even if the price is relevant.

First cross inside pause. The price event is observed and the execution filter remains closed. A future journal reviewer needs both fields to see why a visually clean sweep produced no eligible order.

Clock instant. Write the broker and quote side beside this number. A benchmark study requiring the administrator’s published rate needs that separately sourced value before computing any deviation from the fix.

Window ends. A pre-existing shift that formed inside the pause cannot be promoted to a fresh after-window signal under this protocol. Start watching for new evidence at the reopening.

Fresh confirmation. Check the original destination and execution spread again. If the objective traded while orders were paused, choose a newly justified plan or record the rest of the session as a pass.

How would the time labels change on a July chart in Accra?

Subtract one hour from London local times. The same study pause becomes 14:50 to 15:10 GMT. Convert the whole interval, including formation timestamps, before computing the first eligible return.

How to trade the setup in a paper session

Write a policy for resting orders before the fix. A paper model can cancel them ahead of its observation band and require a fresh structure shift after the band ends. A separate model can allow orders through it using recorded two-sided quotes. Score each policy on its own qualifying paths.

The charts use constructed five-minute bid candles. The two the london fix exercises below share a bracket order as a comparison point. Each shows when an ICT displacement clears a local swing, when a fair value gap becomes measurable and which later quote can fill it. All sample spreads, costs, outcomes and sizes belong to the hypothetical exercise.

Comparing month-end and ordinary fixing days

A portfolio valued against a named currency benchmark creates a reason for institutions to care about a shared time. The benchmark’s existence tells you little about the net direction of participants’ needs on a particular day. One account might buy while another sells. The spot chart exposes prices offered by its sources, while the size and balance of benchmark-related instructions remain largely private.

To study the time empirically, choose a pre-fix interval and a post-fix interval before reviewing any large moves. Freeze the pre-fix high and low, measure executable spread on comparable samples and record which boundary first trades. Add the date’s month-end status using a documented business-day calendar. Choosing the last dramatic move seen near a month-end as the marker would bias the sample before any order is simulated.

For a matched comparison choose ordinary fixing days from the same currency, clock regime and weekday where practical. Keep the identical pre- and post-event windows. Summarise both direction and distance. A larger range around an event does not by itself favour a reversal model. A reversal model needs a return, confirmation and an executable retracement after the excursion.

If the question is execution against the actual benchmark, retrieve the published rate and compare it with an actual client fill or a clearly modelled transaction. Specify the direction of the transaction and when the rate became available. Using the official value as a target before publication can introduce lookahead even though the fixing time was public in advance. A broker wick, a published rate and a client’s deal are three distinct observations that can share a similar timestamp.

EUR/USD worked example

A fresh order after the fixing pause

Freeze the pre-fix low at 1.08517. Set the desk clock to a UK winter day. By 16:10 the exercise’s 15:50 to 16:10 London pause has ended. Any pending order issued before the pause expired at its start. The marked level travels into this post-fix chart as a historical reference on the broker’s bid feed.

Price reaches 1.08494, then displaces through 1.08607. Both the structural break and the gap that will host the long form after the reopening. This order points toward 1.08762 on the chart. There is no need to infer the benchmark value from the wick, or to assign the local opposite flow to a particular portfolio manager.

Read the entry from left to right

Begin with the marked sell-side reference at 1.08517. The five-minute candle beginning 16:25 extends to 1.08494. At its close there is evidence of a visit and a new local low. The price that will become the upper edge of the execution gap is still in the future. A reader practising this live can put an alert on the opposing pivot at 1.08607 and leave the order ticket empty until the remaining conditions arrive.

At the close of the 16:35 candle the bid stands at 1.08626. Compare that with the earlier pivot. A completed shift now supports an upward delivery hypothesis, but the proposed three-candle imbalance still requires its third candle. The first candle’s high is 1.08558. The third candle’s eventual low is 1.08578. Their separation is 2.0 pips and their midpoint is 1.08568. The earliest next-bar activation on this tape is 16:45.

The order buys on the ask and the chart shows bids. With spread fixed at 1.0 pip, an ask of 1.08568 corresponds to bid 1.08558. The returning bid reaches 1.08544 and its matching ask reaches 1.08554. The workbook assumes continuous movement between displayed quote observations, sufficient available size and an execution at the requested limit. The same logic applied to a real broker order would still need the deal record to establish an actual fill.

Translate the chart into a position size

For a worked cash conversion, suppose the USD paper account assigns this candidate a maximum planned loss of $9.40. A standard lot of 100,000 base units on this USD-quoted pair changes by $10 for a one-pip move. One standard lot at the 8.6-pip stop distance plus 0.4 pip of estimated round-trip fees and other friction therefore exposes $90.00 at the modelled stop fill. The bid/ask condition already accounts for the stated spread.

