Which TCG Is Growing Fastest? Market Cap by Game (August 2026)

Riftbound, One Piece, Dragon Ball and vintage Pokemon compared on the Cardlogs Market Cap Index — 30-day growth on three marketplaces, plus how broad each rally really is.

Riftbound is growing fastest. According to the Cardlogs Market Cap Index, Riftbound rose 26.7% on TCGplayer, 47.5% on Cardmarket and 59.0% on eBay sold prices in the 30 days to August 7, 2026 — the only one of the four games we track where all three marketplaces agree on a double-digit gain. Its slowest feed beats every other game's fastest.

That is the headline. The more useful answer is underneath it: growth rate, how broad the rally is, and whether a second marketplace confirms it are three different questions, and the four games rank differently on each.

Which TCG is growing fastest right now?

Riftbound, on every feed. Here is the 30-day change in the Cardlogs Market Cap Index to August 7, 2026, computed separately for each marketplace:

Two things stand out beyond the winner.

Riftbound's rally is sales-led. Its eBay sold index (+59.0%) is running ahead of both ask-side feeds. That is the healthy direction: buyers are paying up faster than sellers are raising prices. Riftbound's Vendetta set launched July 31, 2026 and the game is nine months old, so it is growing off a small base — but the direction is confirmed three ways. We found the same inversion in the Riftbound market watch.

Dragon Ball's rally is ask-led, and only ask-led. TCGplayer is up 16.6% while completed eBay sales are flat at −0.4% and Cardmarket managed +2.3%. A 17-point spread between what sellers want and what buyers pay is the single least comfortable number in this table. We flagged the same split in the Fusion World market watch and it has widened since.

Does the answer change over a longer window?

Yes — and this is why a single window is a bad way to pick a winner. Measured from the index seed on May 28, 2026 through August 7, 2026 (72 days), the ranking reshuffles:

Over the full 72 days, One Piece leads on TCGplayer (+30.4%) and Riftbound is third (+19.0%) — almost all of Riftbound's TCGplayer gain arrived in the last 30 days. On the two other feeds Riftbound still leads comfortably. So "fastest growing" is a question with a date attached, and anyone quoting one number without one is guessing.

We cannot yet answer the one-year version of this question. The Cardlogs Market Cap Index seeds at 100 on May 28, 2026, so every figure on this page is bounded by 72 days of history. The 1-year field in our own data is null, and we would rather say so than annualize a 72-day trend.

How big is each market?

Vintage Pokemon, by roughly 3x the next game. These are the summed market prices of every card Cardlogs prices on each feed, as of August 7, 2026:

Size and growth rank almost exactly inversely: the largest market is the slowest, and the smallest is the fastest. That is what an early market looks like.

Read these totals carefully, and never as a game's true market size. They are the sum of the cards we price, and coverage differs by feed. One Piece's Cardmarket total (€892,183, about $1,029,129 at the ECB rate of 0.86693 EUR per USD on August 8, 2026) is larger than its TCGplayer total, purely because Cardmarket lists 11,426 One Piece cards to TCGplayer's 6,618. A market cap on this page is a coverage-weighted sum, not a valuation of the game. That is exactly why the growth numbers above come from the chain-linked index instead of from these totals.

Is the growth broad, or is it a handful of cards?

This is the question the index alone cannot answer, and it separates the four games more sharply than the growth rate does. For each game we took every English card with a TCGplayer price and a 30-day change, and asked what share of the cards that moved went up:

One Piece's market cap rose while its median card fell. The index is up 3.2% on TCGplayer, but only 46.8% of the One Piece cards that moved went up, the median mover lost 3.0%, and the top 1% of cards by dollar change — 63 cards out of 6,339 — captured 78.5% of every dollar gained. Both numbers are true. If you own a $4 One Piece common, the rally is not happening to you.

Dragon Ball is the same shape, more extreme on concentration (80.2% of gains in the top 1%) and far more illiquid: 9,439 of its 11,036 priced English cards, 85.5%, recorded no 30-day change at all. That is why we report the movers-only share rather than a raw up/down split — a flat field can mean a stable price or a card nobody traded, and those are not the same claim.

Riftbound is the exception and it is the reason it deserves the headline. Its rally is the broadest of the four (61.6% of movers up), the median mover gained 23.0%, and it is the least top-heavy (57.3%). A rising index plus a rising median is a real market; a rising index plus a falling median is a chase-card story wearing a market's clothes.

How much of the growth does a second marketplace confirm?

We take the 20 cards contributing the most dollars to each game's 30-day gain and apply the standing Cardlogs corroboration screen: a card is confirmed when Cardmarket (converted at the day's ECB rate) or the eBay sold median lands within 30% of its TCGplayer price.

This is the confidence column for everything above it, and it reorders the table again.

Vintage Pokemon's growth is the least corroborated of the four. Only 4 of its 20 biggest gainers have a second venue within 30%. The clearest case is a McDonald's Promos 2016 Togepi at $100 on TCGplayer, up 257% in 30 days, against a Cardmarket price 0.09x that — nine cents on the dollar. Some of this is structural rather than suspicious: much of the vintage Pokemon catalog is Japanese or promo material that Cardmarket never listed and that rarely appears in eBay sold data. But a number nobody else prints is a number to hold loosely.

