Building the Roster: A Framework for Portfolio Construction | Beyond the Funds Spotlight

Executive Summary

Every investor operates under the same constraint as an NBA general manager: a finite cap. Every dollar allocated to one manager, one asset class, one theme is a dollar not available for another. The question is not simply "who are the best managers?" but "how do we spend our cap to build a roster that can compete in any environment?" Professional allocators think in positions, roles, and complementarity — across the whole portfolio, and again within the alternatives sleeve. The reframe: championships are won by rosters, not lineups.

The Intuitive Frame ‍

The most natural question clients and RMs ask is, "who are the best managers?" It's a fair starting point, and manager quality matters enormously. But it sits one layer above the more consequential question, which is: "What role does each manager play, and does this roster have an answer for whatever the market throws at it?" ‍

That question is harder to market. It is easier to tell a client “We added a top-decile performer" than "we added a fund we expect to underperform in a benign year, because it's the one thing in the book that works when credit spreads widen." But the second conversation is often where the real portfolio-construction work happens.

The Cap Is Finite ‍

This is the quietest, most important constraint in the exercise. An NBA team has roughly $155m of cap space in 2025-26. A champion signs a max player, and now a third of the cap is gone. Every dollar after that is a trade-off. You build a roster by deciding, with discipline, what each dollar needs to do. ‍

An investor's portfolio works the same way. The capital base is finite. Every allocation competes with every other allocation, not just for return but for a position on the roster. If a private credit manager is sized at 8% of the book, that is 8% not in a market-neutral strategy, not in a trend-follower, not in cash. The question is never "is this a good fund?" in isolation — it is "is this the best use of this slot, given everything else on the roster?" ‍

This is why sizing is as important as selection. A great manager sized as a max contract when the role only justifies the mid-level exception is a portfolio construction error, even if the manager outperforms.

How Roster Construction Works in Practice ‍

Roster thinking operates at two levels, and it's worth separating them. ‍

The overall portfolio is where the starting five is decided — the core exposures that carry most of the minutes and most of the return expectation. The alternatives sleeve is where specialists and role players fill specific gaps the starters cannot cover alone.

The Allocator's Lens ‍

Great NBA rosters are built on stars surrounded by role players who each do one complimentary things exceptionally well. The 3-and-D wing who defends the best perimeter scorer and hits open corner threes. The microwave scorer who comes off the bench and gets you fifteen points in eight minutes when the offence stalls. The rim-running big who doesn't need plays called for him. The veteran guard who organizes the offence and doesn't turn the ball over in the fourth quarter. ‍

Portfolios work the same way. The core allocations – the compounding engines – do the heavy lifting. Around them sit the satellite positions: a trend-following sleeve that earns its minutes in dislocations, an arbitrage position that does one specific thing in the capital structure, a macro allocation that exists for convexity. Each is sized for its role. Not all of them need to be the highest-returning position in the book to justify a seat. They need to do their job when called on. ‍

None of this works without rigorous due diligence on the players themselves. You cannot assign a role to a fund you don't fully understand. The depth of work on team, process, track record, and behaviour in stress is what converts a fund from "an allocation" into "a role player we can rely on to do a specific job." Roster thinking sits on top of good selection; it doesn't replace it. ‍

This is also where complementarity matters. Two excellent scorers who both need the ball are a worse pairing than one excellent scorer and one off-ball shooter, even if the off-ball shooter is the less talented player. The same is true of managers: two funds with the same return driver are a worse pairing than two funds with different drivers. The roster is the unit of analysis, not the player. ‍

Lighthouse Canton Perspective ‍

The reason this framing matters, ultimately, is that no one knows who they're playing tomorrow. You don't definitively know which regime the next twelve months will reward, which correlations will break, which factor will lead. A good roster is one that has a credible answer for most matchups, and limits its exposure on the ones where it doesn't. ‍

When we build portfolios, we are spending a finite cap. Every slot must earn its minutes, and every signing starts with deep work on the player before we can think clearly about the role. The test isn't whether any single manager is excellent in isolation. It's whether the roster, taken as a whole, is built to compete on the nights when the matchup isn't the one we expected. ‍

Championships are won by rosters, not lineups. ‍

Disclaimer

The contents of this document are confidential and are meant for the intended recipient only. If you are not the intended recipient, please delete all copies of this document and notify the sender immediately.

This document, provided as a general commentary, is for informational purposes only and is not to be construed as an offer to sell or solicit an offer to buy any financial instruments in any jurisdiction. This does not constitute any form of regulated financial advice, and your independent financial advisor should be consulted prior to taking any investment decision(s). This document is based on information from sources which are reliable but has not been independently verified by Lighthouse Canton Pte. Ltd. and its affiliates ("LC"). LC has taken reasonable steps to verify the contents of this document and accepts no liability for any loss arising from the use of any information contained herein. Please also note that past performances are not indicative of future performance. Information contained herein are those of the author(s) and does not represent the views held by other parties. LC is also under no obligation to update you on any changes made to this document.

This document is prepared by Lighthouse Canton Pte. Ltd. and its affiliate, Lighthouse Canton Capital (DIFC) Pte. Ltd., which are regulated by Monetary Authority of Singapore ("MAS") and Dubai Financial Services Authority ("DFSA") respectively. MAS and DFSA have no responsibility for reviewing, verifying and approving the contents of this document and/or other associated documents. The contents of this document may not be reproduced or referenced, either in part or in full, without prior written permission from LC.

This document is only intended for Accredited Investors and/or Professional Clients, as defined by MAS and DFSA respectively.