What if you bought Bitcoin at the peak of the 2017 mania?
This uses real data to show what would have happened if you had invested a lump sum in Bitcoin in December 2017 — at the roughly $20,000 all-time high, when 'Bitcoin mania' first went mainstream. We honestly examine the crypto-winter crash that followed.
⚠️ Know the risk first
Right after the peak purchase, the 'crypto winter' sent Bitcoin crashing over 80% from its high. The star of this case is not the final return but the extreme drawdown and long loss period.
What happened that day
In mid-December 2017, Bitcoin hit its then all-time high near $20,000 as 'coin mania' peaked. But the 'crypto winter' began right after, and in 2018 it crashed over 80% from its high.
Why this date
The buy date is December 17, 2017 (near the then all-time high), the peak of coin mania, computing 'what if you bought when the fervor was hottest.'
Investment conditions
Asset · Bitcoin (BTC) · lump-sum at the 2017 mania peak, then held long-term
Method · Lump-sum (all at once)
Period · 2017-12-17 ~ 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)
-83.1%
Largest drop from peak
Longest loss period
36months
Months in loss: 38
Recovery period
21months
Growth over time
Invested principal (dashed) and portfolio value (solid). Values below match the calculation.
Total invested $7,407 → Final value $23,221 (+213.5%), Maximum drawdown (MDD) -83.1%
Why this period and asset
In the second half of 2017, Bitcoin multiplied several times over in months and became a nationwide talking point. In mid-December it hit its then all-time high near $20,000, with 'you have to buy even now' fervor at its peak. But right after that peak came the so-called 'crypto winter,' and in 2018 Bitcoin crashed over 80% from its high. It's a classic case where the hottest moment of fervor was the most expensive buy point.
Interpreting the result
Read the final value versus total invested and the maximum drawdown below together. After buying at the peak of the mania, you had to pass straight through an 80%-plus crash and a very long loss period. Even if the price later recovered, it means enduring the terror of your holding shrinking to about a fifth of its value in between. Whatever the final number, the star of this case is 'the extreme drawdown and long recovery after a peak-mania purchase.' Most people would have sold during that crash.
Caveats & limits
The key here is not the final return but the 80%-range crash and long loss period right after a peak-mania purchase. Bitcoin is more volatile than any other asset on this page and a high-risk asset where you could lose a large part of your principal. Always review the maximum drawdown and loss periods. Figures use adjusted close and exclude exchange rates, fees, and taxes, and past results do not guarantee the future. This page recommends no asset.
Event fact sources
- CoinDesk — Bitcoin 2017 price run and December high coverage (2017-12)
- Reuters, Bitcoin all-time high and 2018 crash coverage
Requested date vs actual trading date
If the event date is a holiday, the fill uses the next trading day's close (crypto mostly trades daily). The 'effective trading date' below is the date actually used.
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 December 17, 2017 as the buy date?
Around then Bitcoin hit its then all-time high near $20,000 and 'coin mania' was at its peak. It best captures 'what if you bought when the fervor was hottest.'
How far did it fall right after?
After the December 2017 peak came the 'crypto winter,' and in 2018 Bitcoin crashed over 80% from its high. Buying at the mania peak would have meant passing through a stretch where the holding shrank to about a fifth.
It rises later, so isn't it fine in the end?
Even if the price later recovered, it requires the extreme premise of holding through an 80%-range crash and a very long loss period without selling. Most would have sold in that terror, and then the result is the opposite.
Are FX and taxes reflected?
No. Exchange rates, trading fees, and taxes are not reflected — figures are pre-tax. This page only shows historical data and recommends no asset.
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.