What if you bought the KODEX battery ETF at the 2023 mania peak?
This uses real data to show what would have happened if you had invested a lump sum of ₩10M in KODEX Secondary Battery Industry (305720) on July 26, 2023, when the battery-theme mania peaked. The drawdown of buying at a theme-mania top is the main story.
⚠️ Know the risk first
It plunged within days of the mania peak, and a large correction followed as enthusiasm faded. The final result only holds if you held through that drawdown without selling.
What happened that day
In July 2023, battery names like Ecopro soared and Korea's theme mania peaked. Around July 26, related ETFs hit record levels, then plunged right after and entered a long correction.
Why this date
The mania peak, when battery names and theme ETFs surged to record levels, is used as the buy date, computing 'what if you bought at the hottest moment of the theme' at that day's close.
Investment conditions
Asset · KODEX Secondary Battery Industry (305720) · lump-sum near the 2023 theme-mania peak, then held long-term
Method · Lump-sum (all at once)
Period · 2023-07-26 ~ 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)
-74.2%
Largest drop from peak
Longest loss period
37months
Months in loss: 37
Recovery period
0months
Growth over time
Invested principal (dashed) and portfolio value (solid). Values below match the calculation.
Total invested $7,407 → Final value $3,091 (-58.3%), Maximum drawdown (MDD) -74.2%
Why this period and asset
July 2023 was when Korea's 'secondary-battery mania' peaked, as names like Ecopro soared. Around July 26, related stocks and theme ETFs surged to record levels and retail investors piled in. But the mania peak did not last: KODEX Secondary Battery Industry plunged within days and entered a long correction as the theme cooled.
Interpreting the result
The focus here is 'how deep and how long you were underwater after buying at the hottest point of a theme.' Look at the maximum drawdown and loss periods first. The battery theme ETF plunged right after the mania peak, and as the enthusiasm faded, a stretch with the principal far underwater followed. It shows how risky it is to put everything in at once when a theme is hot. Monthly DCA would have reduced the all-in-at-the-top risk, but it could not have avoided the theme-correction loss.
Caveats & limits
As a theme-mania-top purchase, the plunge and stall period is central to this event. It shows that when a theme is most talked about may be the riskiest time to buy. This ETF is concentrated in one industry (batteries) and is far more volatile than the whole market. Figures use adjusted close and exclude fees and taxes (won-denominated); always review the maximum drawdown and loss periods. Past results do not guarantee the future.
Event fact sources
- KED Global — POSCO/battery affiliates share surge (2023-07)
- Korea Times — POSCO Holdings surpasses Hyundai on battery boom (2023-07)
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)
- Trading fees and taxes are not reflected — figures are pre-tax.
- Based on historical data; does not guarantee future returns.
Frequently asked questions
What exactly is this ETF?
Ticker 305720 is KODEX Secondary Battery Industry, a theme/industry ETF holding Korean secondary-battery (battery) companies. Being concentrated in one industry, it is far more volatile than broad indexes like the KOSPI or KOSPI 200.
Why use July 26, 2023 as the buy date?
Around then, battery names like Ecopro soared and the theme mania peaked, with related ETFs at record levels. It best captures 'what if you bought at the hottest moment of the theme.'
How much did it fall right after buying?
It plunged within days of the mania peak, and a large correction followed as the theme cooled. See that stretch in the maximum drawdown and loss-period metrics below. The final result rests on having endured that drawdown.
Are fees and taxes reflected?
No. Trading fees and taxes are not reflected — figures are pre-tax (won-denominated). This page only shows historical data and recommends no stock or theme.
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.