Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Facebook buying WhatsApp for 19 Billion. How are existing shareholders affected?
isn't it still a dilution of existing share holder stock value ? Whether this is dilution or benefit, only time will tell. The Existing value of Facebook is P, the anticipated value after Watsapp is P+Q ... it may go up or go down depending on whether it turns out to be the right decision. Plus if Facebook hadn't bought Watsapp and someone else may have bought and Facebook itself would have got diluted, just like Google Shadowed Microsoft and Facebook shadowed Google ... There are regulations in place to ensure that there is no diversion of funds and shady deals where only the management profits and others are at loss. Edit to littleadv's comments: If a company A is owned by 10 people for $ 10 with total value $100, each has 10% of the share in the said company. Now if a Company B is acquired again 10 ea with total value 100. In percentage terms everyone now owns 5% of the new combined company C. He still owns $10 worth. Just after this acquisition or some time later ...