The "supporting values" are formed by the interest rate development itself. Sustained by the low key interest rate of the ECB, the Euribor, and the yield on government bonds.
There have been ups and downs in mortgage rates repeatedly over the past 12 months. Often more pronounced when there were relevant political changes. However, the changes in interest rates have always taken place within a "channel," which so far does not dare to break certain peak values - at least for now. The interest rate touches these values, stays there, and then falls again.
Currently, it has been rising again for about 4 / 5 weeks. It is quite high in some places right now, hitting a few spikes, but all in all nothing worrying.
I assume that - especially since ECB boss D. is currently doing everything possible to bring about a recovery in the battered countries - the interest rate will fall again starting next month. A lame comparison: I inject a substance into my right upper arm for muscle growth, but I cannot expect only this muscle to get stronger. Most likely, muscles will grow throughout the body.
So if Draghi does something to lower the interest rate, of course, this will have an effect not only in the crisis countries but also in others.
The big unknown is and remains politics. But a predictable market would be far too easy.
We will need money next year and I will probably take the dip after the next fall. Reflected on my experience, that should be within the next six months.
But these are all my guesses / experiences. The market always has surprises in store. And in the future, this will also affect the German bond, the developments of the Fed, and the currently very disturbed Chinese economic market. There are elections in September too...
Let's see what will happen.
(I assume no responsibility if someone wants to follow my statements and ends up having bad luck. I do this for myself because I try to pick a good time. I have no guarantee for that. The stock market is a gamble. :))