Dividing the cash cap by that one-lot loss gives 0.1044 lots before volume rounding. With a permitted increment of one hundredth, rounding down gives 0.10 lot and $9.00 of planned downside. Check the conversion in reverse by multiplying size by loss per lot. A smaller order can make a wide structural stop affordable. It cannot supply missing room between entry and the intended liquidity destination, and a stop filled through its requested price can still exceed the estimate.

Reclassify one changed condition

Move the clock ten minutes earlier on a duplicate journal while keeping the price tape fixed. Re-evaluate each required timestamp against the desk’s freeze. An order can be ineligible because its source signal formed during the pause even if the eventual return quote appeared when the desk was trading again.

GBP/USD worked example

A fresh order after the fixing pause

Freeze the pre-fix high at 1.26529. Set the desk clock to a UK winter day. By 16:15 the exercise’s 15:50 to 16:10 London pause has ended. Any pending order issued before the pause expired at its start. The marked level travels into this post-fix chart as a historical reference on the broker’s bid feed.

Price reaches 1.26556, then displaces through 1.26428. Both the structural break and the gap that will host the short form after the reopening. This order points toward 1.26221 on the chart. There is no need to infer the benchmark value from the wick, or to assign the local opposite flow to a particular portfolio manager.

Audit the sell order from the dealing side

The first local buy-side reference at 1.26529 has a different job from the swing whose closing break confirms the bearish move. Compare the observed high of 1.26556 with that first price, then inspect the later close at 1.26406 relative to the pivot at 1.26428. One comparison describes location and the other supplies direction. Combining them into a single retrospective arrow would hide the point at which the trader actually gained the new information.

A bearish fair value gap forms when the later high remains below the earlier low in the three-candle sequence. Here the low of the candle starting 16:35 is 1.26484. The high of the candle starting 16:45 is 1.26460. The middle of their 2.4-pip interval is 1.26472. The sell limit becomes available once the second boundary is known. On the returning candle the maximum bid is 1.26499, high enough for the paper limit under the stated fill convention.

A sell opens on the bid, but the position ends by buying on the ask. For an ask stop at 1.26569 the bid needs to reach only 1.26562 with the assumed 0.7-pip spread. An ask target at 1.26221 requires a bid at or below 1.26214. Marking the two bid equivalents before scoring the last candle prevents a visually attractive wick from becoming a profit that the executable side never offered.

Reconcile the terminal candle

The first deciding bar opens at 17:10 GMT. Its bid ranges from 1.26184 to 1.26360. Adding the model spread gives an ask range from 1.26191 to 1.26367. Follow the tape from the fill and stop at the first executable exit. Here the original bracket reaches its target before the other terminal price. The closing body can finish away from that exit without changing the realised trade.

As a sensitivity check, leave the chosen fill sequence intact and increase extra round-trip costs by 0.5 pip. Possible net reward becomes 24.1 pips and possible downside becomes 10.7 pips, giving risk:reward of 1:2.25. This calculation isolates a change in charges. A different spread can alter whether the original sell or its buy-to-close orders were ever executable, which calls for a new quote-by-quote replay.

Reclassify one changed condition

Move the clock ten minutes earlier on a duplicate journal while keeping the price tape fixed. Re-evaluate each required timestamp against the desk’s freeze. An order can be ineligible because its source signal formed during the pause even if the eventual return quote appeared when the desk was trading again.

Test which part of an order the desk pause constrains

Take five independent practice records and apply two predeclared policies. A requires both the signal and fill after the 16:10 London reopening. B requires only the fill after 16:10 London and allows an earlier signal. In this exercise “yes” means the named condition occurs within the stated opportunity. A row can satisfy both conditions, satisfy one, fail both, or leave a condition unresolved. Score the evidence supplied before imagining how the rest of the chart might behave.

Work through the disagreements

Signal at 16:12 and fill at 16:18. The confirmation and executable retracement both occur after the study pause.

Signal at 16:04 and fill at 16:14. The price can be dealt later, but the stricter rule requires the causal signal itself to be fresh.

Signal at 16:02 and fill at 16:08. Both policies exclude a fill during the observation band.

Signal at 16:10 exactly and fill at 16:11. The exercise treats the reopening boundary as inclusive. The signal must already be complete at that timestamp.

Fill at 16:16 with signal formation time missing. The fill-time test is settled while the stricter chronology still lacks its required evidence.

