Portfolio
In short
Your complete collection of investments — the sum of all positions
Your portfolio is everything you own as an investment — all your stocks, bonds, cash, ETFs, and crypto combined. Portfolio management is about how you combine these investments to meet your goals with acceptable risk.
A portfolio is the aggregate of all investment positions. Portfolio-level analysis considers not just individual asset performance but how assets interact (correlation). Modern Portfolio Theory shows that combining low-correlation assets improves the risk/return frontier.
Related concepts
- Diversification — If you put all your money in one stock and it crashes, you lose everything. Spread it across 20 different stocks, sectors, and even countries — when one falls, others may rise, protecting your overall wealth.
- Asset Allocation — Asset allocation is how you divide your money between different types of investments. A classic '60/40' portfolio is 60% stocks, 40% bonds. It's the most important decision in investing — determines most of your long-term returns and risk.
- Rebalancing — Rebalancing forces you to sell what's risen (expensive) and buy what's fallen (cheap) to restore your target mix. It's systematic discipline — the opposite of the emotional tendency to chase winners.
- Benchmark — A benchmark is your measuring stick. If you earned 12% but the S&P 500 (your benchmark) earned 15%, you actually underperformed despite making money. Most active managers struggle to consistently beat their benchmark.