I’m wondering how long it typically takes for a newly listed company to find its real market value.
A video I saw suggested it can take around three years for an IPO to stabilize and reach an equilibrium price.
What’s everyone’s experience or view on this?
After the IPO there is a 6 month to 1 year period where the original investors are restricted to sell. Hence I usually wait for 4 quarters where I also get to see the 200 EMA and helps to look at the TTM in Profit & Loss and the company has 4 quarters of results to go through to get clear in fundamentals.
Any price of any company that is listed - is its true value, at that moment of time.
There are buyers and sellers at that price point, some are optimistic about the company and some feel they have to move out.
Stock prices reflect forward perception. Prices inflate during a bull market and deflate during a bear market due to this. Fair price therefore is almost always less or more than the current ticker price depending on the market cycles 
Besides for the market to be fair there needs to be adequate liquidity supplied by adequate diverse participants without any active or passive rigging.