Ann: Change in substantial holding, page-5

Been thinking about the shorts situation On 13 July only 5k shorted, at 15 Sept 426k. How has this affected SP? Well in fact it has risen strongly over this period when you could expect the opposite. So if I am interpreting this correctly does this mean any shorting activity is about keeping a lid on the SP. I don't really know but makes one suspicious. BTW at 9 July 762k shorts and it was at this time we had MS/MUFG SSH notices filed and the dramatic reduction in active shorts. Hope you all can follow my reasoning.