Investment decisions are hard. Broadly, you have two choices: let someone else manage your money, or manage it yourself. If someone else does, you should at least benchmark their returns — we wrote about that here. If you do it yourself, you need to know how to compare your options before you can decide between them.

Comparing investment options is a broad topic, but an important part of it is comparing past performance. We will look at how charts help in comparing returns. Past performance is no guarantee, but it is one indicator of what might lie ahead.

So, how do you actually compare options? Judging by what most sites show, the usual answers are CAGR (over set periods like 1y, 3y, 5y) and the NAV chart. Both summarize past performance, and both are useful — but they're biased summaries, not the only way to look. The same performance reads differently from different angles. We'll walk through a few of those angles here, and build mental models so you're not lost in front of any benchmark.

When you invest money, two different factors influence its growth.

First is the asset performance. If you buy gold, this is simply the price of gold over time. If you buy a mutual fund, this is the NAV — how the value of one unit of the fund changes as the underlying assets move. This part is independent of you. It reflects the quality of the asset or, in the case of a fund, the decisions of the fund manager.

Second is timing of your investment. The same asset, with the same price curve, can produce very different outcomes depending on when you put money in, how much you add, and when you exit. This part is entirely about your decisions.

Mutual funds make this separation explicit. The NAV shows how the fund performed as a product. Your actual return depends on the NAV and your timing. By comparing both against a benchmark, you can see whether returns came from good asset performance, good timing, or a mix of both.

What’s less obvious is that you can do the same analysis for your own portfolio.

If you treat your portfolio as a “fund” you manage, you can construct a NAV-like growth curve for it. That lets you evaluate yourself in two roles at once:

• as a fund manager: how good is the underlying portfolio compared to a benchmark?
• as an investor: how good were your investment decisions into that portfolio?

When you look at both, interesting patterns emerge. You might see a strong portfolio with poor realized returns, decent returns from a weak portfolio due to lucky timing, or cases where both beat the benchmark.

In this article, we’ll look at the charts that make these distinctions visible — one that benchmarks portfolio quality, and another that benchmarks your actual returns. We’ll define the terms clearly, walk through examples, and finally show how FinBodhi helps you see these two layers separately.

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