FINANCIAL DATA
Investment Summary
As of December 31, 2013, MacArthur's assets totaled $6.3 billion. The Foundation's investment portfolio had a return of 10.77 percent in 2013 net of investment management costs.
The Foundation invests for the long term with the objective of earning a real rate of return, net of expenses, sufficient to fund its charitable giving and operations. The underlying principles of MacArthur's investment approach may be summarized as follows:
- The Foundation maintains a broadly diversified portfolio with allocation to a variety of asset classes, both public and private.
- The broad diversification, combined with rigorous analytical research, is intended to enable the Foundation to manage risk.
- The Foundation seeks to achieve strong net returns over time at a cost comparable to other institutions with similar asset allocations.
Total Assets and Rate of Return, 2005—2013
| Year | Assets | Rate of Return | 
| 2004 | $5,034,822,738 | 17.01% | 
| 2005 | $5,492,269,240 | 15.47% | 
| 2006 | $6,178,196,933 | 18.04% | 
| 2007 | $7,052,165,312 | 19.37% | 
| 2008 | $5,014,059,259 | -26.97% | 
| 2009 | $5,237,796,061 | 12.26% | 
| 2010 | $5,737,270,334 | 16.95% | 
| 2011 | $5,703,076,554 | 4.55% | 
| 2012 | $5,987,438,524 | 10.20% | 
| 2013 | $6,323,307,217 | 10.77% | 
Average rate of return, 2004–2013, 8.82%