My Fellow Shareholders (continued)

Active Products: Active investment strategies continue to dominate client portfolios and remain central to our business. In 2011, we earned $4.5 billion of revenues on average AUM of $1.2 trillion3 in actively managed offerings. We continually invest in our portfolio management teams, risk management expertise and the operating systems supporting their investment processes. We encourage information sharing, and respect the integrity of each team's distinct investment opinions. Inevitably, some strategies will be out of favor from time to time, but we expect our managers to achieve their return targets over a market cycle. When we fail, we aren't afraid to take decisive action to address the problem.

Equities and fixed income represent three-quarters of our AUM and two-thirds of our base fees in active investments, with the remainder in alternatives and multi-asset class products. As investors de-risked during the second half of the year, international retail investors deserted equity funds, including those offered by BlackRock, in favor of global and emerging market debt funds for which we did not have competitive offerings. In contrast, we were able to leverage our broader product line-up in the United States to attract new business in equities and bonds throughout the year. Institutional outflows were driven primarily by reallocation out of scientific active equities despite strong performance and an industry trend away from active core bond portfolios to index, fiduciary and other strategies.

Alternatives: As market correlations have increased, traditional diversification methods have failed. Investors have responded by using a barbell approach, marrying efficient beta with alternative investments to diversify their sources of risk and return. To meet clients' needs, we added a renewable power team, a private equity team and a new head of our real estate business in 2011. Our core alternatives also include single-strategy hedge funds, a very successful multi-strategy fund, and funds of funds that can tailor alternative investment solutions to specific client interests. In addition to launching funds for our new teams, we introduced several alternative investment products specifically designed for retail investors. During 2011, we earned $557 million of base fees and $171 million of performance fees on $66 billion of average AUM in core alternatives. We expect alternatives to be a more significant contributor to client portfolios and BlackRock results over time.

Multi-Asset Class Solutions: The growing interest in multi-asset class solutions is driving strong demand for our global allocation funds, target-date portfolios and fiduciary management services. We offer tailored strategies to institutional clients, including a range of investment outsourcing services, custom glide paths for target-date offerings, and robust support for defined contribution platforms. We are also bringing investment approaches we use with institutional investors to the retail marketplace. For example, we recently introduced a multi-asset income fund, which combines a tactical asset allocation strategy that mitigates volatility with a flexible income solution. In 2011, we earned $894 million in base fees on $217 billion of average AUM managed in multi-asset class investments.

Passive Products: BlackRock's industry-leading index investment teams manage institutional accounts and our iShares ETPs to achieve net investment returns that closely track the index chosen by the client. The keys to success in this area include skillful portfolio construction, especially for indices that cannot be replicated at the security level, management of trading costs and other fund expenses, and the ability to offset these costs with securities lending revenue. ETP investors bear the additional cost of commissions or bid/ask spread on their shares, which can easily overwhelm differences in expense ratios. They are therefore very sensitive to the liquidity of their ETP shares. Similarly, taxable investors are sensitive to gains generated in the underlying portfolios, which reduce their after-tax returns. Given the sophisticated work that goes into efficiently delivering the returns our clients expect from these products, their managers need to be anything but "passive."

All types of investors use index funds and ETPs, including the largest, most sophisticated institutions, registered investment advisers and individual investors. These strategies are a key component of target-date funds and model portfolios, and are playing an increasingly important role in asset-liability management. Our institutional index accounts offer highly competitive services and the ability to customize an approach to obtaining desired market exposures. These accounts are often multi-billion dollar mandates that offer clients the benefit of scale pricing. In 2011, we earned $702 million in base fees on average institutional index AUM of $1.4 trillion.

Clients use iShares to equitize their cash and to take core and tactical exposures. As market volatility increased late last year, investors were drawn to the intraday liquidity and transparency of ETPs, and we benefited from having the most comprehensive product range with the deepest liquidity. Our European offerings feature physical (rather than synthetic) collateral, a differentiator that helped us capture a substantial share of flows in 2011. We devote significant resources and talent to supporting and building our iShares business, including dedicated capital markets, product development and distribution professionals, in addition to the index portfolio management teams. In 2011, iShares generated $2.3 billion of revenues on average AUM of $609 billion, nearly three-quarters of which were equity ETPs.

Risk Management & Advisory Services: There has never been greater demand for BlackRock Solutions ("BRS"), which encompasses our Aladdin operating platform, risk management offerings and financial markets advisory services. BRS achieved record revenues of $510 million in 2011. New business was particularly robust outside the United States and included our first two multi-asset Aladdin assignments in Japan. In addition, European governmental entities, including the Central Bank of Ireland and the Bank of Greece, sought the counsel of our financial markets advisory experts as they tackled their sovereign debt crises. We also capitalized on the bond market rally to liquidate portfolios we were asked to oversee during the financial crisis, including Maiden Lane II, which generated sufficient proceeds to fully repay liabilities to the New York Fed and AIG, and provide a net gain for U.S. taxpayers.

