I see those small trades, and I don't think it's necessarily anyone manipulating, or targeting HMGP specifically. I see just an MM being an MM and adding to their lunch money fund with such things.
Zecco.com lets you make 10 stock trades each month for free (with $2500 in assets or cash). Because of some web site snafu's in September, they are offering existing customers unlimited free trades in October. I have used them to buy my last two lots of HMGP stock for zero commissions. Maybe these very small lot sizes are coming through Zecco???
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