Investing term
What is Satellite sleeve?
A small portion of your portfolio (usually 5–15%) reserved for active picks, with the rest indexed.
A satellite sleeve is a small portion of your portfolio — often 5–15% — set aside for active picks or themed bets, while the bulk stays in low-cost index funds (the core). It's the container that keeps active investing from taking over your whole plan.
It's a structured way to express conviction or scratch the stock-picking itch without risking your financial future. By capping the sleeve at a small share, you limit how much your active bets can help or hurt: even if the sleeve goes to zero, the diversified core carries you. Equally, a great pick in a 10% sleeve can add some spice without your success hinging on being right. The discipline is keeping the sleeve genuinely small and not letting a winning bet quietly grow it into the core.
A satellite sleeve reserves a small share — often 5–15% — for active picks, with the rest in a low-cost index core. Your bets can add spice, but even a total loss on them can't sink the portfolio.
For example
You keep 90% in index funds and reserve a 10% satellite sleeve for two or three individual stocks — your bets matter, but can't sink the portfolio.
Learn it by doing
That's Satellite sleeve in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 13, Active Investing: Should You Even Bother?).
Try the free lesson →Why it matters to you
The satellite sleeve matters because it lets you be active safely by ring-fencing the risk. Rather than either suppressing the urge to pick stocks or letting it dominate, it caps active bets at a small, survivable share while the low-cost core anchors your results. It also enforces honesty: sizing your active investing at 10% is an admission of realistic odds, and it ensures that even a total loss on your picks is a setback, not a catastrophe.
⚠ Letting the sleeve outgrow its cap
The whole point of a satellite sleeve is that it stays small — but a winning pick grows, and it's tempting to let it ride or add to it. Before long the 'small sleeve' is a large, concentrated share of the portfolio, and its risk dominates the core meant to anchor you. Cap the sleeve's size and trim it back when winners push it past the limit.