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Year-end thin markets and the funding squeeze

Late December is peculiar. Traders are away, books are closed, and the market is thin. Then the year-end funding squeeze shows up, with cross-currency basis spreads widening and dollar funding getting expensive.

The result is irregular price action in dollar pairs, especially the yen and the euro crosses. Spreads can double. Moves that would be absorbed on a normal day stretch further.

Many scalpers think of the holiday period as quiet and tame. The quiet is real on most days. The exceptions are sharp, and they happen with little warning.

Also, many brokers adjust their trading hours and margin around the holidays. A platform that is usually available at 02:00 might be offline for maintenance, and leverage might be reduced.

A prudent scalper treats the period as a different market with its own rules, and checks broker announcements before relying on normal behaviour.

What changed in spreads and execution during the last holiday period, and was the strategy adjusted in advance?

At the end of each quarter, banks adjust balance sheets for reporting, and the market for borrowing dollars through FX swaps tightens. The cost of borrowing dollars via currency swaps can jump, particularly at year-end.

That doesn't directly show up on a spot chart, but spot reacts. Dollar demand rises, and the greenback can strengthen against currencies whose holders need to swap into dollars. The effect is usually modest. In stressful times, it gets sharp.

For a scalper, quarter-end days can look like random moves. A dollar bid appears without news, fades, then returns. Liquidity can turn patchy in the final hour of the day, and the usual patterns misfire.

Funding stress also correlates with wider spreads, since liquidity providers charge more for carrying risk through those dates. Brokers may widen markups.

Tracking cross-currency basis spreads is a specialist task, but a rough approach is to note which days are quarter-ends and check how the strategy performed on them compared with an ordinary day.

One practical angle is the calendar. Quarter-end dates, along with the month-end, are known in advance, so a shaded line on the chart or a calendar alert costs nothing. After a year of marking them, a review of those days against ordinary days tells whether the strategy suffers, benefits, or doesn't care.

Do the last two days of a quarter look different in a trade history than a typical day?