Noch heute Checkliste wöchentlich em Frankfurt 📊

Position sizing is the quiet discipline that separates surviving investors from those who get to write the post-mortem. In Frankfurt, where the conversation often starts with the macro and ends with the trade, I find myself returning to the same question: how much can we lose before the thesis stops mattering? Why position size beats prediction We spend enormous energy trying to forecast the next move in rates, the next central bank pivot, the next geopolitical shock. But the market rarely rewards the best forecaster; it rewards the person who is still solvent when the forecast plays out. Position sizing is the mechanism that keeps you in the game. It is the difference between a drawdown you can survive and a drawdown that forces you to sell at the worst possible moment. In alternative investments, this is even more acute. Private markets, hedge strategies, and structured credit all carry liquidity profiles that do not match the daily mark-to-market of a public equity book. If you size a position without respecting the redemption terms, the lock-up period, or the secondary market depth, you are not making an investment—you are making a promise you may not keep. Liquidity as a first-order constraint When I look at a new allocation, I ask three questions before I ever look at the return projection: If the market drops 20% tomorrow, can I hold this position for the next 18 months without being forced to sell? What is the true liquidity of the underlying asset—not the fund's stated liquidity, but the actual bid-ask in a stressed tape? Does the position size allow me to add to it if the thesis becomes more compelling, or am I already at the limit of what the book can absorb? These are not hypotheticals. In the last two years, we have seen multiple episodes where the 'liquid' strategy became the illiquid one precisely when investors needed it most. The lesson is not to avoid those strategies; it is to size them so that the liquidity mismatch does not become a solvency event. Volatility is not risk—but it is the price of risk There is a difference between volatility and permanent loss. Volatility is the fee you pay for the possibility of return. Permanent loss is what happens when you are forced to realize a loss because you were overextended. The rational investor does not try to eliminate volatility; they try to make sure that no single drawdown can take them out of the game. In the current macro context, with central banks navigating between inflation and growth, and with geopolitical fragmentation creating supply-side surprises, the range of possible outcomes is wider than the base case suggests. That is not a reason to be bearish or bullish; it is a reason to be humble about the size of any single bet. The allocation is a portfolio, not a collection of trades Finally, I try to remind myself that every new position is not an isolated decision. It is a marginal change to a portfolio that already has exposures to rates, credit, equity beta, and currency. The question is not whether the new idea is good in isolation; it is whether it improves the risk-adjusted return of the whole book. That is why I spend as much time on the correlation matrix as I do on the pitch. For the affluent mandates I advise in Frankfurt, this discipline is not theoretical. It is the difference between a portfolio that compounds through cycles and one that requires a conversation with the family office about why the capital is not there when the next opportunity arrives. Keywords: position sizing, liquidity risk, alternative investments, portfolio discipline, macro allocation, Frankfurt wealth management. Disclaimer: This post is for informational purposes only and does not constitute investment advice. Past performance is not indicative of future results.