Chapter 03 – Financial Instruments, Financial Markets, and Financial Institutions
Tools of the Trade: Trading in Financial Markets
With today’s electronic markets you can enter an order and watch as it is executed. If you want
to buy, you enter a bid, and if yours is the highest bid and someone is willing to sell at that price,
you trade immediately. Otherwise, your bid goes into an order book to wait for a seller. If you
sent your order through the New York Stock Exchange, it would have to go through a specialist
who would match the orders. To keep the market liquid so that people can both buy and sell and
so that prices are not overly volatile, specialists often trade on their own account.
In the News: Wait a Second
On August 1, 2012, Knight Capital started to use a new software program to execute its trades.
Within a minute, the program had sent buy and sell orders that cost Knight $440 million. Most
trades are carried out by computer without a glitch and with cost savings. Several drawbacks to
computer trading include software glitches and systemic risks. Suggested improvements include
sully testing automated trading software, voluntary guidelines, and circuit breakers that can halt
trading.
Lessons from the Crisis: Interbank Lending
Interbank lending is a critical foundation of modern financial markets. In normal times, banks
lend to each other in large volumes at low costs for periods ranging from overnight to a few
months. These loans smooth the functions of markets by allowing banks to offset the fandom
ebbs of flows of deposits and loans. If banks did not have access to these loans, they would hold
more cash to insure against unanticipated changes in deposits or loan demand. The financial
crisis of 2007-2009 triggered much greater and more prolonged strains on interbank lending.
The government stepped in, however, to add liquidity and guarantee bank debt and the strains
eventually eased. These crises are not isolated. In 2012, many banks in European countries
became unable to borrow.
Lessons from the Crisis: Shadow Banks
Over the past few decades, financial intermediation and leverage in the United States has shifted
away from traditional banks and toward other financial institutions not subject to government
regulation, including brokerages, consumer and mortgage finance firms, insurers, and
bank-created asset-management firms. These firms are often called shadow banks because they
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Lessons of the Article: Information technology lowers the costs of financial transactions,
making securities more liquid and the financial system more efficient. But securities trading
is now so rapid that further speed gains have diminishing benefits for the economy, while the
introduction of untested technologies can undermine trading and cause intermediaries to fail.
The article highlights the potential conflict between the incentives of firms that seek a
competitive edge through faster trading of stocks and the economy’s need for a robust system
of exchange.