A detailed look at the drawbacks of sleeve-level reporting
If you’re considering creating a models-based Unified Managed Account (UMA) program, the single most important question you need to answer is: sleeves or no sleeves? The main case for sleeves is simple: it lets you generate sleeve-level performance reports that can be used to evaluate the performance of individual model managers. The case against sleeves is more subtle, but ultimately devastating: they're expensive, they lead to inferior tax and risk management, and, worst of all, they’re not useful for the purpose of evaluating model vendors.
A sleeve is a virtual sub-account, a portion of a portfolio that can be traded separately. It’s a “virtual” account because it doesn’t have its own custodial registration. That is, as far as the custodian knows, a portfolio with multiple sleeves is just one portfolio. The sleeves are entirely created and maintained in an accounting system.
Sleeves were originally created to make it easier for wealth advisors to subcontract management of a single portfolio to multiple third-party specialist asset managers. The idea is that you would give each of these third-party specialists trading authority over a segment of the portfolio — a sleeve.
The alternative to sleeves was to transfer funds to each of the third-party specialists, which was time consuming and operationally clumsy. Comparatively, just giving the specialists a sleeve to trade was an elegant solution.
However, it was elegant only in contrast to the alternative of wiring funds. Having multiple specialists control portions of the same portfolio was still problematic: it remained difficult, if not impossible, to coordinate the different specialists to optimally manage transitions, taxes and restrictions. You could end up with wash-sale violations, even situations where one specialist would sell a security the same day another would buy it.
To partially address these concerns, wealth advisors moved to a models-based approach, where the third-party specialists didn’t trade sub-accounts, they just sent models. Trading was handled by the wealth management firm, which might “overlay” tax and constraint considerations (hence the term “overlay management”).
Having a third-party specialist directly control a portion of the account still makes sense if the underlying strategy requires a particular expertise in trading, as might be the case with municipal bonds or micro cap strategies. But for everything else, the models-based approach is operationally simpler and makes tax and risk management easier.
Models-based approaches don’t require sleeves. After all, the third-party specialists no longer needed their own trading sandboxes. But sleeves didn’t disappear, at least not entirely. The reason was sleeve-level performance reporting.
Sleeve-level performance is, naturally enough, just the returns of each sleeve. One of the consequences of using sleeves is that you can generate performance reports for each of the third-party specialists. This wasn’t the original purpose of sleeves — it was simply a consequence of having a sub-account. In fact, ironically, much of the early innovation in sleeves was devoted to making it possible to look above the sleeve-level and create consolidated performance reports for the client’s total portfolio.
But wealth advisors and their clients got used to sleeve-level performance reports. So advisors kept the sleeve/sub-account structure, even after adopting models-based approaches that rendered them unnecessary. Not because they were needed to manage the accounts, but solely to provide reports.
The upside of sleeve-level performance reports
Sleeve-level performance reports fit comfortably into a traditional product- and return-oriented approach to client interactions. Sleeve-level reports are intended to be a form of product-level performance reports, similar to separately reporting the returns of each mutual fund in a client’s account. The core purpose is to aid in the evaluation of the specialists, to answer the question: how well are they performing? This type of product-level reporting is common in many programs, and some clients will expect to see it.
The drawbacks of sleeve-level performance reports
If sleeve-level reporting is common — often even expected — why not make sleeves the universal approach? The answer is that there are severe downsides to sleeves. They are expensive; they result in inferior tax and risk management. And, worst of all, they’re not always useful for their primary function: evaluating the third-party specialist managers.
Let’s look at these drawbacks one at a time.
1. Cost and Complexity
Sleeves introduce complexity in multiple ways:
Sleeves require a “shadow” accounting system that keeps records of the holdings of each sleeve, together with a reconciliation process to make sure that holdings in each sleeve, when combined, equal the holdings of the actual portfolio. And sleeves require a process for transferring assets between sleeves.
Sleeves make cash management more complex. Every account will generate its own cash level from distributions. This complicates the task of funding withdrawals, paying fees and preventing overdrafts. Either the cash in every sleeve is systematically siphoned off in separate transfers to a sweep account or every account maintains its own cash balance level.
Related problems arise with any security that is held in more than one sleeve. Each will have to separately obey lot rounding and minimum trade size constraints, which will introduce some additional drift. Optimal tax-lot selection for sales requires some mechanism for swapping tax lots between sleeves so that any given sale can be done with the best tax lot available. And to avoid simultaneously buying and selling the same security across two different sleeves, you’ll need some sort of cross-selling matching process.
