What if you bought Ethereum near its 2021 all-time high?
This uses real data to show what would have happened if you had invested a lump sum in Ethereum (ETH) in early November 2021 — when it hit an all-time high in the ~$4,800 range. We honestly include the roughly -80% crypto-winter crash that began right after.
⚠️ Know the risk first
Right after entry, Ethereum crashed to roughly 80% below its peak (the crypto winter). The final result only holds if you held through that extreme loss period, and Ethereum is an extremely volatile asset where losing most of your principal is possible.
What happened that day
In early November 2021, Ethereum hit a then-all-time high in the ~$4,800 range. NFT and DeFi fever were cresting, but rate hikes, the Terra/Luna collapse, and the FTX bankruptcy soon followed, plunging it into a crypto winter that saw it fall to roughly 80% below its peak.
Why this date
The buy date is around the 2021 record high when crypto mania crested, computing the worst-timing question 'what if you bought at the hottest peak.' The exact record-high close spans early November, so a representative day in that window is used.
Investment conditions
Asset · Ethereum (ETH) · lump-sum near the 2021 all-time high, then held long-term
Method · Lump-sum (all at once)
Period · 2021-11-10 ~ 2026-07-01
Amount · $7,407
As of · 2026-07-01
Key metrics
These results do not reflect taxes. Based on historical data.
Buy and final prices are shown in the asset's local currency (US & crypto $, Japan ¥, Korea ₩). Total invested and final value are in Korean won (₩).
Risk & recovery
As important as returns. This service does not hide maximum drawdown or loss periods.
Maximum drawdown (MDD)
-79.0%
Largest drop from peak
Longest loss period
57months
Months in loss: 57
Recovery period
0months
Growth over time
Invested principal (dashed) and portfolio value (solid). Values below match the calculation.
Total invested $7,407 → Final value $2,571 (-65.3%), Maximum drawdown (MDD) -79.0%
Why this period and asset
Early November 2021 is when Ethereum hit an all-time high in the ~$4,800 range. It was a time when NFT and DeFi fever, and the broader crypto mania, were cresting. But this record did not last. Rate hikes, the Terra/Luna collapse, and the FTX bankruptcy soon piled on, sending Ethereum into a crypto winter that saw it crash to roughly 80% below its peak. The hottest record-high moment turned out, in hindsight, to be one of the worst times to buy.
Interpreting the result
Review the final value together with the maximum drawdown in the metrics below. If you bought near the record high and held through the crypto-winter crash without selling, whether and how long it took to recover drives the result. Most people would have sold in the terror of watching their holding shrink to about a fifth, and then the story changes completely. Instead of dumping everything at the record high, investing gradually each month would have let you buy much lower during that crash — compare with the DCA cases.
Caveats & limits
The core of this event is that 'an all-time high can be the worst time to buy.' Don't look only at the final result — be sure to review the roughly -80% crash right after entry and the recovery period in the maximum drawdown metric below. Ethereum is an extremely volatile asset with very high risk, including the possibility of losing most of your principal. Figures use adjusted close and exclude exchange rates, fees, and taxes; past results do not guarantee the future.
Event fact sources
- MEXC Learn — ETH all-time high $4,878.26 in November 2021
- Axios — Ether breaks 2021 all-time high (references ~$4,866 Nov 2021 record, 2025-08)
Requested date vs actual trading date
If the event date is a holiday, the fill uses the next trading day's close. Crypto trades 24 hours, but the data uses daily closes.
Data sources & limits
- Price data source: Yahoo Finance / FinanceDataReader
- Collected on: 2026-07-28
- Effective trading date: 2026-07-01
- Price basis: Adjusted close (reflects dividends and stock splits)
- Trading fees and taxes are not reflected — figures are pre-tax.
- Based on historical data; does not guarantee future returns.
Frequently asked questions
Why use early November 2021 as the entry?
That is when Ethereum hit an all-time high in the ~$4,800 range. Choosing the record-high point at peak crypto mania, the aim is to show honestly the worst-timing question 'what if you bought at the hottest peak.'
Did it really fall that much right after buying?
Yes. Right after the peak, rate hikes, the Terra/Luna collapse, and the FTX bankruptcy piled on, and Ethereum crashed to roughly 80% below its high. You can see that crypto-winter stretch in the maximum drawdown metric below.
How is it different from Bitcoin?
Ethereum tends to be more volatile than Bitcoin, and its drawdown after the 2021 peak was deeper (about -80%). Even for the same record-high buy, altcoin-type assets can swing more extremely. Compare with the 'Bitcoin 2021 all-time high' case.
Are FX and taxes reflected?
No. Exchange rates, trading fees, and taxes are not reflected — figures are pre-tax. In reality, FX moves, taxes, and exchange fees would additionally affect your results.
Related scenarios
📋 Results are based on historical data; past returns do not guarantee future returns.
📋 This service is provided for educational purposes to help you understand investing, not as investment advice.