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Negative Returns Are Normal
Investment Theory Kieran Cook Investment Theory Kieran Cook

Negative Returns Are Normal

Recent market history can make it feel like stock markets mostly go up. That is understandable if your investing experience has been shaped by the post-2010 to 2025 period. The problem is that it can distort expectations about what ‘normal’ looks like. Negative returns are a routine part of equity investing, especially over short horizons.

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Inflation Swaps In A Short-Duration Bond Fund
Practical Investing Kieran Cook Practical Investing Kieran Cook

Inflation Swaps In A Short-Duration Bond Fund

If you want UK inflation protection, the obvious route is index-linked gilts. The problem is that the linker market is relatively narrow and often pushes you into longer-duration exposure, so performance can end up being dominated by real-rate duration and price volatility rather than inflation protection. Dimensional’s design choice in the Sterling Short Duration Real Return Fund is to separate those moving parts: keep the bond portfolio short and diversified (including investment-grade credit), then attach inflation sensitivity via an overlay of UK RPI inflation swaps.

That is the key idea: a physical linker bundles inflation linkage with real-rate duration, whereas a swap overlay lets you target inflation exposure without being forced into long duration. The fund is not risk free. Credit spreads can widen, and implementation frictions matter, but the risk mix is different from a linker-heavy approach.

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Equal Weighting: Genuine Diversification or Hidden Factor Risk?
Practical Investing Kieran Cook Practical Investing Kieran Cook

Equal Weighting: Genuine Diversification or Hidden Factor Risk?

Market-cap weighted indices let prices set the portfolio weights, so the fund tracks the overall market closely. Equal weighting strategies give every stock the same weight, which is often pitched as a way to avoid ‘bubbles’. However, most of the difference is not magic outperformance. Indeed, it is a different, riskier set of exposures, especially towards smaller and cheaper companies.

Mechanically, equal weighting strategies underweight the biggest firms and overweight small names which results in frequent rebalancing to keep weights equal. That means higher turnover and trading costs, particularly in less liquid stocks. Equal weighting also tends to sell recent winners and buy recent losers, which can blunt upside participation and leave you more exposed to struggling businesses than a market-cap weighted index would.

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Short Rates Vs Long Rates: Why Central Banks Don’t Set Mortgage Rates
Economics Kieran Cook Economics Kieran Cook

Short Rates Vs Long Rates: Why Central Banks Don’t Set Mortgage Rates

Short rates sit at the front end of the yield curve and mostly reflect what the central bank is doing now and what markets expect over the next year or two. Long rates are set by investors looking out over the next decade, so they reflect longer-run inflation and growth expectations plus extra compensation for uncertainty (the term premium). That’s why the Fed or Bank of England can cut rates whilst long yields barely move: markets may think the cuts won’t last, or they may demand a higher term premium. And because many fixed borrowing costs are priced off longer-term yields plus a spread, mortgages and corporate debt can stay expensive even as policy rates fall.

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