Method of creating and maintaining multi-manager exchange traded funds

1. A computer-implemented method comprising:

receiving, by at least one computing device, first data on a first trading day over a computer network, the first data representing a plurality of different portfolio compositions and having been sent to the at least one computing device by a plurality of remote first computing devices;

weighting, by the at least one computing device, each of the plurality of different portfolio compositions to obtain a plurality of weighted portfolio compositions;

combining, by the at least one computing device, the plurality of weighted portfolio compositions to obtain a combined portfolio composition before a relevant stock market opens on a second trading day, the second trading day being consecutive with the first trading day;

transmitting, by the at least one computing device, second data over the computer network to a management computing system when the relevant stock market is closed and before the relevant stock market opens on the second trading day, the second data identifying changes to current constituent assets of an exchange traded fund that produce future constituent assets, units of each of the future constituent assets being tradable on the relevant stock market when the relevant stock market is open, the management computing system making the changes to the current constituent assets on the second trading day when the relevant stock market is open; and

transmitting, by the at least one computing device, third data over the computer network to a plurality of remote second computing devices when the relevant stock market is closed and before the relevant stock market opens on the second trading day, the third data identifying the future constituent assets to operators of the plurality of remote second computing devices, the third data being transmitted when the relevant stock market is closed and before the relevant stock market opens on the second trading day to prevent any of the operators from trading any units of the future constituent assets on the relevant stock market before the relevant stock market is open on the second trading day, each of the operators being able to trade a basket of constituent assets for a creation unit of the exchange traded fund starting on a third trading day, the third trading day being consecutive with the second trading day.

2. The computer-implemented method of claim 1 , wherein the second data is a portfolio composition file (“PCF”).

3. The computer-implemented method of claim 1 , wherein the third data is a portfolio composition file (“PCF”).

4. The computer-implemented method of claim 1 , wherein the combined portfolio composition identifies a plurality of assets, and a number of shares of each of the plurality of assets, and the computer-implemented method further comprises:

identifying, by the at least one computing device, one or more illiquid assets within the plurality of assets before the relevant stock market opens on the second trading day; and

modifying, by the at least one computing device, the combined portfolio composition before the relevant stock market opens on the second trading day by one or more of the following: (1) removing the one or more illiquid assets from the combined portfolio composition, (2) reducing the number of shares of the one or more illiquid assets in the combined portfolio composition, or (3) replacing the one or more illiquid assets in the combined portfolio composition with different assets that are more liquid.

5. The computer-implemented method of claim 1 , wherein the combined portfolio composition identifies a plurality of assets and a value for each asset from which a number of shares of the asset may be determined, and the method further comprises:

removing, by the at least one computing device, identifications of any assets having a value below a threshold number from the combined portfolio composition.

6. The computer-implemented method of claim 1 , further comprising:

crossing, by the at least one computing device, each of the plurality of different portfolio compositions with one another and the current constituent assets before the at least one computing device weights each of the plurality of different portfolio compositions.

7. The computer-implemented method of claim 1 , wherein the at least one computing device weights each of the plurality of different portfolio compositions equally.

8. The computer-implemented method of claim 1 , wherein transmitting the third data over the computer network to the plurality of remote second computing devices comprises:

transmitting the third data over the computer network to at least one distribution computing device for transmission thereby to the plurality of remote second computing devices.

9. The computer-implemented method of claim 1 , wherein the second data comprises a trade list that identifies one or more trades to be performed by the management computing system.

10. The computer-implemented method of claim 1 , wherein each of the plurality of different portfolio compositions comprises a buy-list and a sell-list,

the buy-list identifies a plurality of first assets to buy and a number of shares of each of the plurality of first assets to be bought, and

the sell-list identifies a plurality of second assets to be sold and a number of shares of each of the plurality of second assets to be sold.

11. The computer-implemented method of claim 1 , wherein only the operators are authorized to trade the basket of constituent assets for the creation unit of the exchange traded fund.