In finance, a spot contract, spot transaction, or simply spot, is a contract of buying or selling a commodity, security or currency for immediate settlement (payment and delivery) on the spot date, which is normally two business days after the trade date. The settlement price (or rate) is called spot price (or spot rate). A spot contract is in contrast with a forward contract or futures contract where contract terms are agreed now but delivery and payment will occur at a future date.
In contrast, a perishable or soft commodity does not allow this arbitrage – the cost of storage is effectively higher than the expected future price of the commodity. As a result, spot prices will reflect current supply and demand, not future price movements. Spot prices can therefore be quite volatile and move independently from forward prices. According to the unbiased forward hypothesis, the difference between these prices will equal the expected price change of the commodity over the period.
The spot date may be different for different types of financial transactions. In the foreign exchange market, spot is normally two banking days forward for the currency pair traded. A transaction which has settlement after the spot date is called a forward or a forward contract.
Other settlement dates are also possible. Standard settlement dates are calculated from the spot date. For example, a one-month foreign exchange forward settles one month after the spot date. I.e., if today is 1 February, the spot date is 3 February and the one-month date is 3 March (assuming these dates are all business days). For a trade with two dates, such as a foreign exchange swap, the first date is usually taken as the spot date.
A spot rate curve displays these rates over various maturities. Each security class will have its own curve (with the resultant credit spread – e.g. swaps vs government bonds – a function of increased credit risk). A zero rate curve or zero curve is the term structure of the yields-to-maturity of and maturities. Spot, Zero, Forward Curves, finpricing.com
Note that a spot rate curve is not a curve of bond ytm or David Harper (2015). spot-rates, bionicturtle.com – which in fact are curves of currently trading prices of securities with various maturities (these would be: yield curve, swap curve, cash curve or coupon curve). Spot rates cannot be directly observed, prices can: spot rates are thus estimated from these prices via the bootstrapping method, and the result is the spot rate curve for the securities in question.
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