Collection OS for trading cards

Know exactly what your collection is worth.

Cardholm tracks every card and sealed box you own, values it against real market prices, and shows your gains and losses the moment they move. Your whole collection — organized, priced, and honest about the numbers.

Raw, graded & sealed · prices refresh daily · free to start
cardholm.com/dashboard
Good evening, Alex
Your collection is up +7.5% this week.
+ Add card
Total value
$48,920
▲ +7.5%
24h change
−$612
▼ −1.24%
Unrealized P&L
+$13,240
cost $35,680
Portfolio value
1W1M1Y
Top movers
Charizard · Base
PSA 9
$8,400
▲ +6.2%
Pikachu · Jungle
PSA 10
$1,120
▲ +3.1%
Blastoise · Base
PSA 8
$2,050
▼ −2.4%
Tracks values acrossPokémonraw, graded & sealed
What Cardholm does

The core, done properly.

Track every card

Log copies by set, condition, and grade. Cardholm keeps your cost basis and quantity so nothing gets double-counted.

Umbreon · Evolving Skies×2 · PSA 10
Lugia · Neo Genesis×1 · raw NM

Real market values

Every card is priced against real market sales and refreshed daily — so the number you see is the number the market says.

Market price▲ +4.8%
$1,240

Gains & losses

See unrealized P&L against what you paid. Every change carries its sign and arrow — no guessing which way it went.

This month▲ +$2,180
Yesterday▼ −$612
Grading tools

Know before you grade.

Pick a grading company and service tier, and Cardholm estimates the value at each realistic grade from real per-grade sales — then subtracts the actual fees and shipping to show what you'd net. See the break-even grade and the top-grade upside before you ever mail a card.

  • PSA, CGC & BGS with real, dated fee estimates
  • Break-even grade and net-after-fees, per grade
  • PSA population counts, so you know how rare that grade is
Should I grade this?
Charizard · Base Set · assessed NM
PSA · Value
PSA 8$520net −$120
PSA 9break-even$900net +$260
PSA 10$2,400net +$1,760
Fee $40 · ~20 day turnaroundPSA 10 pop 1,240
More depth

A market desk, not just a list.

Sealed products

Track sealed boxes, ETBs, and packs beside your singles. Priced daily and folded into your total value, P&L, and allocation.

SV 151 · Booster Box×1 owned
$214▲ +2.1%

Movers & alerts

Daily gainers and losers, a watchlist with buy and sell price targets, and alerts in-app plus a daily email digest.

Charizard · Base
PSA 9
$8,400
▲ +6.2%
Pikachu hit your $1,100 sell target

Scan & import

Add a card by photo, find anything with fuzzy search, or bulk-import a whole binder from a CSV.

Charizard Base Set
Charizard · Base Set#4 · Holo
Charizard · Base Set 2#4 · Holo

Plus set-completion tracking, a shareable public showcase, realized P&L on sold cards, multi-currency (USD / EUR / GBP), and a pull-rate simulator.

How it works

From shoebox to portfolio in three steps.

01

Add your cards

Search a card, pick the set and grade, set what you paid. Add one or a whole binder.

02

We price it

Cardholm matches each copy — cards and sealed — to real market data and values it every day, automatically.

03

Watch it move

Track total value, daily change, and P&L over time — and know when to hold or sell.

Who it's for

Built for anyone who owns cards worth knowing.

The collector

Finally see the whole binder in one place, organized by set and grade — not scattered across sleeves and spreadsheets.

The investor

Treat cards like an asset class: real cost basis, unrealized P&L, and allocation you can actually reason about.

The seller

Watch daily movers and market trends so you know the right moment to list — and what the market will bear.

Cardholm on your desktop
A native desktop app is in the works — your whole collection in a dedicated window.
Coming soon

Start knowing what your collection is really worth.

Add your first card in under a minute. Free to start, no card required.