Skip to content
Quant500 - Quantitative Analysis
Search ticker or company...
ES | EN

My Personal Portfolio

Write down what you actually hold —which company, how many shares, when and at what price— and this page values it with each day's real price, dividends included, and puts it next to what the model would have picked in your same sector on your same date. It is not a backtest and not a recommendation: it is your portfolio measured with the same rules as the model portfolios. Without an account it is saved in this browser; with one, on any device.

Current value$0.00last available close × shares
Gain / loss—price only, no dividends
Real return—time-weighted, with dividends
Versus the index—RSP, the equal-weight S&P 500 ETF, since your first purchase
Any S&P 500 company; the list drops down as you type.
Fractions allowed (0.5).
Everything is measured from here: price, return and what the model picked on that date.
Leave it empty and we use that day's close.
Paste several positions at once

One position per line, in this order: company, shares, date and, if you want, the price you paid. Spaces, commas, semicolons or tabs all work, which is how a broker table comes out when you copy it. With no price we use that day's close. Lines we cannot read stay in the box with the reason: none is dropped silently.

1
Write down a purchase

Ticker, number of shares and date. We look up the price; if you paid something else, type it.

2
See what it is worth today and what it has really returned

Value and gain at the last close, and below it the time-weighted return with dividends, the maximum drawdown, the volatility and every other figure that can be computed with the life your portfolio has. What cannot be measured yet is explained, not filled in.

3
Compare it with the model

For each position, the company in your sector that the model scored highest on the date before your purchase, with the same money on the same day. Without looking at today's ranking. It is a look back, not a proposal to sell or buy anything.

Six well-known positions bought on three dates. It is not saved and disappears as soon as you add your first one.

What this page compares

Write down what you actually hold — which company, how many shares, when and at what price — and the page values it with each day's real close, dividends included. Next to it, position by position, it puts what the model would have bought: the company in the same sector that scored highest the day before that purchase, with the same money and on the same day.

The comparison never looks at today's ranking, which is the usual trap in this kind of exercise: it uses only what was known back then. And both sides are measured the same way: time-weighted return with dividends, maximum drawdown and volatility.

Compared against the 466 companies scored as of Sep 24, 2026.

S&P 500 market gravity