Abstract: A method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. Stock migration is controlled using a systematic stock migration process so that stocks are gradually added and deleted from an index.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. Stock investment style is determined in a multi-dimensional process, instead of a linear process. Furthermore, the number of stocks in the stock index need not be a fixed value, but may depend upon how many stocks meet predefined criteria at any given point in time.

Abstract: A method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: A method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: A system is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. Stock investment style is determined in a multi-dimensional process, instead of a linear process. Furthermore, the number of stocks in the stock index need not be a fixed value, but may depend upon how many stocks meet predefined criteria at any given point in time.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. Stock migration is controlled using a systematic stock migration process so that stocks are gradually added and deleted from an index.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. For a stock index of a particular size, a band is defined around the upper and/or lower limits of the stock index. To be added to, or dropped from, a particular stock index, the stocks must fall outside of the bands for that particular stock index size. Stock migration is controlled using a systematic stock migration process so that stocks are gradually added and deleted from an index. Stock investment style is determined in a multi-dimensional process, instead of a linear process. Furthermore, the number of stocks in the stock index need not be a fixed value, but may depend upon how many stocks meet predefined criteria at any given point in time.

Abstract: An automated method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: An automated method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: An automated method is provided for administering a single investment company that issues one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: A computer program product is provided for administering a single investment company. The computer program product has a computer-readable medium encoded with computer-executable instructions. The instructions perform a method wherein the single investment company issuing one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: A computer program product is provided for administering a single investment company. The computer program product has a computer-readable medium encoded with computer-executable instructions. The instructions perform a method wherein the single investment company issuing one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value and issues one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. One or more computers maintain account data of the outstanding shares. An owner of any share of any share class has an undivided interest in the single investment company.

Abstract: A computer-implemented method of purchasing or selling exchange-traded shares is performed by entering into a computer an order to purchase or sell exchange-traded shares on behalf of an investor on the secondary market through a broker, executing the order on the secondary market via one or computers, and updating account data of the investor in one or more account data computers to reflect the new number of exchange-traded shares held by the investor. The exchange-traded shares are exchange-traded shares that are associated with a single investment company that has issued one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value, and one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. The shares that are bought and sold at negotiated market prices are the exchange-traded shares.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. For a stock index of a particular size, a band is defined around the upper and/or lower limits of the stock index. To be added to, or dropped from, a particular stock index, the stocks must fall outside of the bands for that particular stock index size. Stock migration is controlled using a systematic stock migration process so that stocks are gradually added and deleted from an index. Stock investment style is determined in a multi-dimensional process, instead of a linear process. Furthermore, the number of stocks in the stock index need not be a fixed value, but may depend upon how many stocks meet predefined criteria at any given point in time.

Abstract: Computer-implemented methods of creating and maintaining stock indexes are provided. For a stock index of a particular size, a band is defined around the upper and/or lower limits of the stock index. To be added to, or dropped from, a particular stock index, the stocks must fall outside of the bands for that particular stock index size. Stock migration is controlled using a systematic stock migration process so that stocks are gradually added and deleted from an index. Stock investment style is determined in a multi-dimensional process, instead of a linear process. Furthermore, the number of stocks in the stock index need not be a fixed value, but may depend upon how many stocks meet predefined criteria at any given point in time.

Abstract: A computer-implemented method of purchasing or selling exchange-traded shares is performed by entering into a computer an order to purchase or sell exchange-traded shares on behalf of an investor on the secondary market through a broker, executing the order on the secondary market via one or computers, and updating account data of the investor in one or more account data computers to reflect the new number of exchange-traded shares held by the investor. The exchange-traded shares are exchange-traded shares that are associated with a single investment company that has issued one or more classes of shares that are bought from and redeemed with the single investment company at a net asset value, and one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices. The shares that are bought and sold at negotiated market prices are the exchange-traded shares.

Abstract: An investment company is administered by issuing one or more classes of shares that are bought from and redeemed with the company at a net asset value, issuing one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices, and maintaining, in one or more computers, account data of the outstanding shares. A shareholder may acquire exchange-traded shares by requesting conversion of a designated number or dollar value of shares belonging to the one or more classes of shares that are bought from and redeemed with the company at a net asset value for a monetarily equivalent number of shares of the one or more classes of shares which are exchange-traded shares of the company. An authorized participant may purchase exchange-traded shares directly from the investment company in exchange for a basket of securities of generally equivalent monetary value.

Abstract: An investment company is administered by issuing one or more classes of shares that are bought from and redeemed with the company at a net asset value, issuing one or more classes of shares that are listed for trading on a securities exchange and that are bought and sold at negotiated market prices, and maintaining, in one or more computers, account data ofthe outstanding shares. A shareholder may acquire exchange-traded shares by requesting conversion of a designated number or dollar value of shares belonging to the one or more classes of shares that are bought from and redeemed with the company at a net asset value for a monetarily equivalent number of shares of the one or more classes of shares which are exchange-traded shares of the company. An authorized participant may purchase exchangetraded shares directly from the investment company in exchange for a basket of securities of generally equivalent monetary value. A direct purchase requires a purchase of a predetermined number of exchange-traded shares.