I agree... most of the time it part of a larger order...(I am the proud owner of 2 shares of a low price stock not to be named.. I have owned for many years) ... that was a bad trade order on a low volume stock.... that mistake I have not made since!!!... Several have said the MM's use these as a signal.... it is part of a larger order but the MM will trade small or odd amounts... IE 100 shares.....

When placing stock orders... be aware of the current stock volume...use AON ...do not be afraid to break up orders in smaller amounts(it is worth a little more commish) use trade trigeers... ALLIMHO