VistaShares
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VistaShares delivers innovative Liquid Alternative investment solutions for today's investors. VistaShares ETFs are actively managed by industry and investment experts, offering a number of distinct strategies. Supercycle® Growth Equity ETFs seek exposure to technology-driven economic Supercycles® that the adviser believes may offer long-term growth potential. Target 15® option-income ETFs seek to generate monthly income while complementing a core equity portfolio. Income is not guaranteed and will vary, and the Target 15® name refers to the strategy's objective rather than a guaranteed or promised return. Investing involves risk, including possible loss of principal. There is no guarantee that any investment objective will be achieved, and past performance does not guarantee future results.
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Terms these notes use
| Overlap | the share of a candidate holding that a portfolio already owns somewhere else, measured by looking through to companies rather than by comparing categories. |
|---|---|
| Concentration | how much of the outcome rests on the largest few positions, which is a different question from how many positions there are. |
| Drift | how far a weight has moved from where it was set, which is what a rebalancing rule acts on and what a calendar ignores between dates. |
| Correlation | how two holdings have moved together, with the caveat that it is measured on the past and tends to rise exactly when it would be most useful for it not to. |
| Marginal risk | what one more unit of a position does to the risk of the whole book, which can be negative and is never visible from the position alone. |
The work behind these notes
Notes from here cover concentration, and the specific question of what happens when a small number of holdings carry most of the weight. That is a property of many strategies built on a single idea, it is not automatically a fault, and it is very often not understood by the person holding it until one name has a bad quarter.
The measure worth reading is how much of the return, up and down, came from the top few positions rather than how many positions there are. A hundred-holding fund where five names drive the outcome is a five-holding fund with a long tail attached, and its behaviour in a bad month will say so.
Position count is the most reassuring and least informative number on a factsheet.
It is easy to compute, it is always available, and it answers a question nobody was actually asking, which is roughly the definition of a metric that survives because it is convenient.
The number worth putting beside it is the share of the move, up and down, that came from the largest few names, because that is the one a bad month will be about.