The Economist整理版(《经济学人》原版英文，有4000词汇即可，练习阅读绝好资料)

Digest Of The. Economist. 2006(2-3)

Moving markets

Shifts in trading patterns are making technology ever more important

AN INVESTOR presses a button, sending 1,000 small “buy” orders to a stock exchange. The exchange's computer system instantly kicks in, but a split second later, 99% of the orders are cancelled. Having found the best price, the investor makes his trade discreetly, leaving no visible trace on the market—all in less time than it takes to blink. His stealth strategy remains intact.

Events like this happen many times a day, as floods of orders from active hedge funds and “algorithmic” traders—who use automated programs to buy and sell—rush through the information-technology systems of the world's exchanges. The average transaction size on leading stock exchanges has fallen from about 2,000 shares in the mid-1990s to fewer than 400 today, although total trading volume has soared. But exchanges' systems have to cope with more than just a growing onslaught of “buy” and “sell” messages. Customers want to trade in more complicated ways, combining different types of assets on different exchanges at once. Then, as always, there is regulation. All this is pushing technology further to the fore.

Recent embarrassments at the Tokyo Stock Exchange have illustrated what can happen when systems fail to keep up with the times. In just the past few months, the importance of technology has been plain in mergers (those of the New York Stock Exchange and Archipelago, and NASDAQ and INET); collaborations (the decision by the New York Board of Trade to use the Chicago Board of Trade's trading platform); and the creation of off-exchange trading networks (including one unveiled recently by Citigroup).

Technology is hardly a new element in financial markets: the advent of electronic trading in the 1980s (first in Europe, later in America) helped to globalise financial markets and drove up trading volumes. But having slowed after the dotcom bubble it is now demanding ever more of exchanges' and intermediaries' attention. Investors can now deal more easily with exchanges or each other, bypassing traditional routes. As customers' demands and bargaining power have increased, so the exchanges have had to ramp up their own systems. “Technology created the monster that has to be ad dressed by more technology,” says Leslie Sutphen of Calyon Financial, a big futures broker.

Aite Group, a research firm, reckons that in America alone the securities and investment industry spent $26.4 billion last year on IT (see chart), and may spend $30 billion in 2008. Sell-side firms spend most: J.P. Morgan Chase and Morgan Stanley each splashed out more than $2 billion in 2004, while asset-management firms such as State Street Global Advisors, Barclays Global Investors and Fidelity Investments spent between $250m and $350m apiece. With brokerage fees for trades whittled down, many have concluded that better technology is one way to cut trading costs and keep customers.

Testing all engines

Global growth is looking less lopsided than for many years

LARR Y SUMMERS, a Treasury secretary under Bill Clinton, once said that “the world economy is flying on one engine” to describe its excessive reliance on American demand. Now growth seems to be becoming more even at last: Europe and Japan are revving up, as are most emerging economies. As a result, if (or when) the American engine stalls, the global aeroplane will not necessarily crash.

For the time being, America's monetary policymakers think that their economy is still running pretty well. This week, as Alan Greenspan handed over the chairmanship of the Federal Reserve to Ben Bernanke, the Fed marked the end of Mr Greenspan's

18-year reign by raising interest rates for the 14th consecutive meeting, to 4.5%. The central bankers also gave Mr Bernanke more flexibi lity by softening their policy statement: they said that further tightening “may be needed”rather than “is likely to be needed”, as before.

Most analysts expect the Fed to raise rates once or twice more, although the economy slowed sharply in late 2005. Real GDP growth fell to an annual rate of only 1.1% in the fourth quarter, the lowest for three years. Economists were quick to ascribe this disappointing number to special factors, such as Hurricane Katrina and a steep fall in car sales—the consequence of generous incentives that had encouraged buyers to bring purchases forward to the third quarter. The consensus has it that growth will bounce back to an annual rate of over 4% in the first quarter and stay strong thereafter.

This sounds too optimistic. A rebound is indeed likely in this quarter, but the rest of the year could prove disappointing, as a weakening housing market starts to weigh on consumer spending. In December sales of existing homes fell markedly and the stock of unsold homes surged. Economists at Goldman Sachs calculate that, after adjusting for seasonal patterns, the median home price has fallen by almost 4% since October. Experience from Britain and Australia shows that even a soft landing for house prices can