If Mercury is in the 11th house, the native will perform many auspicious ceremonies. He will acquire wealthy through many sources. If Mercury is in the house of a malefic or is associated with malefics, the native will suffer loss of wealth on account of sinful deeds. If Mercury is in his own sign or in his sign of exaltation, the native will become wealthy by performing virtuous deeds.
the person tends to give lots of acquaintances flitting into and out of the life. You probably find it difficult to be friends with a silent person. Your friends are likely to be talkers, or writers, or travelers. For you, writing your hopes and wishes down is an excellent way to keep them from changing from day to day.
Other Views
Brihat Jatak- Mercury in the 11th house will make the person born wealthy.
Phaldeepika- The native will be long-lived, true to his words, possessor of enormous wealth and happy. He will enjoy happiness and comforts from his servants.
Saravali- The native will be wealthy, learned, happy, fond of things of luxury and famous, and will have obedient servants.
Chamatkar Chintamani- There will be no gain of wealth unless Mercury is in the eleventh house.