Good reasons for any stocks' up & downs, it happens to all of them Blue Chip to High Spec.
I still hold SIR.A with no complaints and another jr Nickel that has had the same up & downs like SIR.A It is NAN.V the company released its first Nickel assays from 4 holes of 9 drilled.
Here's the link if interested ( you may have to cut & paste)