RE: RE:etc. Shareholders5 Jan 2019 21:17
The next demerger in the FTSE100 is at Prudential where the UK businesses are going to be separately listed. SH will get one share in each for each current Pru share. There should be no change in total value at separation.
There will be some realignment of holdings by investors who prefer one co over the other as they have different characteristics for growth and income......the same will happen with GSK. One part will look like AZN and the other like Unilever. This will cause some divergence in Shareholder returns.
What you decide to hold will depend on your aims and risk appetite but if you hold GSK now, you can hold both and have the diversification benefit.