Once the hard fork is announced, the market moves slightly upwards and then declines slightly but the question is what is the real hard fork that will actually happen?
https://www.coindesk.com/what-to-expect-when-ethereums-constantinople-hard-fork-happensI hope this article will help you a lot to understand about this network upgrade and why they took decision to make some changes there. There is no need to panic it will make this network more healthy in future.