People, SQM isn't in the most stable of countries, in case you haven't noticed. The government has a curious hand in SQM. It's frightening to own when any turmoil or gov't whim could destroy this stock. Would be a different story if it were in a much more stable country.
The have a major stake in SQM; the peso is losing value fairly rapidly and inflation is the highest it's been in years. That alone is frightening. Why do you think more stable companies in the biz (POT, MON, AGU, etc.) are all up today? The Street is afraid of this thing.