In France, the Livret A has displayed a rate of 1.5% since February 2026. With inflation remaining above this threshold, leaving savings in a savings account results in a loss of purchasing power each year. Successfully investing and growing capital requires moving beyond this logic of nominal yield to think in terms of real yield, after inflation.
Real Yield vs. Nominal Yield: The Distinction Imposed by the Market
The Banque de France regularly publishes a dashboard of household savings. The 2023 and 2024 editions highlight a fact rarely emphasized in banks’ commercial grids: some “risk-free” investments have delivered a yield lower than inflation since 2021. Classic euro funds, non-regulated savings accounts, fixed-rate term accounts: their positive nominal yield masks a real erosion of capital.
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Thinking in terms of real yield changes the hierarchy of investments. A euro fund yielding 2.5% gross in an inflation context of 3% produces a negative real yield. A global equity ETF that delivers an annualized performance exceeding inflation over the long term preserves purchasing power but exposes investors to volatility that not all profiles can absorb.
Before comparing financial products, one must ask this question: what is the net yield after inflation that each investment can offer over the horizon I set? Platforms like Full Invest help structure this reflection by crossing risk profile and wealth objectives.
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ESG Preferences and Portfolio Composition: What MiFID II Changed
Since 2023, the MiFID II directive requires distributors of financial products (banks, wealth management advisors, robo-advisors) to gather the client’s ESG preferences before any recommendation. This regulatory obligation concretely modifies the composition of portfolios offered to the general public.
An investor who declares environmental sensitivity will be offered funds aligned with the European taxonomy or classified as SFDR article 8 or 9. This filter reduces the investment universe, which can affect diversification.
The available data does not allow for definitive conclusions about the impact of this ESG filter on long-term performance. However, a report from the Bank for International Settlements published in 2024 indicates that the climate factor is beginning to be integrated into the cost of capital for companies. Companies most exposed to climate risks see their financing costs increase, while those with better ratings benefit from cheaper access to capital.
For an individual investor, the consequence is direct: ignoring the ESG factor in portfolio construction means neglecting a parameter that is already impacting asset valuation.
Capital Diversification: Beyond the Stocks-Real Estate Reflex
Most investment guides recommend “not putting all your eggs in one basket.” The advice is correct but insufficient. Diversifying between stocks and real estate does not protect against all market scenarios, as these two asset classes can decline simultaneously during periods of rising rates.
Effective diversification incorporates several dimensions:
- Diversification by asset classes: stocks, bonds, real estate, commodities. Each class reacts differently to economic cycles, and their correlation varies over time.
- Geographical diversification: concentrating your portfolio on French stocks exposes you to country risk. Global ETFs spread this risk across multiple economies and currencies.
- Temporal diversification: investing regularly (dollar-cost averaging) rather than all at once reduces the risk of buying at the peak of a cycle.
The PEA remains a relevant tax tool for the European equity pocket, while multi-support life insurance allows for combining euro funds and unit-linked accounts within a single envelope. Field feedback varies on the optimal level of euro funds to retain: some advisors recommend limiting this pocket to the strict necessary to maximize real yield, while others prefer to maintain a broader safety base.
Cognitive Biases and Risk Management: Costly Mistakes
The main threat to a portfolio is often neither the market nor taxation, but the behavior of the investor themselves. Two biases recur in financial literature.
The recency bias leads to overweighting recent performance. An asset class that has performed well over the last two years attracts more flows, often at a time when its potential for growth is diminishing. Buying after a strong rise and selling after a strong drop is the most destructive value pattern for a saver.
The confirmation bias leads to seeking only information that validates a decision already made. An investor convinced by rental real estate will not look at data on vacancy rates or rising condominium fees in certain areas.
Two practices can help limit these biases:
- Define a target allocation in advance (for example, a distribution between stocks, bonds, and real estate) and rebalance it once or twice a year, regardless of the emotional news of the market.
- Write down your investment strategy before investing: horizon, objective, maximum acceptable loss tolerance. This document serves as a safeguard when volatility triggers impulsive reactions.
Risk management does not mean eliminating risk. It means calibrating the level of risk according to what one can actually bear, financially and psychologically, over the expected duration of the investment.
A portfolio built on these foundations, periodically reassessed and protected from impulsive decisions, gives capital the best chance to grow in real terms. The question of yield then arises less in terms of annual percentage than in terms of wealth trajectory over ten or twenty years.