Their intangible asssets are mainly long term investments and receivables. It seems to me that receivables are down but long term investments are markedly up. if you want to know more, look it up yourself. I am sure that if you go to the company's website, there is a link for investor inquiries.
I have been an investor in the stock market for many years. Often, price movement is quite logical (i.e. a company announces a great increase in earnings and its stock price moves up.) With the very poor economy in Brazil right now, one would expect to see a drop in stock prices. Follow BZF as an indicator for all Brazilian stocks, for example. It is down 15% over the past few months. But, this drop of 40% in the share price of SBS appears to have no meaningful explanation. But, SBS sold for 10% of its present price 10 years ago, so one might expect some sort of correction. If you look at its price move over those 10 years, there was a bad drop at the time the US economy corrected in 2009. But SBS came back in a grand fashion. I personally believe that we will see a similar SBS price move over the next six months.