Holding many uncorrelated investments to reduce the risk that any single one wrecks your returns. Often called 'the only free lunch in investing'.
Diversification is the practice of holding many uncorrelated or weakly-correlated investments so that no single one can wreck your portfolio. Famously called 'the only free lunch in investing' by Harry Markowitz.
The intuition: if 30 stocks each have a 1-in-20 chance of going to zero, holding all 30 means at most 1 – 2 might fail. Holding 1 of them means a 5% chance of losing everything. Same expected return, dramatically different risk profile.
Number of holdings: 20 – 30 individual stocks captures most diversifiable risk within a sector / market.
Sectors: tech, consumer, financials, energy, healthcare — different sectors lead and lag in different economic regimes.
Geographies: US, Europe, developed Asia, emerging markets. Country-specific risks (political, currency, local recessions) wash out across regions.
Asset classes: stocks vs bonds vs commodities vs real estate. Genuine diversification comes from holding things that don't move together.
Owning many funds that hold the same things. S&P 500 ETF + total market ETF + tech ETF + QQQ is one concentrated bet on US tech, not diversification.
Home bias: holding 80% Singapore equities just because you live here. SG market is highly concentrated in banks and REITs. Add global exposure.
Over-diversification: owning 100+ stocks or 20 funds dilutes returns to the market average minus fees. Diversification has diminishing returns past ~30 holdings or 3 – 5 broad funds.
Confusing diversification with hedging: an inverse ETF or short position 'diversifies' your returns to zero. The goal is uncorrelated growth, not opposite directions.
Three-fund simplicity: VWRA (global equities) + SGS bonds + cash. Captures most diversification with three holdings.
Singapore-tilted: STI ETF (local) + CSPX (US) + EIMI (emerging markets) + SGS bonds. Adds home-currency cash flows alongside global growth.
FIRE-focused: 100% VWRA in accumulation phase, shifting toward bonds and CPF LIFE as retirement approaches.
Diversification doesn't shield you from market-wide crashes (everything fell in 2020 and 2022). It protects you from idiosyncratic failures of single stocks, sectors, or countries.
Holding a mix of investments across different asset classes, sectors, geographies, and risk levels so no single failure can wipe out your portfolio. Famously described as 'the only free lunch in investing' — you reduce risk without giving up expected return.
Roughly 20 – 30 individual stocks across different sectors capture most diversifiable risk. Single ETFs (like VWRA or CSPX) provide instant diversification across thousands of companies — making them the simplest path to diversification for retail investors.
Limited. The STI is dominated by 3 banks (DBS, OCBC, UOB) and a handful of REITs / industrials. Singapore-only is a concentrated bet on local financial-sector performance. Most balanced portfolios add global ETFs (US, developed, emerging markets) to truly diversify.
Yes — holding 50+ funds or 200+ stocks dilutes returns to the market average minus complexity costs. Diversification has diminishing returns beyond ~30 holdings or 3 – 5 broad funds. Avoid the trap of buying many overlapping S&P 500 / global / tech ETFs.