I do not consider the fact that more than 50% is in such few hands a positive. Too much potential to push an initiate which benefits them at the expense of small shareholders,
Than go ahead and short.
I also think that GHDX's only lab facility is built on an earthquake prone fault to be a negative. However, based on my DD the positives outweigh the negatives so I'm long. Good luck with your strategy of making decisions off of one piece of data.