Cash savings are the single greatest use of share issuance cash flows among U.S. firms, which on average save $0.49 per $1 of share issuance; as a comparison, these firms save $0.03 per $1 of debt issuance, and $0.29 per $1 of cash flows from operations. Moreover, the share issuance savings rate has more than doubled over the past thirty-five years, from $0.23 per $1 in 1971, to $0.62 per $1 in 2005. Hence, when firms issue shares today, they tend to save the majority of the proceeds. In this paper I try to explain why firms save such a large portion of their share issuance proceeds as cash; doing so should deepen our understandings of why firms issue shares, and whether the U.S. equity market is an efficient allocator of financial resources.