English to Portuguese Other Business/Commerce (general)

To make this perfectly clear, we could take 80% of our capital, say $8000 out of $10,000, and put this amount into the market by purchasing a conservative preferred stock, outright. A great rise in the general market might bring us an increase in value of a few points, perhaps 4% or 5%. And conversely, a great decline might depress the issue by about the same amount. An example of going to the other extreme might be to purchase $8000 worth of options on a low-priced, extremely speculative stock, in which the probable result within 90 days would be either a profit of several hundred percent, or a total loss of $8000.