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Many advisers rely on ETFs and mutual funds to gain equity exposure, typically by allocating across broad categories, such as domestic and international, large‑cap and small‑cap stocks. While this approach is convenient, it introduces meaningful limitations.
Advances in direct indexing technology now address many of these issues, providing a compelling alternative to portfolios built with wrapped products.
This article examines the structural challenges of pooled vehicles and highlights how rules‑based direct indexing can deliver more precise, transparent and targeted equity exposure.
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Pooled vehicle limitations
There are five primary limitations associated with using pooled vehicles to construct public equity portfolios:
- Lack of clarity on holdings: Portfolios built with ETFs and mutual funds make it difficult to see what is truly owned, as underlying securities are hard to aggregate and analyze, limiting an ‘ adviser’s ability to make fully informed portfolio decisions.
- Hidden manager overlap and concentration risk: Multi‑manager portfolios can contain significant overlap that often goes undetected owing to the difficulty of aggregating holdings. For example, as technology exposure in the S&P 500 has grown, its overlap with the technology-focused Nasdaq 100 has increased from approximately 20% 10 years ago to about 50% today.
- Limited tax‑loss harvesting: ETFs and mutual funds allow losses to be harvested only at the fund level, not at the individual security level. In addition, mutual fund capital‑gain distributions can create unwanted tax drag, reducing overall tax efficiency.
- Portfolio drift over time: Manager decisions and market movements can shift underlying holdings, leading to unintended tilts and exposures. This makes systematic look‑through rebalancing at the total portfolio level difficult.
- Layered and redundant fees: While simple, passive ETFs can be a cost‑effective way to gain broad market exposure, portfolios built with more active strategies can stack fees, reduce transparency and significantly increase overall costs.
Benefits of the direct indexing approach
Direct indexing allows advisers to define and target a specific market portfolio through a transparent, rules‑based framework.
The approach can be implemented in a more passive manner to closely track a chosen benchmark, or it can incorporate factors and other portfolio construction tools to pursue differentiated or potentially enhanced outcomes.
Key benefits include:
- Highly customizable portfolios: Direct indexing enables advisers to tailor holdings, constraints, exclusions and rebalancing rules to client needs, often replacing multiple funds with a single, precisely defined portfolio built to the ‘ adviser’s specifications.
- Paving the way for tax alpha: Because direct indices are held in separate accounts, advisers can harvest losses at the security level rather than selling entire funds. When combined with systematic rebalancing, this can reduce unnecessary turnover and improve tax efficiency, especially in volatile markets where dispersion creates frequent harvesting opportunities. These tax benefits may help offset some of the hidden costs embedded in higher‑turnover ETFs.
- Knowing what you own: Direct ownership of securities makes it easier to see exactly what is held and to monitor overlap, particularly when equities are held in a single account. Even when multiple direct indices are used, overlap is typically limited because each index targets a distinct market segment. Changes in holdings are driven by documented rules rather than manager discretion, improving transparency, accountability and fiduciary oversight.
- Staying on track: Direct indices are built on clear rules and can be regularly updated and rebalanced to remain aligned with a client’s objectives. Rebalancing can occur on a schedule, when allocations drift outside target ranges, or in a tax‑aware manner that prioritizes losses and limits short‑term gains. This structure reduces unintended drift from market movements and avoids the uncoordinated exposure changes common in pooled vehicles.
Transitioning to direct indexing
Advances in technology have simplified the implementation of direct indexing and made it easier to scale. To fully leverage these benefits, advisers must adapt in several key areas:
- More focus on portfolio construction and less on manager selection: Traditionally, advisers outsource some control over the equity allocation to discretionary active managers and/or index providers that set security‑selection rules. With direct indexing, advisers take a more active role in defining the target portfolio, refining construction rules to achieve desired exposures by sector, geography, number of holdings and other key metrics.
- Balancing tracking error and customization: Direct indices typically begin with a benchmark or defined universe of stocks. Tracking error is influenced by both the number of securities held and the level of customization. While backtests can help estimate tracking error relative to a target, they should be interpreted cautiously owing to potential biases. Over time, tax‑loss harvesting and other portfolio actions may increase tracking error, influencing rebalancing decisions.
- Managing turnover and trading costs: Turnover and trading costs are affected not only by tax‑loss harvesting and rebalancing frequency, but also by portfolio construction rules. Overweights to small‑cap or less liquid securities, smaller trade sizes and frequent execution can increase costs. Because backtests typically exclude trading costs, advisers should monitor live portfolio performance relative to the model benchmark to identify potential cost leakage.
- Evolving client communication: Client meetings often focus on manager performance. With direct indexing, discussions shift toward portfolio exposures and performance drivers, including the impact of individual securities. Because direct indices are held in separate accounts, they integrate easily with platform‑based AI tools that can generate customized client letters, detailed analysis and scalable reporting. This enables more personalized and meaningful client conversations.
Conclusion
The pooled vehicle approach remains viable but carries structural limitations, including limited look‑through control, wrapper‑level tax management, overlap risk, exposure drift driven by manager decisions and valuation regimes, and layered fees. Advances in technology have made rules‑based direct indexing easier to implement and well suited to address these challenges.
Direct indexing provides greater control over holdings, enables more precise tax‑loss harvesting, reduces uncertainty around overlap, and supports alignment with portfolio targets through systematic rebalancing. Because direct indices are held in separate accounts, they are easier to integrate with AI‑driven tools that enhance portfolio analysis and client communication.
Importantly, direct indexing is flexible and scalable. A direct index can serve as a model portfolio that can be applied across clients with similar objectives, while remaining easily customizable to reflect individual preferences.
For advisers accustomed to allocating across pooled vehicles, multiple target direct indices can replicate exposure across geographies, market capitalizations and other desired dimensions. Taken together, rules‑based direct indexing offers advisers a modern, transparent and scalable framework for improved portfolio construction and client service.
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