Currency Market Ebb and Flow
Results of a NBER study based upon spot
yen/dollar one minute bid-ask quotes and transactions provided by EBS.
Major findings include the following:
- Activity—measured by the number of quote
entries (price changes) and the number of deals—and bid-ask spreads have a distinct
intra-day pattern;
- Activity is high in the beginning hours of the three major currency
markets—Tokyo, London, and New York;
- There is little evidence that the activity
increases toward the end of business hours in the three major markets, even during the
closing hours of New York on Fridays, thus there is little evidence of U-shape
pattern—this is a new observation;
- Activity is quite low during the lunch hours of
Tokyo and London, late afternoon hours of New York;
- An average bid-ask spread is
narrow (wide), when quote and deal frequencies are high (low, respectively), except the
beginning hour of Tokyo (GMT 0), when the bid-ask spread is wide despite high levels of
activity.
This data set has advantage over the frequently-used, indicative quotes of a foreign exchange market tick-by-tick data set, such as FXFX of Reuters, in at least in two important aspects. First, the quotes in the electronic broking are “firm” quotes, in that the banks are committed to trade at those quoted prices. The firm quotes can be hit, without recourse, for transactions by any counter-party in the system, provided that the counterparty has a credit line with the bid/ask posting institution. In contrast, the indicative quotes of FXFX screen are those input by dealers to give market information without any commitment for trade.
Second, transactions data that are available in the electronic broking system is
simply not available in the FXFX screen.
Benefits of electronic trading and volume
distribution
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