Dollar firms before Fed on strong US data: reference rate vs live quote

The US dollar climbed to a two-week high on Tuesday, a day before the Federal Reserve's rate decision, according to Investing.com. A run of US data that beat forecasts helped. investingLive reports that October consumer confidence came in at 91.7 against 81.0 expected, September durable goods orders rose 1.8% against 1.7% expected, and new home sales reached 0.676 million annualized against a 0.650 million estimate.

The dollar's strength shows up in the ECB reference rates for 27 October. USD/JPY's fixing rose 0.23% to 157.82 and USD/CHF's rose 0.30% to 0.8286. GBP/USD's fixing slipped 0.15% to 1.3328, and Investing.com says the pound dipped on a firm dollar. For the wider picture, our sister site covers the dollar's two-week high and the Fed and Bank of Canada decisions ahead.

What is a reference rate vs a live quote?

A live quote is the price you see on a trading platform right now. It changes many times a second while the market is open. Each live quote has two sides: a bid (the price a dealer will pay) and an ask (the price a dealer will sell at).

A reference rate is one official number per day. The European Central Bank (ECB) publishes a set of euro reference rates, also called fixings, once each business day. They are a snapshot taken at a single moment, not a tradable price. Rates for pairs like USD/JPY can be worked out from the euro fixings.

That means a fixing cannot show what happened later in the day. Investing.com's report on the dollar's two-week high was published on Tuesday evening, well after the ECB's once-a-day fixing. The next fixing will be the first to reflect any later moves.

Reference rates are useful because everyone sees the same number. Companies, statisticians and accountants use them to convert currencies in a consistent way. Traders use live quotes to actually buy and sell.

A worked example

Take USD/JPY's two most recent ECB fixings:

1. Change in yen: 157.82 minus 157.45 = 0.37 yen.
2. Percentage change: 0.37 divided by 157.45 = 0.00235, or about 0.23%.

Now EUR/USD, which fell as the dollar rose:

1. Change: 1.1150 minus 1.1188 = minus 0.0038.
2. Percentage: minus 0.0038 divided by 1.1188 = about minus 0.34%.

These numbers tell you how far each pair moved from one daily snapshot to the next. They do not tell you the high or low of the day, or where the price stood when the Investing.com story ran. A live chart such as USD/JPY on TradingView shows every tick in between.

Why it matters for new traders

• You cannot trade at a fixing. If you open a position, you get the live ask (to buy) or bid (to sell), which can differ from the reference rate.
• Headlines and fixings can disagree on timing. A news report of a "two-week high" may describe a live price that the latest fixing never saw.
• Fixings are great for comparisons. Because they are taken the same way every day, they make clean day-to-day and week-to-week comparisons. EUR/USD's fixing, for example, is down 0.58% over five fixings.
• Event risk sits between fixings. The Fed decision lands on Wednesday. Any reaction will appear in live quotes first and in a fixing only afterwards.

Key terms

• Live quote: the current tradable price, updated continuously.
• Reference rate (fixing): one official rate per business day, published by a central bank such as the ECB.
• Bid / ask: the prices at which a dealer will buy from you and sell to you.
• Percentage change: the move divided by the starting rate, times 100.
• Event risk: the chance of a sharp move around a scheduled release or decision.