The amount of investable assets available to venture capital funds has basically been a growth story since 2003. Dry powder slipped 7% in 2004 and 10% in 2008, but increased in every other year over this period.

Now, the dry powder number sits at $155 billion, according to alternative investment research firm Preqin, just off its December 2007 peak of $160 billion. The big number, however, masks a wide range of market situations for venture capital funds. Dry powder levels vary by strategy and region. To get a sense of what's going on behind the scenes, check out the five facts below about venture capital dry powder.

Private equity returns are down 27.6% year-over-year for the 12-month period ending July 30, 2009, according to a Preqin report received by BloggingStocks. The London-based research house notes, however, that the global private equity industry's dry powder (i.e., uncommitted assets) continues to exceed $1 trillion, suggesting that there is still plenty of capital waiting for a rainy day.

Returns for the past 12 months reflect all the nastiness we've seen and lived -- bailouts, company collapses, equity and credit market mayhem and unemployment rates dangerously close to double-digits. But, the money is still coming in. Preqin puts the rate by which contributions outpaced distributions at 235% for buyout funds in 2008. This category raised $148 billion while distributing only $63 billion, making last year the most imbalanced for these two measures in history.

Private equity investors are using current financial market constraints on liquidity to negotiate favorable deals, as private equity general partners have watched the values of their portfolios fall profoundly. Efforts to attract additional investment haven't been easy, as potential limited partners are reluctant to make long commitments in an uncertain marketplace. This has given limited partners a stronger position from which to negotiate both fees and terms and conditions.

Limited partners are getting a leg up on the private equity funds in which they invest, signaling a change from the historical trend in which funds could push for aggressive compensation based on the returns they provide. In a poll conducted by Preqin, 43% of investors noted a power shift from fund to limited partner, with only 2% seeing a shift toward the general partner.

Buyout funds managed by private equity giants Apollo Management LP and Blackstone Group LP (NYSE: BX) are among a growing number of limited partnerships that have experienced sharp declines in value, reports the Wall Street Journal, which highlights the economy's impact on such funds, as well as the influence of mark-to-market accounting.

Apollo and Blackstone recently disclosed to investors the values of their last buyout funds at year-end. Apollo Investment Fund VI LP, a $10.1 billion investment vehicle that closed in 2005, was held at 34% below cost. Perhaps the most notable Fund VI deal is Harrah's Entertainment Inc., which has struggled with its debt covenants. Apollo and TPG Capital LP acquired Harrah's in January 2008 for $27.8 billion.