That's a new one for me. Never heard of a "any part order". I only get the choices of market order, limit order, stop loss or limit, and then all or none, none, fill or kill, etc........ Your "any part order", sounds like a "none" in my choices. It's as if you're saying, "I'll take anything, even 10 shares"........Sounds dangerous to me. I always stick with limit order, and all or none. This way, you either get your order filled, or nothing happens........It sounds like your order choice leaves you open, to a partial fill for the day........I just know, that years back, I wasn't being filled for several weeks in a row, on some small hardly traded Chinese penny stock. So I called my broker about it, since I saw plenty of other similar priced and sized trades going through, day after day. My broker said it was because of my choosing "all or none". So, at his suggestion, I changed it to "none". Well, my trade went through immediately, but only for a "partial fill" of like 30 shares, when I wanted like 10,000 shares. That was all that got "filled" for the day, and it cost me a full transaction "fee", that far far exceeded the shares I bought. Pissed me off. So I'll never do that again. I always stick to limit, all or none. You could try the "fill or kill" option, if you have that. That sort of "forces" the MM to fill it, or it is immediately cancelled otherwise. Just a thought.........Never heard of your "any part order" though. Sure sounds like your asking for a "partial" fill, with that choice........JMO.
