Inexplicably is the key word. Let's change it to "For some reason" it was allowed to trade again. Somebody with full intention allowed it. It was no error, it has continued to this date. From April last year to January it traded well below the radar.
Explanation? Everybody feel free to chip in.
For me, it was allowed to trade and has been accumulated for over a year now. A/D line confirms the accumulation.
IMHO
Always, always do you own DD. Only invest funds you can afford to lose and trust nobody but yourself.