Portfolio Tracker vs. Spreadsheet: An Honest Look
A spreadsheet is free but manual; a tracker prices itself but costs money. We compare the two on accuracy, effort, and trust so you can pick with open eyes.
Spreadsheets are the default way people track investments, and for good reason: they are free, flexible, and familiar. So when is a dedicated tracker actually worth it? Here is the comparison without the sales pitch.
The honest trade-off
| Spreadsheet | Tracker | |
|---|---|---|
| Cost | Free | Usually paid |
| Prices | You paste them | Fetched automatically |
| Cost-basis math | Manual formulas | Computed for you |
| Across brokers | Copy-paste each one | One combined view |
| Staleness | Drifts between edits | Current on load |
Neither wins outright. A spreadsheet is unbeatable for flexibility; a tracker wins on staying current without effort.
Where spreadsheets shine
If you enjoy building formulas, want total control over the layout, and don't mind updating prices by hand, a spreadsheet is genuinely fine. It is also the best place to model scenarios a tracker won't — custom what-ifs, odd assets, your own ratios.
A modern Sheets tracker is better than its reputation, too. The GOOGLEFINANCE
function fetches prices automatically, so the "you paste them" row above is only
true of Excel and of sheets nobody has wired up. We publish
a free template with those formulas already
in place, and a guide to the function itself if
you want to build your own.
Where they fall down
The failure mode is always the same: the sheet goes stale. The cost basis is only right until your next purchase, and the prices are only right until the market moves.
Note that automating prices does not fix this. GOOGLEFINANCE keeps the price
column current and has no idea what you paid — so the half of the calculation
that determines your gain is exactly the half that still drifts. A sheet with live
prices and a stale basis looks healthier than one where everything is obviously
old, and reports a wrong number with more confidence.
Note
A tracker is not "better" — it is a different deal. You trade a monthly cost for never doing price entry again. Whether that trade is worth it depends on how often your holdings change.
What you actually need to track
Whichever you choose, the same handful of fields have to stay current:
| Field | Why it matters |
|---|---|
| Ticker & shares | Identifies the position and its size |
| Cost basis | Sets your gain when you sell |
| Live price | The only number that is honestly "now" |
| Unrealized P/L | What you would make selling today |
The trick is that the last two should update themselves. If a human has to refresh them, they won't stay fresh.
You hold 15 shares of AAPL at a $180 basis ($2,700). Instead of pasting a
price weekly, the tracker fetches it on load:
- Price now:
$210→ market value15 × $210 = $3,150 - Unrealized gain:
$3,150 − $2,700 = $450
Tomorrow the price is different and so is the gain — with no edit from you.
Moving off the spreadsheet
If you decide to switch, the practical steps are short:
- List every holding once, with shares and what you paid.
- If you bought a holding several times, blend the purchases first — the cost basis calculator does it in one screen.
- Let the tool fetch prices so market value and unrealized P/L compute themselves.
- Add transactions as they happen instead of rebuilding a sheet.
This is exactly what StoxDeck does — enter a holding once and it prices itself from then on. Build your first deck →
Making the call
Ask yourself: how many accounts, how often do they change, and how much do you trust your own upkeep? If the answer is "several, often, and not much," a tool that combines every account and prices it live will pay for itself in Sunday nights reclaimed.
If the answer is "one account, rarely, and I quite enjoy it" — keep the spreadsheet. It is a legitimate choice and this page is not trying to talk you out of it.