XRP occupied second place in CoinMarketCap’s December 30, 2017 historical snapshot, with a circulating market capitalization of $83.64 billion. Ether ranked third at $69.34 billion, leaving XRP ahead by $14.30 billion, or 20.6% relative to ether’s capitalization. Bitcoin remained first at $217.24 billion.
The ranking was the clearest market development tied to December 30, but its chronology requires care. Contemporaneous Bloomberg reporting recorded that XRP first moved above ether on December 29. The December 30 snapshot therefore documents XRP retaining and widening that position, not necessarily the first instant of the crossover.
The numbers behind the ranking
CoinMarketCap listed XRP at $2.1590 and used a circulating supply of 38,739,144,847 XRP to produce its $83.64 billion valuation. The same snapshot placed ether at $717.26, based on 96,671,724 ETH in circulation.
XRP’s displayed seven-day change was 87.59%, while its displayed 24-hour change was negative 4.55%. Those measurements show that the ranking followed a rapid weekly advance even though the asset had pulled back over the snapshot’s shorter window. CoinMarketCap also displayed $8.11 billion of XRP volume over 24 hours, compared with $3.19 billion for ether.
These are aggregated market measurements, not official closing-auction results. Crypto traded continuously across exchanges, prices differed by venue and currency pair, and the historical page does not provide a venue-level reconstruction of every trade included in its figures. The reported volume should therefore be read as CoinMarketCap’s contemporaneous aggregate, not audited economic turnover or proof that all displayed liquidity could be executed at the quoted price.
Why second place mattered
The crossover disrupted a market hierarchy in which ether had been the principal alternative to bitcoin. It also directed attention toward the distinction between Ripple, the company; the XRP Ledger; and XRP, the ledger’s native asset. Those related names were frequently treated as interchangeable in 2017 coverage even though a commercial partnership involving Ripple did not automatically establish demand for XRP.
Supply was another important distinction. Ripple had announced on December 8 that it completed the escrow of 55 billion XRP through 55 contracts of one billion XRP each. The company said the structure limited how much could become available monthly and that unused amounts would return to the end of the escrow schedule. That primary record established the intended release mechanism, but it did not make escrowed XRP part of CoinMarketCap’s circulating-supply calculation.
Market capitalization itself was price multiplied by the selected supply figure. It was not the amount of dollars invested in XRP, an appraisal of Ripple, or a measurement of the value that could have been realized through immediate liquidation. A relatively small marginal trade could change the quoted price applied to billions of units.
Later confirmation and a methodological divide
Ripple’s subsequently published fourth-quarter report said Bitstamp’s XRP/USD 24-hour bar briefly touched $2.19 on December 30 before the quarter finished at $1.91. That is later primary confirmation of a venue-specific December 30 price, not evidence available to readers in report form on the event date.
The same report calculated a $191.0 billion XRP value for December 31 by multiplying the Bitstamp close by distributed XRP plus XRP held by Ripple, including escrow. That total-supply method was materially different from CoinMarketCap’s circulating-supply ranking. Both approaches placed XRP second, but their large valuation gap demonstrates why the supply definition, venue and measurement window belong beside any market-cap claim.
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