A hypothetical €1,000 portfolio evenly distributed across the ten largest cryptocurrencies at the market peak on December 17, 2017, would be worth approximately €925.27 by August 14, 2026, marking a decline. Massive gains in Bitcoin (BTC) and Ethereum (ETH) offset heavy losses in alternative tokens.
December 2017 remains etched in market memory as a distinct era. When Bitcoin (BTC) approached the grens van 20.000 dollar for the first time, alternative assets experienced a speculative surge. But the balance sheet tells a different story over a nearly nine-year holding period.
The Bottom Line
- The Core Retained Value: An initial €1,000 stake split into ten equal parts yielded a final valuation of €925.27 by mid-August 2026, driven by two dominant assets.
- Concentrated Outperformance: Holdings in Bitcoin (BTC) and Ethereum (ETH) accounted for the vast majority of the remaining portfolio, expanding to roughly €337 and €266 respectively from the initial €100 individual allocations.
- Ecosystem Attrition: Several former top-tier assets, including IOTA, Dash, and NEM, lost a substantial portion of their dollar value.
Portfolio Anatomy: Winners, Laggards, and the Math of Decay
To evaluate how passive indexing performs, we examine a fixed purchase date of December 17, 2017, when Bitcoin (BTC) traded rond 19.141 dollar, according to historical snapshots from CoinMarketCap. Utilizing exchange rates from the Federal Reserve economic data series (FRED) valuing the euro at 1,1778 dollar on December 15, 2017, each €100 allocation translated to 117,78 dollar per asset.
Fast-forwarding to August 14, 2026, and applying the European Central Bank reference rate of 1 euro = 1,1534 dollar from August 13, 2026, reveals a stark divergence in asset survival. Here is the math behind the portfolio performance.
| Asset | 2017 Rank | Initial Price | Quantity Purchased | Valuation (Aug 2026) |
|---|---|---|---|---|
| Bitcoin (BTC) | 1 | $19.140,76 | 0.00615336 BTC | €336,92 |
| Ethereum (ETH) | 2 | $719,98 | 0.163588 ETH | €266,23 |
| Bitcoin Cash (BCH) | 3 | $1.862,88 | 0.0632247 BCH | €11,32 |
| XRP (XRP) | 4 | $0,728416 | 161,697 XRP | €141,45 |
| Litecoin (LTC) | 5 | $318,72 | 0,369541 LTC | €14,34 |
| Cardano (ADA) | 6 | $0,513022 | 229,591 ADA | €36,29 |
| IOTA (IOTA) | 7 | $3,9291 | 29,9763 IOTA | €0,86 |
| Dash (DASH) | 8 | $1.105,92 | 0,106500 DASH | €2,79 |
| NEM (XEM) | 9 | $0,6878 | 171,242 XEM | €0,07 |
| Monero (XMR) | 10 | $351,37 | 0,335202 XMR | €115,00 |
The concentration risk embedded within a naive top-ten strategy becomes clear. While Bitcoin (BTC), Ethereum (ETH), XRP, and Monero (XMR) provided a combined buffer, the remaining positions collapsed. For instance, the €100 deployed into IOTA dwindled to €0.86, compounded by structural network changes, including tokenomics adjustments and migrations toward the IOTA Rebased architecture, where 4,6 miljard tokens were migrated to the new network.
Strategic Takeaways for Modern Portfolio Allocators
This historical simulation excludes transaction fees, spreads, staking rewards, and network forks. The core takeaway is that market dominance in a speculative cycle does not guarantee long-term protocol survival.
As digital asset markets mature, capital preservation relies on rigorous fundamental analysis rather than passive capitalization weighting.
