At a more granular level, too, the patterns of trade match the fortunes of economies.
Looking at the numbers, the transatlantic slave trade matches the Holocaust in horror - maybe even without counting subsidiary effects like internal strife and deaths inflected on the continent, death during transport, death during ownership, collapse of African economies, and such.
Mr. Sterling had been chief technology officer of the Island electronic-trade matching system when Instinet bought it last September, and was promoted to president and head of its execution businesses for other brokerage firms two months later.
Schwab was at $23 in early afternoon trading, matching its 52-week low.
It rarely held bonds in inventory, specializing instead in "riskless principal" transactions or "cross trades" — matching buyers and sellers.
More than half of Big Board trades match investors directly, a much higher percentage than on Nasdaq.
Interestingly, Archipelago and REDIbook double-count trades matched.
Now, I do pretty good business trading matched pairs".
February was the fourth consecutive month that Island ECN held the top spot in Nasdaq trades matched and volume among ECNs.
For fee-based full-service customers, trading was free; for anyone else, the cost was $29.95 a trade, roughly matching Schwab's charges.
Because Mr. Rajaratnam and his traders bought and sold hundreds of stocks every day, it was challenging to make out a circumstantial insider trading case, matching up any particular trade with a specific phone call or communication.
