Custom Core Factor Blends

Client Leverages Custom Core® to Create a Custom Factor Blend

Investor Challenges


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An advisor’s prospective client sought the US small-cap and value exposure of a mutual fund but in a more tax-efficient vehicle.


We created a custom blended benchmark with specific factor tilts similar to the fund’s exposure but with a lower tax cost.


We transitioned the existing assets toward the desired exposure while limiting the realization of capital gains.


An advisor uses an asset allocation for each of his clients that includes a US equity mutual fund with an emphasis on small cap, value, and profitability. A tax-sensitive potential client had a portfolio of appreciated securities. Selling the securities to buy the mutual fund would trigger a huge tax bill for the client. The advisor sought a solution that would provide the client with exposure similar to the mutual fund but in a more tax-efficient manner.

Parametric solution

Parametric reviewed the desired risk exposures and used a combination of our factor strategies and market-cap-weighted indexes to create a custom blended benchmark to match the target exposure. We used our proprietary tool to disaggregate the mutual-fund holdings and ran a risk decomposition to create a blended benchmark with factor exposures similar to those of the mutual fund. The custom blended benchmark provided the small-cap exposure along with a tilt toward size and value to match the fund.

Next, to review the tax impact of the transition, we ran a proprietary analysis to review multiple transition scenarios into a Parametric Custom Core account that balanced tax cost with exposure to the new target. After reviewing the transition scenarios, the advisor could now select one whose tax cost met the client’s needs. Over time our portfolio managers would then work to reduce the portfolio’s tracking error to the target while being mindful of taxes.


The advisor could now provide a customized solution to the client that transitioned the existing assets toward the desired exposure while limiting the realization of gains. Through ongoing management, the portfolio managers will continue to better align the portfolio to the targeted exposure in a tax-efficient way. The advisor can now also use the customized model for future clients.

While we have many factor blends we manage for clients, this specific blend has 145 accounts with $557 million in AUM attached to it.

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