In these constructed observations, A gives 2 confirmed yes, 2 confirmed no and 1 unresolved. B gives 4 confirmed yes, 1 confirmed no and 0 unresolved. Among the 4 rows settled for both rules, they agree on 3 classifications. Agreement here concerns qualification under the stated definitions. No return series has been supplied for these five records, so the counts cannot estimate the profitability of either policy.

Resolve the missing evidence

Obtain the confirmation candle’s UTC closing timestamp and convert it to Europe/London on that date. Until that information is available, the possible number of positive A classifications is 2 to 3 out of five. For B the corresponding count is 4. Preserving bounds stops an unresolved record from entering the journal as a known failure merely because obtaining the source data was inconvenient.

Applying the worksheet on a new session

Build the session from the clock that owns it

Start the research log with a date in Accra and the source city’s date for the same instant. A local evening can belong to a new trading day on the broker’s template. A weekly or monthly divider can appear at a different hour from New York midnight. Store both the server timestamp and the UTC conversion for the first included and first excluded observations. This makes the original measurement reproducible on another display.

Ghana uses GMT throughout the year. With an ICT London Kill Zone defined as 02:00 to 05:00 New York, the corresponding Ghana interval is 07:00 to 10:00 in US standard time and 06:00 to 09:00 in US daylight time. A 07:00 to 10:00 New York Kill Zone becomes noon to 15:00 GMT in winter and 11:00 to 14:00 in summer. New York midnight appears at 05:00 GMT or 04:00 GMT respectively. A London-local event follows the UK clock instead.

Choose a single interpretation for bar stamps. A five-minute bar labelled 08:25 by its opening time represents the interval up to 08:30. A rule requiring that bar’s closing price can use it only as the interval ends. If the next order is assumed active immediately, record that assumption explicitly. In a real account, the platform’s acknowledged order time and actual dealing quote determine whether the apparent return was available.

Choose the source for the observation and for the order

Record the symbol, venue or broker, source timezone, quote convention and sampling interval for each input. A tick stream can contain last trades, bids and asks, or a subset of these. A candle’s high represents the maximum of whatever field constructed it. It follows that two apparently identical charts may answer different questions before any discretionary interpretation enters the picture.

For a multi-source test, define the permitted age and alignment of observations. A last quote can remain visible while another feed updates several times. Pairing both visible values as if they were simultaneous can manufacture a divergence. Store each quote’s original timestamp and reject or flag combinations outside the predeclared tolerance. The same discipline applies when comparing prior reference windows as well as the immediate signal.

Use the execution venue for actual fills. A separate analytical series can still be appropriate for choosing location or direction if the rule declares it. The order then has its own submission record, active lifetime, bid or ask trigger and terminal deal. Keeping those records separate lets you find a useful analytical signal even when the price printed on its source was never directly available to the broker account.

Check a proposed rule on dates it never helped select

Use an early block of dates for developing a measurement and a later block for evaluating the frozen version. Record the date of each change to the signal, spread filter, stop rule or target. A chart that helped you choose a threshold is already part of model development even when no order was ever placed on it. Keep the distinction visible when presenting a result as new evidence.

Review dependence as well as the number of tickets. Several exposures to the same US dollar event can generate similar wins or losses in a single hour. Summarise by week or session as a check on a trade-level average. Preserve extraordinary days in the actual ledger and separately show what happens to the descriptive statistic without one influential observation. That sensitivity exercise is different from editing the official return after seeing it.

For a disagreement between two candidate policies, request the input that would settle it before opening the future price path. If the disagreement concerns a missing source quote, a later winner cannot supply that quote. If both readers reproduce the same inputs and still classify the case differently, tighten the decision wording and record a new version. Apply that revision to future evidence, then compare it fairly on an agreed research sample.

Use separate notes for benchmark and price behaviour

For one month-end session, write down the provenance of each price you will need. One comes from the broker before the observation band, another from the trader’s actual or simulated deal, and a third may come from the benchmark administrator after publication. Record their units, sides and availability times. Only the first category of price can be used for a pre-event chart reference under this exercise.

Review the same set of observations as a trader and as someone measuring execution quality. The trader asks whether a qualifying swing break and return occurred after the permitted time. The execution review asks how a specific transaction compares with its declared benchmark. A clean answer to either question can coexist with missing evidence for the other. This distinction makes the London fixing time a practical institutional reference without treating every wick near it as a signal.

Frequently asked questions

Continue the chart exercise with the school’s guides to the London Kill Zone and the Judas Swing for session context. Use market structure shifts to locate the confirmation, fair value gaps to mark the return interval, and order blocks to relate the smaller trade to its larger price area.