2. Inferior Tax Management
Risk and tax are properties of the portfolio as a whole, not any individual sleeve, so there’s no way to handle the tax and risk of the portfolio optimally if each sleeve is managed in isolation. As a result, sleeve-managed portfolios usually have more drift and are less tax efficient than portfolios managed holistically. This is because it makes both security level substitutions and asset-class rebalancing harder. We consider each, in turn:
Because it enables asset-class rebalancing one security at a time, a holistic approach enables you to simultaneously reduce taxes, turnover and expenses (because you can trade fewer securities and preferentially choose to trade those with the least tax impact) and reduce drift (because you can “fix” asset-class imbalances at much lower drift levels).
3. Not Useful for Evaluating Managers
The high costs of sleeves and the harm they cause to the risk and tax management of the underlying portfolios are serious drawbacks. But, arguably, they’re not the main problem with sleeves. The main problem with sleeves is that they are not necessarily useful for evaluating the performance of model vendors. It’s not even clear that, in a models-based environment, sleeve-level performance reports are even meaningful.
If your sleeve-level rebalancing is "pure" — that is, each sleeve is truly rebalanced in isolation from the others — then sleeve-level reporting can be used to judge the performance of the model vendor in the context of the overlay management program. It is not, strictly speaking, suitable for judging the model vendor in isolation. The sleeve-level performance will reflect the combined contributions of the overlay manager and the model vendor, and any poor performance may simply reflect the overlay manager’s poor execution. However, the combination of model vendor and overlay manager is what the client is buying, so combined performance may be the best measure. If, for example, the sleeve underperforms because the overlay manager is too slow in implementing the short-term signals of the model vendor, you can rightly conclude that the model is not a good choice given the overlay manager’s particular abilities.
But there is very good reason not to manage the sleeves in isolation. As we mentioned earlier, risk and tax are properties of the portfolio as a whole, and you simply can’t manage a portfolio optimally if you manage its pieces in isolation. So all sleeve-based systems allow at least some cross-sleeve influence, meaning the holdings and trades in one sleeve affect the trades and holdings in another. For example:
The problem with all this is that it's not clear how a performance report that reflects the combined contributions of multiple parties can or should be used. In particular, it can't really be used to judge either the model vendor or the overlay manager. The contributions of each are obscured by the actions of the other and what’s happening in other sleeves. It’s a bit like reporting on the combined times in a relay race — it doesn’t help you evaluate any one runner.
Sleeve-based accounting vendors recognize this problem and lean towards minimizing cross influence in their rebalancing analytics. It's not that they don't know how to rebalance more holistically, it's just the more they do it, the more degraded the sleeve reports become. However, this minimal cross-contamination comes at a significant price in terms of higher dispersion, higher taxes and excess cash. And minimal cross influence doesn’t mean none, so sleeve-level reports are still unreliable sources of information with which to judge managers. In practice, the only instance we see of pure sleeve-rebalancing is with institutional accounts, where taxes and minimum position sizes aren’t factors, and it’s practical to more or less follow models exactly.
If sleeve-level performance reports can’t be used to judge managers who sell their models, how is a wealth management firm supposed to select (and deselect) model vendors?
The answer is simple: every wealth manager with an open architecture program has a research and due diligence process for selecting managers (it is a legal requirement). Sometimes this process is done in house. Sometimes it’s outsourced to a third-party consultant. Regardless, there is a process to select managers. And the exact same process can and should be used to deselect managers. This is more than a substitute for sleeve-level reporting when it comes to evaluating managers. It’s the only method that makes sense.
With all of the drawbacks of sleeves, why are they still used? If, in particular, sleeve-level performance reports aren’t really useful, what’s the point?
The answer we see is that some clients, especially institutional clients, will ask for, or even require, sleeve-level reports. Logically, the case against sleeve-level reporting is strong: it’s costly, injurious to the interests of investors and usually doesn't provide useful information. However, this damning list can easily be viewed as unpersuasive if the client expects it. So the question becomes not about best practices, but client expectations.
This sets up a conflict between doing what’s right for the client and doing what the client wants. It’s easy enough to say “do the right thing” but that isn’t helpful to the advisor or the client if the client simply walks away.
What’s a firm to do? We’ll take a look in a subsequent post.