Fix (fixing)
A portfolio values EUR 1 million at a hypothetical benchmark of USD 1.1000 per euro, producing a USD 1.1 million valuation. A separate sale filled at 1.0995 produces USD 1,099,500 before fees: USD 500 below that reference. This does not imply that the benchmark provider promised the reference as an executable fill.
Named benchmark and methodology
Identify administrator, currency pair, benchmark time, price type and methodology version. “The fix” is ambiguous without them. The widely used WMR London closing spot benchmark differs from other fixing times and central-bank reference rates.
Observation and calculation
Inputs, filtering and fallback rules depend on the methodology and available data. Do not assume every fix is a single last trade or a volume-weighted average. Calculation windows and holidays must be read from the applicable published rules.
Valuation versus trading
Benchmark-related hedging can cluster activity, but does not guarantee a direction or profitable event strategy. An order linked to a benchmark has contractual spread, fees and timing rules; valuation at a fix is not proof of market execution at that rate.
Primary source checked 11 October 2026: www.lseg.com.
FAQ
Is fixing the same as fixing a currency peg?
No. Benchmark calculation at a named time differs from maintaining an exchange-rate policy target.
Can I compare a fill with any daily fixing rate?
Use a relevant, predefined benchmark with matched time, quote side and currency. An unrelated fixing can give a misleading execution comparison.
