A Crypto-Loving Doctor in His 40s Swapped Impulse Trades for a Disciplined AI-Focused Portfolio

Source

Korea Economic Daily

Summary

A had been making impulsive investments in risky assets such as stocks and Bitcoin, increasing volatility in his portfolio.
He then cleared out out-of-favor stocks and rebuilt the portfolio around AI, infrastructure, the S&P 500, and the Nasdaq 100.
He plans to keep 20%% to 30%% of total assets in cash-like instruments such as MMF to prepare for buying on dips during market corrections and for early retirement.

Forecast Trend Report by Period

Gangnam Wealth Investment Note

From impulsive investing to a managed strategy

Portfolio rebuilt around AI and infrastructure

Set target returns and redeem automatically

Keep cash on hand to buy during pullbacks

Successful Investing Beyond AI

An investment platform from the Korea Economic Daily

This article appeared on Hankyung Premium 9.

An orthopedic surgeon in his 40s, identified only as A, is a wealthy investor with an aggressive risk appetite. He holds cash inherited from his parents, owns an apartment in Seoul's Gangnam district and runs a stable medical practice. With a spouse and two children — one in college and one in high school — he hopes to retire relatively early on investment gains.

His investing approach was the problem. He often made spur-of-the-moment bets on risky assets such as stocks and Bitcoin. When positions rose, he bought more. When they fell, he held on for extended periods. He also bought a substantial number of small- and mid-cap stocks based solely on recommendations from acquaintances. Although he spread money across many names, he had no clear rules for taking profits or cutting losses. His assets increased, but the lack of systematic management only amplified volatility.

A had about $2.17 million in investable assets. His existing portfolio consisted of roughly $1.45 million in stocks, about $362,000 in time deposits, and another $362,000 in money market funds, or MMFs, and cash. Stocks accounted for a large share of the portfolio, but the number of holdings had become excessive. The strategy was closer to simple buy-and-hold than to a tactical response to market conditions.

Park Kyung-mi, head of Gold PB at Hana Bank's Mok-dong Gold Club, said that in volatile markets like the current one, investors need to realize gains steadily rather than simply hold on based on vague expectations. She recommended selling stocks that had fallen out of favor and rebuilding the portfolio around artificial intelligence and infrastructure.

The domestic equity allocation was reorganized around semiconductors and key export sectors, with purchases made in stages. In the US market, the strategy favored the S&P 500 and Nasdaq 100 over individual stocks to spread exposure across companies benefiting from the AI trade. The portfolio also added some dollar-denominated assets and gold as a hedge against won weakness, inflation and geopolitical risks.

Cash was also maintained strategically. About 20% to 30% of total investable assets would remain in cash-equivalent instruments such as MMFs, allowing the investor to buy at lower prices during market corrections. For A, who wants to retire early, the plan also included reviewing a lifetime variable annuity insurance product and a gifting plan for his children.

A detailed portfolio and execution plan showing how to maintain an aggressive investment style while setting rules for profit-taking, cash reserves and rebalancing is available on Hankyung's investment platform, Hankyung Premium 9.

Cho Mi-hyun, Korea Economic Daily reporter mwise@hankyung.com