I don't know the much but I think SMT has pushed the prices up.
Crypto currencies are highly unpredictable/ volatile.
These are mainly based on the speculations and trend change very sharp.
Same has happened again, some news/ speculations have spread and all the investors got panic and started selling their holdings.
A crypto market is not regulated by some regularity authority so there is no one to safeguard the interest of small investors.
As some large selling and buying is observed or some news is broke, crypto market reacts very fast.
In situation like this one should remain calm and should not take decision in haste.
Decentralized technology is still new to the world. Its market penetration and adoption is still negligible.
With the passage of time as more and more people are aware of this technology, it is becoming more and more popular.
Now even many countries has started accepting this as currency and many other are in the process of adopting.
So in future a more countries will jump into it and it will gain more trust of people. Its value will also increase.