How to Track Your Crypto Portfolio

Why a Spreadsheet Stops Working

For a single holding bought once, a note on your phone is enough. The reason people move on from that is not complexity but arithmetic that changes every second. A useful portfolio view needs a current price for every asset, applied to your quantity, compared against what you paid, across however many places you hold things.

That means the two hard parts are price data and record-keeping, and a tracker takes the first one off your hands. CoinMarketCap's tracker updates continuously, described on its own page as "updating 24/7 using price data from the biggest exchanges," across a catalogue the site counters put above 59M assets and 970 exchanges. The record-keeping half stays with you, which is the part worth doing properly.

For the wider question of how to think about allocation and risk rather than measurement, the complete guide to crypto portfolio management covers that ground.

Watchlist or Portfolio: Which One You Need

These get used interchangeably and they are not the same tool.

Most people end up wanting both, for different assets. Coins you are researching belong on a watchlist. Coins you own belong in a portfolio. On CoinMarketCap both live in the same account, and a watchlist syncs between the mobile app and desktop.

Setting Up CoinMarketCap Portfolio

Two things are worth knowing before you start.

It is free and requires an account. The portfolio page offers "Create your Portfolio" or "Log In," and the tracker itself is free to use. There is no paid tier for portfolio tracking.

It works on web and mobile, with the same data. The tracker is available on iOS and Android as well as the web, and the product page describes syncing your data between desktop and mobile so the same holdings show up wherever you open it.

Create a portfolio and the first screen asks how you want to fill it. That choice is the next section, and it decides how much upkeep the tracker needs from then on.

Three Ways to Add Your Holdings

CoinMarketCap's support note on the portfolio sets out all three: transaction details entered directly, on-chain addresses that update automatically, or signing in to a supported exchange. You can use more than one in the same portfolio, and you can run several portfolios, so a long-term holding can sit apart from active trades.

1. Paste an on-chain address Updates itself

   You give the tracker a public wallet address and it reads the balances at that address, then keeps them current on its own. No signature and no connection to your wallet software is involved, because a public address is all it needs.

   The onboarding screen lists 26 supported networks, covering both EVM chains and non-EVM ones:

   BitcoinEthereumSolanaBNB Smart ChainBaseArbitrumOptimismPolygonCardanoTRONSuiLitecoinDogecoinBitcoin Cashand 12 more

   CoinMarketCap's walkthrough of the tracker describes the same thing as connecting "both EVM-compatible and non-EVM-compatible wallets." This is the method that scales, since anything that arrives at that address later shows up without you doing anything.

2. Sign in to a supported exchange Updates itself

   Binance and OKX can be connected directly, and the product describes this as syncing assets from the account "without using API key," so there is no read-only key to generate and paste. Those are the two available, and the same screen carries a "Don't see your preferred exchange? Tell us" link.

3. Enter transactions by hand You maintain it

   This reaches anything the other two do not, and it is the method where you set every field yourself. Rather than typing a balance you record what happened: a buy, a sell or a transfer, with the quantity, the price, the date, any fees and an optional note. Those fields are what the cost basis and profit figures are built from.

   The step-by-step is set out in how to use the CoinMarketCap Portfolio, which also covers privacy mode for checking balances somewhere public.

Which to use comes down to upkeep. An address or a connected exchange account keeps itself current, which suits holdings that move often. Hand-entered transactions take more effort and give you control over every number. They combine, so most portfolios end up with some of each.

What the Numbers Mean

Once your holdings are in, the tracker shows a current balance and a profit or loss figure. Two things about that number are worth understanding, because they are where most confusion starts.

CoinMarketCap publishes the formulas it uses, including average buy price, cost basis and the difference between realized and unrealized profit, in how CMC calculates your portfolio profits. It is worth a read if you want to reconcile a figure rather than take it on trust.

Keeping It Accurate

Synced addresses and exchange accounts keep themselves current, so the habits below apply to the part of the portfolio you enter yourself. Three of them do most of the work.

The mobile app also carries alerts alongside market data and conversion tools, which is the practical way to hear about a move without watching a screen.

Building Your Own Tracker With the CoinMarketCap API

The product handles tracking for most people. If you would rather build the view yourself, into a spreadsheet, a dashboard or your own app, the same market data is available through the CoinMarketCap API, and the free tier is enough to start.

Free Basic access spans 60+ endpoints with one API key, and one month of intraday history alongside the daily figures.

For a portfolio view the pattern is straightforward: hold your own record of quantities and cost, then call the Quotes Latest endpoint for current prices and multiply. The record-keeping is the same work the product does for you; what the API adds is control over where the numbers land.

You can try it before creating anything. The keyless public API answers with "no API key, no signup, no headers," which is enough to confirm the response shape for the assets you hold before you commit to a plan.

What a Portfolio Tracker Is Not

This shapes what to expect from it. CoinMarketCap describes the portfolio as "strictly informational and for tracking purposes," and states that users cannot buy, sell or perform other asset transactions on CoinMarketCap, which "is not an exchange or wallet."

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