Dark pools, public exchanges, wholesalers; given the ongoing buzz about high-frequency trading, I wanted to point your attention to this graphic from Bloomberg Businessweek.

It shows all of the steps your buy order goes through to get filled.

See if you can follow it through to execution.

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(Barry Ritholtz writes about finance, the economy and the business world for Bloomberg View. Follow him on Twitter @Ritholtz.)

To contact the author on this story:
Barry L Ritholtz at britholtz3@bloomberg.net