© Copyright 2012 BlackRock, Inc. All rights reserved.

This is an interactive electronic version of the BlackRock 2011 Annual Report to Shareholders. The contents of this version are qualified in their entirety by reference to the printed version. A reproduction of the printed version is available in PDF here.

3 All full year 2011 average AUM references in this letter represent a simple average of the monthly period-end AUM.

*IMPORTANT NOTES
Opinions

Opinions expressed throughout this annual report are those of BlackRock, Inc. as of March 2012 and are subject to change.

BGI Transaction

On December 1, 2009, BlackRock acquired from Barclays Bank PLC all of the outstanding equity interests of subsidiaries of Barclays conducting the business of Barclays Global Investors ("BGI") (the "BGI Transaction").

Adjusted and As Adjusted Results

Diluted earnings per share, operating income, operating margin, operating cash flow and net income are presented on an "as adjusted" basis. See pages 28-30 of the PDF for Explanation of Use of Non-GAAP Financial Measures.

Other Revenue

On the Financial Highlights page Other Revenue includes BlackRock Solutions and advisory, Cash management base fees, Investment advisory performance fees, Distribution fees and Other revenue.

Operating Margin Peer Average

Source: SNL, as of December 31, 2011; Market-cap weighted peer average includes: BEN, IVZ, TROW, LM, AMG, FII, EV, WDR, JNS, CLMS, CNS, GBL and PZN.

Performance Data

Past performance is not indicative of future results. The performance information shown is based on preliminarily available data. The performance information for actively managed accounts reflects U.S. open-end and closed-end mutual funds and similar EMEA-based products with respect to peer median comparisons, and actively managed institutional and high net worth separate accounts and funds located globally with respect to benchmark comparisons, as determined using objectively based internal parameters, using the most current verified information available as of December 31, 2011.

Accounts terminated prior to December 31, 2011 are not included. In addition, accounts that have not been verified as of January 30, 2012 have not been included. If such terminated and other accounts had been included, the performance information may have differed substantially from that shown. The performance information does not include funds or accounts that are not measured against a benchmark, any benchmark-based alternatives product, private equity products, CDOs, or liquidation accounts managed by BlackRock's FMA group.

Comparisons are based on gross-of-fee performance for U.S. retail, institutional and high net worth separate accounts and EMEA institutional separate accounts and net-of-fee performance for EMEA based retail products. The performance tracking information for institutional index accounts is based on gross-of-fee performance as of December 31, 2011, and includes all institutional accounts and all iShares funds globally using an index strategy. AUM information is based on AUM for each account or fund in the asset class shown without adjustment for overlapping management of the same account or fund as of December 31, 2011. The information reported may differ slightly from that reported previously due to the increased number of accounts that have been verified since the last performance disclosure. BlackRock does not consider these differences to be material.

The source of performance information and peer medians is BlackRock and is based in part on data from Lipper Inc. for U.S. funds and Morningstar, Inc. for non-U.S. funds. Fund performance reflects the reinvestment of dividends and distributions, but does not reflect sales charges. S&P 500® Index is a widely recognized, unmanaged index of common stock prices of industrial, utility, transportation and financial companies in U.S. markets.

Barclays Capital U.S. Aggregate Index is an unmanaged index considered representative of the U.S. investment-grade, fixed rate bond market.

Net New Business and Net Inflows

Unless stated otherwise, 2011 net new business and net inflows figures are before giving effect to a total of $28.3 billion in BGI merger-related outflows. These outflows reflect manager concentration considerations prior to third quarter 2011 and outflows from scientific active equity performance prior to second quarter 2011. BGI merger-related outflows totaled $121.0 billion in 2010 and $2.9 billion in 2009. Total merger-related outflows since the December 2009 BGI transaction represent less than 9% of acquired assets under management.

Market Share of U.S. Long-Term Mutual Fund Flows

Source: SimFund, as of December 31, 2011; Data is for U.S. long-term open-end mutual funds and excludes ETFs and funds of funds.

BlackRock Data Points

Debt ratings, AUM, ETPs offered, number of countries and employee data as of December 31, 2011. All other data reflect full-year 2011 results unless otherwise noted. BLK Total Return Performance vs. Peers - Source: SNL. Reflects full year 2011 results and assumes reinvestment of all dividends. Market-cap weighted peer average includes: BEN, IVZ, TROW, LM, AMG, FII, EV, WDR, JNS, CL MS, CN S, GBL and PZN.