More than likely, it's an individual or institution who engages in a highly speculative area of investment activity known as option "writing". Such investors are also sometimes called option "grantors". They stand to make money if - and only if - your option rights at expiration are worth less than you paid for them.

In contrast to the more limited risk that's involved in buying options, writing options involves potentially unlimited risks, may require substantial margin deposits, and is inappropriate for most people. Do not consider it without thoroughly discussing the costs and risks with your broker.