Pluristem Therapeutics Inc (PSTI)

[bryanb40]

the limitation of even pennies is on your specific account with Fidelity ( or perhaps all of Fidelity accts do this, but I doubt that is the case ). There are also sometimes limitations based on the size of the order as well.

The open market is a different animal, and pricing is not limited in the way it is in your Fidelity trading account. Your order may have been filled by someone not at Fidelity that has different trading restrictions and that allows for partial pennies in bids.

Fidelity also has dark pools as do all large trading houses. Some of their customers may have different trading setups that allow for partial pennies etc... so your order might have been filled there, and Fidelity would prefer that it is because there are tricks in place that allow middlemen to make a lot of cash on those partial penny differences, and it's less expensive for them to fill.

There is nothing mysterious about this. This is known and easily understood with a bit of reading about how trades actually take place. High speed trading enables making a lot of cash on exploiting the tiny differences in price that result due to miniscule differences in trading speed as well.