Riftbound's four uncorroborated gainers are a specific, explainable kind. They are Metal and Prize Wall promos — Ahri, Nine-Tailed Fox (Metal) (Best Of) at $9,999.99 and Teemo, Swift Scout (Metal) (Prize Wall) at $6,000 among them — event-distributed cards that only TCGplayer lists at all, so no second venue exists to confirm or deny them. The corroborated part of Riftbound's top is solid: Ahri - Nine-Tailed Fox (Signature) at $3,800 prints 0.86x on Cardmarket and 0.88x on eBay.

One Piece and Dragon Ball both corroborate 17 of 20, which is the reassuring result — whatever the breadth problem is in One Piece, the cards driving its gain are real and priced consistently in three places. The best example is Monkey.D.Luffy (119) (SP) (Gold) at $13,000, up 206% in 30 days, with Cardmarket at 0.67x and eBay sold at 0.85x.

The one Dragon Ball failure worth naming is Energy Marker [Gold] E-48, the single largest contributor to Dragon Ball's 30-day gain: $2,400 on TCGplayer, up 711%, with Cardmarket at 0.20x. We excluded it from the ranked table in the Fusion World market watch on August 2, 2026 for exactly this reason, and it has since become the biggest single driver of a game's headline growth number. That is the whole argument for publishing a corroboration column.

What is the Cardlogs Market Cap Index?

The Cardlogs Market Cap Index is a chain-linked index, seeded at 100, that measures how the price of the same cards changed from one night to the next. Each night we compare only the cards that carry a price on both that night and the previous link date; cards that entered the catalog since then are excluded from that night's link factor and join the index from the following day.

That construction exists to defeat one specific error. A trading card catalog grows constantly — new sets, newly discovered listings, backfilled prices. Summing today's prices and comparing that sum to last month's sum measures how many cards we added at least as much as it measures the market. According to Cardlogs market data, a chain-linked index is the only honest way to state a percentage change across a population that is itself changing, which is why every growth figure on this page comes from the index and none comes from the market cap totals.

We compute it three times per game — once for TCGplayer, once for Cardmarket, once for eBay sold prices via PriceCharting — and never blend them. Two of those feeds are asks and one is completed sales; averaging them would hide the exact disagreement that makes Dragon Ball's number interesting.

Where this data comes from

Cardlogs aggregates prices nightly from TCGplayer, Cardmarket and eBay sold listings (via PriceCharting) across the 61,639 cards that carry a TCGplayer price in the four games covered here, plus PSA and BGS population data. Every figure on this page is from the nightly run of August 7, 2026 unless dated otherwise, read through the same get_all_tcg_market_caps endpoint that powers the market cap section on cardlogs.com.

Four limitations, stated rather than buried:

Vintage Pokemon's TCGplayer index is frozen and we are not quoting it. Our market cap pipeline carries a value-share guard that pins a game's index when the same-card pair backing a night's link stops representing enough of that game's value. Vintage Pokemon's TCGplayer leg has been pinned at 106.39 since August 3, 2026, with a pair count of zero on each of the last four nights. Its apparent +0.1% is the guard holding, not a market reading. Its Cardmarket (+2.8%) and eBay (+4.3%) legs are live and are what we quote. Publishing the frozen figure as a market move would have been the easiest error on this page to make.

Riftbound's eBay leg is thin. Its +59.0% rests on roughly 156 same-card pairs per night, against 1,309 for its Cardmarket leg. It agrees with the other two feeds in direction, which is why we lead with it, but it is the smallest sample in the study.

Market cap totals are coverage-weighted sums, not valuations, as described above. Cardmarket figures are native EUR and were converted at the ECB reference rate of 0.86693 EUR per USD on August 8, 2026 only where a USD comparison is made.

The history is 72 days. The index seeds at 100 on May 28, 2026. There is no one-year figure in this study because there is no one-year figure in our data.

The breadth screen uses tcg_delta_1M on English-language rows only, to avoid double-counting the Japanese and English prints of the same card, and reports movers-only shares because a zero can mean "unchanged" or "untraded".

The short version

• Fastest growing (30 days): Riftbound, +26.7% / +47.5% / +59.0%, confirmed on all three feeds and sales-led.
• Fastest growing (since May 28): One Piece on TCGplayer (+30.4%), Riftbound on the other two (+54.0% / +52.7%).
• Largest: vintage Pokemon, $2.12M across 42,503 priced cards — and the slowest of the four.
• Broadest rally: Riftbound, 61.6% of movers up with a +23.0% median.
• Narrowest: One Piece, index up 3.2% while the median mover fell 3.0% and 1% of cards took 78.5% of the gains.
• Best corroborated: One Piece and Dragon Ball (17 of 20 top gainers). Weakest: vintage Pokemon (4 of 20).
• Most internally contradictory: Dragon Ball, asks +16.6% against sales −0.4%.

If you only take one thing: a market cap number without a breadth number beside it will tell you a game is booming when the median card in it is falling. That is currently true of One Piece and it is not true of Riftbound, and no headline growth rate distinguishes them.

Cardlogs tracks all four of these markets nightly across TCGplayer, Cardmarket and eBay sold prices, on web, iOS and Android. You can follow the index for each game on its home page — Riftbound, One Piece, Dragon Ball and Pokemon — or start from the TCG market tracker overview.