Mergers and Acquisitions - How to handle in Sharesight (July 18th - August 1st)

In what will be a fortnightly recurring new thread, I’ll be updating any mergers/corporate actions that the Sharesight team has received queries about in the past two weeks. If you have a merger or corporate action that isn’t addressed, drop the ticker codes in this thread and I’ll update with the steps for how to handle this in Sharesight :+1:

The GSK:LSE /Haleon (HLN:LSE) demerger and consolidation:

  1. The first step would be figuring out how the book cost gets apportioned between GSK and HLN. According to the notice it is to be determined based on the opening prices on the date of the merger and this announcement outlines the ratio to be approximately 81.84% GSK : 18.16% HLN.
  2. Go to the holding page of GSK and click ‘enter a new trade or adjustment’.
  3. Record date 18 July 2022, Trade type: adjust the cost base and enter the demerger ratio as below in the demerger calculator:

  1. Sharesight will automatically calculate the cost base reduction as circled above based on your cost base. Note down this amount.

  2. Add HLN as a buy trade in your portfolio for 18 July 2022. You should receive 1 HLN share for each GSK share held on 18 July 2022. Buy price should be [reduced cost base noted in step 4/ number of HLN shares allocated].

The consolidation of GSK shares should take place on 19 July and I couldn’t find the ratio on this in any announcement. Usually, the consolidations are automated in Sharesight, but we are yet to receive any information on this consolidation from our data provider.

How do I treat the Amcom (AMM) acquisition by Vocus (VOC) on 8th July 2015 resulting in a consolidation of shares. Thanks.