Pound jumps as dollar slips on AI jitters: long and short positions

The pound was the strongest major in the latest European Central Bank (ECB) reference rates. GBP/USD's fixing for 30 October rose 0.62% to 1.3399, up from 1.3317 a day earlier, as the dollar slipped on US midterm and AI worries, according to Investing.com.

The pound's fixing has now recovered from 1.3288 on 28 October. Investing.com also reports that UBS sees scope for further sterling gains because of short positioning, and separately that UBS sees Bank of England rate hikes supporting the pound against the franc. investingLive's week-ahead preview says the Bank of England is expected to raise rates next week. The bigger picture is mixed: Investing.com reports the dollar still rose for October as rate hike bets stayed elevated. Our sister site has more on that in why the dollar ended October higher.

What is a long or short position?

Every forex trade is a bet on one currency against another. You can take one of two sides.

• Going long means buying a currency pair. You gain if the pair rises. On GBP/USD, a long position profits when the pound strengthens against the dollar.
• Going short means selling a currency pair. You gain if the pair falls. On GBP/USD, a short position profits when the pound weakens against the dollar.

In forex, every long is also a short. Buying GBP/USD means buying pounds and selling dollars at the same time. Shorting it means the reverse.

Positioning describes how many traders are long or short in total. The UBS view reported by Investing.com links possible sterling upside to short positioning. The idea is simple: if many traders are short the pound and it rises, some of them may close their trades by buying pounds back. That buying can add to the move. This is often called a short squeeze.

A worked example

We use the ECB fixings for illustration. Real trades happen at live quotes, which differ from these daily reference rates.

GBP/USD moved from 1.3317 on 29 October to 1.3399 on 30 October.

1. Change: 1.3399 − 1.3317 = 0.0082. That is 82 pips (a pip is 0.0001 on this pair).
2. Take a position of £10,000. Each pip is worth 10,000 × 0.0001 = $1.
3. A long trader gains 82 × $1 = $82.
4. A short trader loses the same 82 × $1 = $82.

Now look back two days. From 1.3288 on 28 October to 1.3399 on 30 October is 0.0111, or 111 pips. On the same £10,000, that is $111 gained by a long and $111 lost by a short. The same price move creates a winner and a loser of equal size.

Why it matters for new traders

Many beginners think only in terms of buying. Shorting is just as common in forex, because a pair can be traded in either direction. Knowing which side you are on tells you exactly which move hurts you.

Short positions carry a specific risk. When a crowded short trade turns against traders, their exits can speed up the move. Reports about positioning, like the UBS note, help explain why a currency sometimes jumps more than the news alone seems to justify.

It also helps to separate one day from the trend. GBP/USD's fixing rose 0.62% in a day but only 0.23% over five fixings. A single strong day can follow several weak ones. You can follow the pair on a GBP/USD chart and compare it with the US Dollar Index.

Key terms

• Long position: buying a pair, profiting if it rises.
• Short position: selling a pair, profiting if it falls.
• Positioning: the overall balance of long and short trades in the market.
• Short squeeze: a fast rise as short sellers buy back to close losing trades.
• Reference rate (fixing): the ECB's official once-a-day rate, not a live quote.