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S&P 500® Bond Index: Simplifying the U.S. Corporate Bond Market Explore the newly launched bond counterpart of the iconic S&P 500®
BY Hong Xie

INTRODUCTION


Since it was first established as an index in 1957, the S&P 500 has been widely adopted by the financial community as the barometer of the largecap U.S. equity market. As of Dec. 31, 2014, over USD 7.8 trillion is estimated to be benchmarked against the index, with indexed (passively managed) assets making up approximately USD 2.2 trillion. Just as the equity shares of the companies in the S&P 500 represent the performance of domestic large-cap equities, bonds issued by the same companies may be used to gauge the performance of the U.S. corporate bond market.



An index comprising bonds issued by S&P 500 companies could be used to provide a comparison between the equity and bond markets, given that a significant portion of the constituents of the S&P 500 Bond Index are also members of the S&P 500. Furthermore, the fact that the constituents are issued by the household names of the S&P 500, which are already familiar to the investing community, allows for a higher degree of transparency and measurability in the opaque bond market, features that should be evaluated as part of the characteristics a good benchmark should possess.



Against that conceptual backdrop, we introduce the recently launched S&P 500 Bond Index, a corporate bond counterpart of the S&P 500. In this paper, we demonstrate that the S&P 500 Bond Index exhibits characteristics and systematic risk factor exposures that are similar to those of existing broad-based, investment-grade corporate bond indices, and that the index can be effectively used to measure the performance of the sector. Furthermore, our analysis shows that the S&P 500 Bond Index has consistently delivered a higher risk/reward ratio than its peer indices, regardless of the measurement horizon.



S&P 500 Bond Index Methodology Key Points


The S&P 500 Bond Index is a market-value-weighted index that seeks to measure the performance of USD-denominated corporate debt issued by companies in the S&P 500 (and their subsidiaries). In addition, subindices are available by sector and investment-grade or high-yield segmentation. The S&P 500 Bond Index was launched on July 8, 2015 and is rebalanced on a monthly basis. Index history is available starting from Dec. 30, 1994.

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