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更多“分散化（diversification)”相关的问题
Which statement about portfolio diversification is correct？______.
A．Proper diversification can reduce or eliminate systematic risk.
B．As more securities are added to a portfolio, total risk typically would be expected to fall at a decreasing rate.
C．The risk-reducing benefits of diversification do not occur meaningfully until at least 30 individual securities are included in the portfolio.
D．Diversification reduces the portfolio's expected return because it reduces a portfolio's total risk.
APT differs from the single-factor CAPM because the APT______.
A．places more emphasis on market risk
B．minimizes the importance of diversification
C．recognizes multiple unsystematic risk factors
D．recognizes multiple systematic risk factors
Portfolio theory as described by Markowitz is most concerned with______.
A．the effect of diversification on portfolio risk
B．the elimination of systematic risk
C．active portfolio management to enhance return
D．the identification of unsystematic risk
In interpreting ratios such as those in Table 21-1，one must be cautions about drawing the conclusion that diversification is rising as rapidly as the numbers that are reported rise. Suppose a Brazilian buys a United States international equity fund， which places its clients' money in Brazil's stock market. What happens to Brazilian and U.S. gross foreign assets and liabilities？ What happens to Brazilian and U.S. international diversification？
A．If X and Y are perfectly negatively correlated, the risk of the portfolio is neither reduced nor increased.
B．If X and Y are perfectly negatively correlated, the risk of the portfolio is perfectly offset.
C．If X and Y are perfectly positively correlated, the risk of the portfolio is neither reduced nor increased.
D．If X and Y are totally independent with each other, the risk of the portfolio is reduced.
The word "diversification" in the passage is closest in meaning to
SPECULATION ON THE ORIGIN OF THESE PACIFIC ISLANDERS BEGAN AS SOON AS OUTSIDERS ENCOUNTERED THEM; IN THE ABSENCE OF SOLID LINGUISTIC, ARCHAEOLOGICAL, AND BIOLOGICAL DATA, MANY FANCIFUL AND MUTUALLY EXCLUSIVE THEORIES WERE DEVISED. PACIFIC ISLANDERS WERE VARIOUSLY THOUGHT TO HAVE COME FROM NORTH AMERICA, SOUTH AMERICA, EGYPT, ISRAEL, AND INDIA, AS WELL AS SOUTHEAST ASIA.
MANY OLDER THEORIES IMPLICITLY DEPRECATED THE NAVIGATIONAL ABILITIES AND OVERALL CULTURAL CREATIVITY OF THE PACIFIC ISLANDERS.FOR EXAMPLE, BRITISH ANTHROPOLOGISTS G. ELLIOT SMITH AND W. J. PERRY ASSUMED THAT ONLY EGYPTIANS WOULD HAVE BEEN SKILLED ENOUGH TO NAVIGATE AND COLONIZE THE PACIFIC.THEY INFERRED THAT THE EGYPTIANS EVEN CROSSED THE PACIFIC TO FOUND THE GREAT CIVILIZATIONS OF THE NEW WORLD(NORTH AND SOUTH AMERICA).IN 1947 NORWEGIAN ADVENTURER THOR HEYERDAHL DRIFTED ON A BALSA-LOG RAFT WESTWARD WITH THE WINDS AND CURRENTS ACROSS THE PACIFIC FROM SOUTH AMERICA TO PROVE HIS THEORY THAT PACIFIC ISLANDERS WERE NATIVE AMERICANS(ALSO CALLED AMERICAN INDIANS). LATER HEYERDAHL SUGGESTED THAT THE PACIFIC WAS PEOPLED BY THREE MIGRATIONS: BY NATIVE AMERICANS FROM THE PACIFIC NORTHWEST OF NORTH AMERICA DRIFTING TO HAWAII, BY PERUVIANS DRIFTING TO EASTER ISLAND, AND BY MELANESIANS. IN 1969 HE CROSSED THE ATLANTIC IN AN EGYPTIAN-STYLE. REED BOAT TO PROVE EGYPTIAN INFLUENCES IN THE AMERICAS. CONTRARY TO THESE THEORISTS, THE OVERWHELMING EVIDENCE OF PHYSICAL ANTHROPOLOGY, LINGUISTICS, AND ARCHAEOLOGY SHOWS THAT THE PACIFIC ISLANDERS CAME FROM SOUTHEAST ASIA AND WERE SKILLED ENOUGH AS NAVIGATORS TO SAIL AGAINST THE PREVAILING WINDS AND CURRENTS. LOOK AT THE FOUR SQUARES[]THAT INDICATE WHERE THE FOLLOWING SENTENCE CAN BE ADDED TO THE PASSAGE. LATER THEORIES CONCENTRATED ON JOURNEYS IN THE OTHER DIRECTION. WHERE WOULD THE SENTENCE BEST FIT？
下列说法正确的是：（）。
A．分散化投资使系统风险减少
B．分散化投资使因素风险减少
C．分散化投资使非系统风险减少
D．分散化投资既降低风险又提高收益
