The Eleventh Astrological House - Good Spirit
The Eleventh House: Also known as "the Good Spirit".  Notice that this is in contrast to the 5th house which is called the good fortune. Since this place is above the horizon, it is aligned with spiritual matters. Interestingly enough this place is also said to be the joy of Zeus (Jupiter), and Jupiter is productive of belongings, religion and spiritual matters in general. Valens and other astrologers of the time called this place the acquisition because it is said to be an indicator of how one makes a living. As I had said earlier, this place is called the acquisition from your perspective because from the others perspective (the 7th) this place is the 5th and related to expendature, and investment, but instead of the investment going out, it is an investment back into you. It is natural that if you put something out into the world, that eventually there will be a return and this is that place. It is not simply financial return, but it is the sum total of the world's reaction to your efforts. If it is a performance (Leo), then what is gained in return is applause from the crowds (Aquarius). It is probably for this reason that Paulus also said: "It gives signs for the determination that concerns alliance and patronage".  This is not unexpected from the modern viewpoint since we see it often an indicator of friendships and the type of crowd that we naturally fall into.
There is another interesting observation about Jupiters joy in this house. Since the upper half of the chart is naturally more aligned with the solar sect, and Jupiter is itself sanguinous and airy forcing you to take the existence of the stars beyond the sunny blue sky on faith, it represents that there are just some things that we take on faith with associates, based upon trust. The 11th house is not a place of deep committment and depth understanding where we need to see proof of what other people stand for. If we receive something, it is not a normal reaction to inspect it. We naturally expect to receive what we are due. We don't look gift horses in the mouth, unless this place indicates a suspicious temperment, negating the naturally uplifting effect of this place. If we do this, we need to take a look at our 5th house to see the type of energy we put out into the world, for the seed that we sow there will show themselves here.
There were differing opinions of how the malefics were affected in this place. According to Valens: "But if the malefics should be present with the Good Spirit, they will not have the power to do anything evil".  From the passages in Paulus however, it seems that if the malefics were in sect then they were benign but if not they became more difficult to handle. 
More info on each of the planets that have dealings with this place:
57. Paulus Alexandrinus, Hellenistic astrology Introductory Matters 378 A.D. © 1993 Robert Schmidt, through Project Hindsight, Published by The Golden Hind Press. See pg. 58. Schmidt now calls the "divinity" spirit instead.
59. Vettius Valens. Anthology, Bk II, Part 1. aprox. 160 A.D. © 1994 Robert Schmidt, through Project Hindsight, Published by The Golden Hind Press. See pg. 11.
60. My overall opinion.
61. Paulus Alexandrinus. Introductory Matters 378 A.D. © 1993 Robert Schmidt, through Project Hindsight, Published by The Golden Hind Press. See pg. 59.
66. Robert Hand said this at the 2nd PHASE Conclave in July 1995.
67. Vettius Valens. Anthology, Bk IV. aprox. 160 A.D. © 1994 Robert Schmidt, through Project Hindsight, Published by The Golden Hind Press. Valens says that the genethlialogical pivots with regard to fortune are more potent than the cosmological pivots.
68. Paulus Alexandrinus. Introductory Matters 378 A.D. © 1993 Robert Schmidt, through Project Hindsight, Published by The Golden Hind Press. See pg. 59.