ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,994, issued on Oct. 14, was assigned to TSX INC. (Toronto).

"Midpoint computations at intervals with balanced groups" was invented by David Edward Hill (Toronto) and Emma Victoria Moogk (Toronto).

According to the abstract* released by the U.S. Patent & Trademark Office: "A set of instruments is divided into groups of instruments. Order data is received for the set of instruments. When an update interval elapses, a group is selected for update of a midpoint price. For each instrument in the group, a current midpoint price is computed based on order data received for the instrument. If the current midpoint price differs from a previous midpoint price, the current midpoint price is...