The Pension ROA is Plural…ROAs
Source: The Pension ROA is Plural…ROAs
The pension return on assets (ROA) assumption is a critical calculation since it affects both assets (asset allocation) and liabilities (discount rate). Most plan sponsors and their consultants focus on the ROA as the assets hurdle rate. Asset allocation models use the ROA as the target return. Public and multiemployer pension plans tend to also use the ROA as the liability discount rate.
Asset Allocation
The ROA is usually calculated by first looking at the average historical returns of the index benchmark for each allowable asset class except bonds and cash where the current yield is used. Each asset class is then weighted to come up with the ROA calculation for the total pension fund. The ROA has to be verified by auditors and/or actuaries that such return assumptions used for each asset class are realistic. The range of return assumptions usually stretch from a high of 10% to 12% for Private Equity and Alternatives to a low of 1% for cash and 3% for fixed income.
As a result, each asset class is asked to earn the ROA assigned to them by using their index benchmark as the target return proxy. They are NOT required to earn the pension fund ROA assumption (@ 7% today). This is an important fact to remember in asset allocation. We at Ryan ALM often hear the criticism and question… how can we invest in 3% bonds to earn our ROA (of 7%)? The answer is bonds do NOT need to earn the pension ROA… just their assigned ROA in the asset allocation model.
Better yet, the ROA is usually calculated annually. Interest rates have risen significantly in 2022 allowing current bonds to easily outyield the ROA (even the 1-year Treasury Bill outyields the bond ROA). Since the asset allocation model traditionally uses the Bloomberg Barclay (BB) Aggregate as the fixed income index benchmark (initially the Lehman Aggregate I designed as the head of Fixed Income Research in the late 1970s and early 1980s). This index is heavily skewed to low yielding Government securities (1.77% as of December 31, 2021 and 2.92% on March 31, 2022). If you buy a fixed income portfolio that outyields the BB Aggregate with similar or shorter duration, you are in a good position to earn the ROA assigned to fixed income. Remember… the asset allocation model uses yields not returns for the fixed income ROA. In fact, if you could buy a one-year bond at the yield of the BB Aggregate… you would achieve your annual ROA objective!
But bonds can do better… much better:
Cash Flow Matching – if bonds were used to cash flow match and fund net liabilities (after contributions) chronologically they would produce the liquidity needed to fully fund such net liabilities. Cash flow matching works best with longer coupon bonds where you use semi-annual interest income to partially fund shorter liabilities. A 10-year bond has 20 interest cash flows + one principal cash flow all priced at a 10-year yield. This would eliminate the need to do a cash sweep of other asset classes which is a common liquidity procedure. According to S&P data, the S&P 500 has 48% of its historical returns from dividends and reinvestment since 1940 on a 10-year rolling period basis. Wouldn’t you want to reinvest dividends back into growth assets rather than spend it on funding benefits + expenses? By using bonds as the liquidity assets, the growth assets are left unencumbered to grow. The longer the cash flow matching period, the more time the Alpha assets have to compound their growth. This could significantly enhance the ROA.
Yield on Bonds – As described previously, the ROA forecast for fixed income is based on the current yield of its index benchmark. The Bloomberg Barclay Aggregate is most favored as the bond index benchmark. The Aggregate is a very large, diversified and low yielding portfolio of bonds with the following summary statistics as of December 31, 2021:
| # of issues | 9,982 | Treasury | 39.76% | AAA | 68.92% |
| YTM | 1.77% | Agency | 4.04% | AA | 2.92% |
| Duration | 6.58 yrs. | Mtg. Backed | 29.91% | A | 11.16% |
| Avg. Maturity | 8.78 yrs. | Corporates | 26.29% | BBB | 15.38% |
As a result, most asset allocation models would have a ROA for bonds of about 2.00%. If you can build a bond portfolio that outyields the Aggregate index with similar or shorter duration, by definition, it should enhance the ROA for total assets. Ryan ALM Advisers, LLC has created a cash flow matching product we call the Liability Beta Portfolio™ (LBP). The LBP is a cost optimization model that cash flow matches liability cash flows chronologically at the lowest cost from a corporate bond portfolio skewed to A/BBB bonds.
Based on the actuarial projections of each client we initially build a Custom Liability Index (CLI) to calculate net liabilities ((benefits + expenses) – contributions) chronologically. The CLI provides all the data needed for the LBP to function efficiently. Based on the allocation to the LBP will determine how far out the LBP can fully fund net liabilities. Usually, a 15% allocation to the LBP can fund 1-7 or 1-10 years of net liabilities. Usually, the longer the term structure of the LBP, the higher the yield. The LBP will outyield the Aggregate index by over 50 bps (1-5 years) to over 100 bps (1-10 years) based on the LBP term structure. If the LBP outyields the AGG index by 50 to 100 bps, asset allocation can afford to overweight the bond allocation and still meet the target ROA for total assets. A 15% allocation to an LBP yield of 5.00% is 75 bps value added to the ROA while 15% at BB Aggregate yield of 3.00% is only 45 bps. Said differently, you would need a 25% allocation to a bond total return focus versus the Aggregate yielding 3% today to equal the same ROA value as a 15% allocation at a LBP yield of 5.00%.
3. Higher Interest Rates – bonds are interest rate sensitive as to their market value (present value). Rising US interest rates may or should cause negative returns. However, cash flow matching is focused on funding B + E (Benefits + Expenses) which are future values. Future values are not interest rate sensitive. Bonds are the only asset class with the certainty of cash flows (future values). That is why bonds have always been used as the methodology for defeasance (cash flow matching) of liabilities. Moreover, if interest rates trend upward any reinvestment of cash flow can buy future value at a lower cost. As a result, cash flow matching sees higher interest rates as an opportunity to reduce funding costs.
4.Cash – many pension plans have a cash allocation of around 1% to 3%. Cash is usually the lowest yielding asset. Since the LBP becomes the liquidity assets to fully fund benefits + expenses chronologically, there is little need for cash to fund B+E. Cash might only be needed for capital calls on Private Equity and other Alternative Investments. The LBP should significantly increase the yield margin versus cash since the LBP is using coupon income from all maturities of the LBP and is skewed to A/BBB corporate bonds. With the LBP fully funding B+E, the cash allocation can be reduced to around 1%. Replacing most of the cash allocation to fund B+E with the LBP allocation is another ROA enhancement… it all adds up.