Trotter
Northern English and Scottish: occupational name for a messenger, from an agent derivative of Middle English trot(en) ‘to walk fast’ (Old French troter, of Germanic origin, akin to 2 below).
German: occupational name for a grape-treader, from a derivative of Middle High German trot(t)e ‘winepress’. The word and the surname are confined largely to Alsace, Lorraine, Switzerland, and Swabia.
Dictionary of American Family Names, Oxford University
(look at the link)

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Note added at 17 mins (2006-05-03 13:58:24 GMT)
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Dictionaty meaning:
1. trotter -- (foot of a pig or sheep especially one used as food)
2. trotting horse, trotter -- (a horse trained to trot; especially a horse trained for harness racing)

From what I can gather, it is based on the speed or pace of the company's progress.

It's sort of like how a person moves.
One could move along very slowly, at a crawl.
One could move along at a walking pace.
One could move along at a trot (just a little faster than walking but not running).
One could move along with great speed (a runner).

This is the best I can explain it. Hope it helps.

A trot is a slow run, here it means running through or gradually going through the company's financial position.