What negative factors are you talking about?
In order of severity:
1. Hash rate has dropped nearly 30% since the "halvening" a few weeks ago. This means a lot of Bitcoin miners have stopped mining. Bitcoin mining is necessary for the health of the Bitcoin ecosystem. It is responsible for producing new Bitcoins and more importantly, verifying transactions on the blockchain (the database storing all Bitcoin accounts and movements). To give an extreme example, if the number of Bitcoin miners goes to zero, nobody can transact on the Bitcoin blockchain. Bitcoin essentially becomes worthless. Another nasty side effect of fewer miners is that transaction bandwidth is reduced. This means if a lot of people are doing transactions, some people may have to wait hours or even days to make a simple transaction. More suspicious, there is a transaction fee system that allows those willing to pay more money in transaction fees to move to the front of the line and have their transactions processed first. So the richest can exit at the top first. Hmm...
2. More printing of Tether. This one is a bit complicated to get into, but the price of Bitcoin has been artificially inflated thanks to Tether. The people behind Tether claim to have a 1:1 backing of Tethers to USD but refuse to allow their banks to be audited. That is scary. Research has been done to show that Tether inflated the price of Bitcoin a few years back when it reached its all-time high of ~$20k USD. Once it hit that mark, it was relentlessly sold off. Bitcoin has never come close to reaching that all-time high again. Tether is also based out of HONG KONG. A very stable place in the current geopolitical climate right now... Oh, did I mention China does a majority of the Bitcoin mining in the world?
3. Bitcoins were moved from a 10+ year old wallet in the past two weeks. There are very few people with Bitcoin this old and it was understood that these Bitcoins were most likely lost forever or at the very minimum, were only going to be sold when Bitcoin had reached a much more stable and "lucrative" point than the current time.
4. Public sentiment. Starting to reach here, but those involved with the market know when big name investors start spouting off about a particular investment to the public, they are usually looking for an exit after a pump. The sheer amount of mindless shilling and advertising happening on social media and forums is also something I have noticed.
Keep in mind I have used Bitcoin here as most cryptocurrency follows its action closely.