Parametric Equity Plus ETF (PEPS)

PEPS is an exchange-traded fund that holds a diversified portfolio of large-cap US stocks — similar to a broad market index — but wraps it in a tax-loss harvesting system designed to reduce the taxes investors owe on their gains.

The origin: tax-loss harvesting for the masses

Parametric Portfolio Associates, a subsidiary of Eaton Vance, is an investment firm known for tax-efficient portfolio management, a discipline historically available only to the wealthy with dedicated tax advisors. For decades, high-net-worth individuals have used a technique called tax-loss harvesting: when a stock in a portfolio falls in value, they sell it at a loss, using that loss to offset capital gains from other investments, thereby reducing taxable income. Once the loss is captured, they replace the sold stock with a very similar one, so the portfolio’s exposure and performance remain largely unchanged. Rinse and repeat several times a year, and you can whittle away at the tax bill without abandoning your investment strategy.

PEPS brings this manoeuvre to a broader audience. The fund uses Parametric’s proprietary system to identify harvesting opportunities and execute them continuously within a single fund. When holdings fall slightly, the system can swap them for similar stocks, capturing losses on behalf of the fund’s shareholders, then reallocate the proceeds back to the original or similar stocks to maintain the intended exposure. The result is a fund that tracks the US large-cap market very closely in performance but can distribute fewer — or negative — capital gains to shareholders in taxable accounts.

How the harvesting actually works

The mechanics require some care. The fund owns a basket of large-cap US stocks, roughly in line with the market. When any stock falls slightly, Parametric identifies another similar stock (same sector, similar market cap, similar characteristics) and swaps them. The swap crystallises the loss on the sold stock but replicates the economic exposure via the replacement stock. This is not market timing or a bet against the market; it is pure housekeeping designed to capture tax deductions that would otherwise be left on the table.

The system repeats this throughout the year, especially after market volatility. A sharp market dip creates many harvesting opportunities. A recovering market creates opportunities to harvest winners alongside winners. Over time, the cumulative effect is that the fund passes fewer taxable distributions to its shareholders. This works best for investors in higher tax brackets and those with long time horizons, because the harvested losses are preserved for use against capital gains, either within the fund or in the investor’s broader portfolio.

From boutique idea to ETF structure

Parametric pioneered this approach for large separately managed accounts — portfolios run directly for wealthy individuals. The insights proved so valuable that the firm eventually adapted the strategy into a mutual fund and, more recently, into an ETF. The ETF structure is important: because ETFs can exchange shares in kind (trading a block of securities instead of selling them for cash), the tax efficiency is enhanced. Mutual funds, by contrast, must often handle redemptions by selling securities, triggering capital gains. The ETF structure lets PEPS deliver more of its tax benefit to long-term holders.

What PEPS holds and how it differs from a standard index fund

PEPS targets large-cap US equities, overlapping heavily with the Russell 1000 Index, the S&P 500 Index, or any broad large-cap benchmark. In terms of sectors and company types, it looks very much like the market. The difference is not in what it holds, but in the tax layer.

PEPS will not meaningfully beat a standard large-cap index fund on a pre-tax basis. In fact, the trading and rebalancing involved in harvesting might create a small drag relative to a truly passive index. But in after-tax returns — the only number that matters to a taxable investor — PEPS can pull ahead. The benefit grows the more volatile the market is (more losses to harvest) and the longer the investor holds (more years of tax savings compounded).

Costs and suitability

PEPS charges an expense ratio that covers Parametric’s active management of the harvesting system. The ratio is higher than a passive index fund but justified by the tax savings, especially for large portfolios in high tax brackets. Investors should compare the expense ratio against their expected tax benefit. In a very quiet market year with little volatility, harvesting opportunities dry up, and the expense ratio might outweigh the benefit. In a volatile year, the tax savings can easily justify the fee.

PEPS is built for taxable accounts. In a retirement account, where taxes are deferred anyway, the tax-harvesting edge disappears. An individual retirement account or a 401(k) investor is wasting the fund’s core feature and paying extra for it.

Where this strategy shines and where it struggles

Tax-loss harvesting works best after sharp drawdowns, when many holdings are underwater. In the aftermath of a bear market, a harvesting ETF can capture enormous losses and generate tax benefits that shield years of future gains. Conversely, in a sustained bull market where equities never decline, there are few losses to harvest, and the tax benefit is minimal.

This is not a criticism of PEPS but a reality of the strategy. Investors who hold PEPS should understand that the benefit is variable, tied to market volatility and their own tax situation. Those in low tax brackets or those with little capital gains elsewhere might see negligible benefit.

How to research PEPS

Begin with Parametric’s fund fact sheet and prospectus, which explain the harvesting methodology and the fund’s after-tax performance benchmarks. The most important metric is after-tax return versus a standard large-cap index after investor costs. Compare PEPS’s track record against a simple S&P 500 index fund on an after-tax basis, accounting for the expense-ratio difference. That comparison will show whether the tax engineering is earning its keep in your specific situation.

Also consider your own tax circumstances. If you have large unrealised losses in other investments, those losses might be sufficient to shield gains, and PEPS’s benefit would be marginal. If you hold other highly appreciated securities, PEPS becomes more valuable as part of a tax-coordinated portfolio.