Another obstacle is the self-interest of exchange members, who have made a comfortable living from the old ways, and will defend them.
Another was to use foreign currency: the bank could lend, or accept a bill of exchange, in one currency and collect its debt in another, building a hidden rate of interest into the exchange rate.
Surges of dirty money can artificially inflate or deflate asset prices, making interest rates and exchange rates more volatile.
To deal with such volatility, emerging markets need to manage demand in the way that rich nations do: through more flexible interest rates and exchange rates.
If interest rates, exchange rates and fiscal transfers cannot be called on to deal with economic shocks, then wages and prices will have to do the job.
Tokyo has started a new carry trade, in which global investors borrow yen at ultra-low interest rates, exchange it into other currencies and invest for a higher return.
In anticipation of the new regulations, DB set up a new derivative exchange-clearing unit called Markets Clearing for listed and over-the-counter derivatives for interest rates, foreign exchange, credit, commodities and equities contracts.
As NYSE has been expanding abroad with the first trans-Atlantic exchange deal, Nasdaq recently failed in its bid to acquire controlling interest in the London Stock Exchange.
In April New York Stock Exchange short interest reached a record high 6.8 billion shares, up 3% from March.
But full liberalisation of interest rates and the exchange rate must still be some way off given the fragility of the banking system.
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After intense negotiating, the Lincoln provision was watered down to allow interest rate and foreign exchange swaps dealing to remain inside a commercial bank.
An established rule holds that a country cannot successfully fix both its interest rate and its exchange rate especially as its economy becomes more open.
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Careful debt-management strategies that avoid short-term borrowing or the bunching of maturities and hedge against interest-rate or exchange-rate swings should come high on the agenda.
Their most publicised activities, such as using derivatives to speculate heavily on interest-rate or exchange-rate movements, are hardly the kind of activity that will endear them to politicians.
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Banks will still be able to trade swaps to hedge risk and trade interest rate or foreign exchange swaps, but dealing in riskier swaps transactions must still be moved into affiliates.
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Typically convertible preferred is attractive from a corporate standpoint because it tends to carry very low interest rates (in exchange for having equity-like upside from the option to convert into common stock).
The level of the index reflects the looseness of financial conditions: an increase in interest rates or the exchange rate leads to a tightening, a rise in share prices to a loosening.
Paradoxically, although euro membership has made it more urgent for Italy to deal with its structural faults, it may also have made it easier to avoid doing so, by cutting interest rates and eliminating exchange-rate crises.
That would reduce the inflationary pressure at home, resulting in lower interest rates and a cheaper exchange rate.
Short interest at New York Stock Exchange member firms plunged 10.5% in December to the second-lowest level in the past two years.
The nine-member committee, which sets interest rates, sees the exchange rate falling over the next two years, but warns of uncertainty surrounding this prediction.
Just as they fear the destruction of their belongings by fire or theft, businesses may also be concerned that exchange- or interest-rate movements may turn a good idea into a lossmaker.
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In exchange, the consumer interest deduction and an array of special breaks were tossed out.
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For example, high interest rates and hence a stronger exchange rate squeeze manufacturers more than other producers.
But as those rigid exchange rates require high interest rates, they impose a heavy penalty on growth.
Until last week, for instance, Brazil's economy suffered from punishingly high interest rates needed to protect its exchange-rate peg.
On the fund front, there was heavy interest in internationally oriented funds and exchange-traded funds, including the iShares Japan Index.
In April short interest on the New York Stock Exchange reached a record high 6.8 billion shares, up 3% from March.
If the authority appears to be targeting not just the exchange rate, but interest rates too, then the government's commitment to the peg comes into doubt.
Short interest on the New York Stock Exchange alone rose to a record in May, with 11.76 billion shares sold short, up from 10.99 billion in April.
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