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Stock (geology)

About: Stock (geology) is a research topic. Over the lifetime, 31009 publications have been published within this topic receiving 783542 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors compare execution costs on the New York Stock Exchange (NYSE) and Nasdaq for institutional investors and find that costs for trading the larger stocks are lower on the Nasdaq market than on the NYSE.
Abstract: We compare execution costs (market impact plus commission) on the New York Stock Exchange (NYSE) and Nasdaq for institutional investors. The differences in cost generally conform to each market's area of specialization. Controlling for firm size, trade size, and the money management firm's identity, costs are lower on Nasdaq for trades in comparatively smaller firms, while costs for trading the larger stocks are lower on NYSE. The cost differences estimated from a regression model are, however, sensitive to the choice of time period. THE MECHANISMS FOR TRADING stocks have undergone dramatic changes in recent years. In the traditional floor-based trading system, as exemplified by the New York Stock Exchange (NYSE), all trades in a stock are centrally processed by a specialist. More recent screen-based systems (such as the Nasdaq system) feature several market-makers for each stock. Proponents of the multiple dealership system on Nasdaq argue that competition among dealers lowers trading costs for investors. There is nonetheless a widespread popular perception that investors' trading costs are in fact higher on the Nasdaq market. This perception is, for instance, provocatively described in a recent article in Forbes, where a trader is quoted as remarking that "in the over-the-counter market, the competition is between the dealers and the customer" (Morgenson (1993)). The available scientific evidence on differences in trading cost between the NYSE and Nasdaq, based on a wide range of methodologies and samples, generally finds that on Nasdaq the bid-ask spreads are wider. Price improvement, the ability to execute at better than the posted quotes, also appears to be more limited on Nasdaq.1

228 citations

Journal ArticleDOI
TL;DR: In this paper, the authors apply time-varying copulas to investigate whether a contagion effect existed between energy and stock markets during the recent financial crisis, using the WTI oil spot price, the S&P500 index, the Shanghai stock market composite index and the Shenzhen stock market component index returns.

228 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the high-frequency cross-correlation existing between pairs of stocks traded in a financial market and investigated the hierarchical organization of the investigated stocks by determining a metric distance between stocks and by investigating the properties of the subdominant ultrametric associated with it.
Abstract: The high-frequency cross-correlation existing between pairs of stocks traded in a financial market are investigated in a set of 100 stocks traded in US equity markets. A hierarchical organization of the investigated stocks is obtained by determining a metric distance between stocks and by investigating the properties of the subdominant ultrametric associated with it. A clear modification of the hierarchical organization of the set of stocks investigated is detected when the time horizon used to determine stock returns is changed. The hierarchical location of stocks of the energy sector is investigated as a function of the time horizon.

228 citations

Journal ArticleDOI
TL;DR: The management of complex fish stocks, at appropriate scales, so as to preserve stock complexity, remains a major challenge as discussed by the authors, and the importance of stock identification will increase as a result of a new emphasis on management which takes into account stock complexity within areas traditionally assumed to contain a single stock.

228 citations

Journal ArticleDOI
TL;DR: In this article, the authors examined the asymmetric impact of gold prices, oil prices and their associated volatilities on stock markets of emerging economies and found that the stock markets in the emerging economies are more vulnerable to bad news and events that result in uncertain economic conditions.

227 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202237
20211,825
20201,882
20191,697
20181,539
20171,706