What if you bought Hyundai on the day the 'Apple Car' rumor sent it soaring?
This uses real data to show what would have happened if you had invested a lump sum in Hyundai Motor (005380) on January 8, 2021 — the day it surged on news it might co-develop an EV with Apple. We honestly examine the result of buying near a peak in the heat of a rumor.
⚠️ Know the risk first
The partnership rumor later collapsed. Judging the result of buying on a rumor-spike day honestly requires viewing the post-hype correction and maximum drawdown together.
⚠️ This asset is an individual stock chosen as of today, so past returns can look better than they really were (survivorship bias).
What happened that day
On January 8, 2021, Hyundai's shares jumped roughly 20% in a single session after it acknowledged early-stage talks with Apple over a self-driving EV. Within hours it revised its statement twice to remove the 'Apple' reference, and the rumored partnership ultimately fell through in early 2021.
Why this date
The buy date is the day the stock spiked on the biggest news of the moment — the Apple Car rumor — computing the question 'what if you bought, excited, on hot news' directly.
Investment conditions
Asset · Hyundai Motor (005380) · lump-sum on the Apple Car rumor surge day, then held long-term
Method · Lump-sum (all at once)
Period · 2021-01-08 ~ 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)
-40.0%
Largest drop from peak
Longest loss period
37months
Months in loss: 44
Recovery period
0months
Growth over time
Invested principal (dashed) and portfolio value (solid). Values below match the calculation.
Total invested $7,407 → Final value $18,170 (+145.3%), Maximum drawdown (MDD) -40.0%
Why this period and asset
January 8, 2021 was the day Hyundai's shares jumped roughly 20% in a single session after it acknowledged it was in early-stage talks with Apple over developing a self-driving EV. Excitement over an 'Apple Car' pushed its market value up by trillions of won, and affiliates like Hyundai Mobis and Hyundai Wia surged too. But within hours Hyundai revised its statement twice to remove any mention of 'Apple,' and the partnership rumor ultimately fell through in early 2021. Buying on this date represents the classic situation of jumping in, excited, on the day the hottest news breaks.
Interpreting the result
If you bought on the day it spiked on a rumor and never sold, check the final value and annualized return (XIRR) in the metrics below. The key question is how the stock actually moved after the partnership talk collapsed. See — alongside the maximum drawdown — that 'the day a stock jumps on good news' is not necessarily a good time to buy, and that the excitement was followed by a correction and stagnation. Investing the same money gradually each month instead of all at once would have reduced the risk of piling in on a single spike day.
Caveats & limits
'Buying on a rumor spike day' is a classic situation where emotions take over. Don't look only at the final return — always review the correction after the rumor collapsed and the maximum drawdown and loss periods. As a single stock, be mindful of survivorship bias too — many stocks that rode similar theme spikes never recovered. Figures use adjusted close and exclude trading fees and taxes (pre-tax). This is past data only and does not guarantee the future.
Event fact sources
- CNBC — Hyundai Motor says it is in early talks with Apple, shares soar (2021-01-08)
- Bloomberg — Hyundai Walks Back Confirmation It's in Talks Over Apple Car (2021-01-08)
Requested date vs actual trading date
If the event date is a holiday, the fill uses the next trading day's close. 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)
- This asset is an individual stock chosen as of today, so past returns can look better than they really were (survivorship bias).
- Trading fees and taxes are not reflected — figures are pre-tax.
- Based on historical data; does not guarantee future returns.
Frequently asked questions
Did Hyundai really surge that much that day?
Yes. On January 8, 2021, Hyundai jumped roughly 20% in a single session after acknowledging early talks with Apple on EV development. Apple Car hopes spread to its affiliates, and its market value swelled sharply that day.
What happened with the Apple partnership?
Within hours, Hyundai revised its wording twice to remove the mention of 'Apple,' and the rumored partnership ultimately did not materialize in early 2021. How the rumor-driven surge corrected afterward is central to this event.
Why use the surge day as the buy date?
To illustrate the question, 'what happens if you buy, excited, on the day the biggest news breaks?' The intent is to check with real data whether a good-news spike day is actually a good time to buy.
Are FX and taxes reflected?
This is a Korean stock shown in won, so there is no exchange-rate variable. However, trading fees and taxes are not reflected (pre-tax). This page only shows historical data and recommends no specific stock.
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.
⚠️ Calculated using today's representative assets, which may differ from the market composition at the time.