I for one do believe that Cloudtag are one of the partners working with the Polyphonic—Johnson & Johnson MedTech’s digital ecosystem. Does anyone else?
It's all because of the new shares coming to market. They haven't sold any shares just that the % is reduced due to there being more shares now to work out the % owned by them.
Polio - that's the 3rd time that figure has appeared lately. Once an after hours trade frome the previous day then it popped up twice again in the following days one with a minus sign before it.