Which cryptocurrencies are most likely being manipulated..?

Likely all of them, but BTC primarily. That’s the case if it turns Tether is being added to the system fraudulently. (Tether being the USD pegged cryptocurrency under the symbol ‘USDT’.)

In case you’re not aware, there is an anonymous account by the name of ‘Bitfinex’ed’ (on twitter and medium) that has been on the warpath against Tether for months. His account, at first, seems a bit like a conspiracy theory, but eventually you find out a couple of things that give his claims legitimacy:

The organization that runs and issues Tether is also the same organization that runs Bitfinex. This was found out rather recently and confirmed through shareholder documents that linked the two organizations.
The organization that runs Tether and Bitfinex have never had a comprehensive audit to prove that for every USDT there is an equivalent USD locked in a metaphorical vault. The fact that this hasn’t been proven and yet USDT still trades at $1 is astonishing.
We do not know who the ‘investors’ are that are locking their funds to produce USDT. When there was less than $100 million Tether, it’s possible that these investors were under the radar. Now that we’re well over a billion USDT in circulation and it’s still unclear who these investors are is suspect.
These lead to the potential of abuse in the system. But if USDT got found to be fraudulent, I felt that before this week it wouldn’t have a catastrophic impact. Now I believe that USDT is in fact being used to artificially manipulate the price of the BTC and the market.

Last Tuesday (January 16th), the market took a nose dive. BTC and ETH crashed as much as 30% with other cryptocurrencies diving as much as 50%. Around the same time, Tether began issuing at least $50,000,000 worth of Tether every single day.

Here’s the price of BTC in January 2018, including days new Tether were added to the ecosystem.

That Tether was immediately used to buy Bitcoin and other digital assets.

This means one of two things:

Either a group of unknown, unnamed investors issued $750,000,000 worth of USD as Tether (45% of the currency supply) to buy the dip until the price recovered, or
The Tether that was produced was fraudulent to stop the price from dropping.
If it’s scenario 1, an audit would be able to prove the funds can support a 1 to 1 link USD to USDT. However, the implication of scenario 2 is pretty scary: We actually didn’t see a real crash on Tuesday. The real bottom is likely far below where it actually landed if the Tether is fake.

I really hate to say it, but I believe that because of this activity, the price of cryptocurrency is being manipulated across the board. For everyone’s sake, I hope it’s not true, but it’s on Tether to prove this is incorrect.