Summary
From July 1 to 21, domestic investors' net purchases of US stocks climbed to $2.8788 billion, or roughly 4.2605 trillion won. What this really signals isn't that investors have abandoned the domestic market out of sentiment — it's that they've begun assigning a higher expected return relative to volatility to US AI and semiconductor stocks.
Over the same period, investor deposits — funds earmarked as standby cash for stock purchases — fell by roughly 8 trillion won, from 120.0837 trillion won on July 1 to 112.5190 trillion won on the 20th. As deposits decline and overseas stock settlements rise, domestic brokerages face a dual effect: slowing trading value at home and growing fee income from overseas stock trading.
What Happened
According to the Korea Securities Depository's SEIBro data, net purchases of US stocks from July 1 to 21 exceeded four times June's $632.95 million. Notably, net buying jumped by about $1 billion in just the two days of July 20-21 alone. This suggests the capital flow wasn't a gradual, month-long rebalancing but a rapid response to volatility in the domestic market.
This year's trend hasn't moved in a straight line. Net US stock purchases fell from $4.49863 billion in January to $3.94905 billion in February and $1.69150 billion in March, then flipped to net selling in April and May. June saw a return to net buying, and the pace accelerated further in July. What the market has already priced in is the volatility of the domestic index. What it hasn't yet fully priced in is the lingering impact this renewed overseas acceleration in retail capital will have on securities firms' earnings mix and on KOSPI supply-demand (order flow).
The domestic figures are moving in the opposite direction. Investor deposits fell from the 120 trillion won range in early July to the 112 trillion won range by the 20th. These deposits represent standby cash for buying. As this pool shrinks, the market's capacity for bargain-hunting thins out, and even when the index rebounds, the recovery in trading value tends to lag.
Structural Background
Retail investors' renewed shift toward the US isn't simply because the Nasdaq looks appealing. The domestic market's heavy weighting toward semiconductors means volatility in Samsung Electronics (005930) and SK Hynix (000660) spreads across the entire index. The US market, by contrast, offers a much wider range of choices — AI semiconductors, big tech, index ETFs, even leveraged products. Even when buying semiconductor exposure, investors are effectively choosing a path that tracks US AI infrastructure spending more directly, rather than Korea's memory chip cycle.
The exchange rate acts as both brake and accelerator for this trend. A weaker won raises the cost of buying US stocks, but for investors who already hold dollar assets, it acts as a buffer that protects won-denominated returns. When the won-dollar exchange rate stabilizes, the burden of new purchases eases; conversely, a sharp strengthening of the won compresses the won-denominated returns on dollar assets.
Stock (Ticker) and Sector Ripple Effects
- Kiwoom Securities: A brokerage heavily reliant on retail stock trading. Slowing domestic trading value is a headwind, but rising overseas stock transaction volume and currency exchange demand help partly defend its fee-income mix.
- Mirae Asset Securities: Its competitive edge lies in overseas stock and global ETF platforms. Expanding net buying by Korean retail investors overseas is favorable for brokerage revenue and growth in dollar-denominated deposit assets.
- Samsung Securities: With a strong base in high-net-worth clients and overseas stock services, there's room for this trend to translate into wealth-management-style overseas product sales rather than just plain trading commissions.
- Korea Investment Holdings: Could benefit from increased overseas stock trading through Korea Investment & Securities, but declining domestic trading value and weaker investor sentiment serve as offsetting factors.
- NH Investment & Securities: Its retail and investment-banking businesses move in tandem. Rising overseas trading is a positive, but the benefit is limited if the domestic issuance market and trading value cool simultaneously.
Bullish vs. Bearish Scenarios
The bullish scenario is one where the US AI investment cycle doesn't falter and domestic investors' net buying of overseas stocks continues into August. In that case, securities stocks could reflect the boost from overseas stock fees, currency-exchange spreads, and rising global ETF sales more than the drag from declining domestic trading value.
The bearish scenario splits into two paths. The first is a case where valuation pressure on US tech stocks intensifies, and Korean retail buying turns out to have been chasing the top. The second is a case where the domestic market rebounds sharply, pulling deposits back into the domestic market. In either case, the logic of buying securities stocks across the board simply because of rising overseas stock trading weakens.
Investor Action Points
- Check the SEIBro net-buying data in early August. Whether the pace stays in the $2.8 billion range through the end of July is the first indicator to verify.
- Track Korea Financial Investment Association investor deposit data weekly. If it falls further below the 112 trillion won range, the KOSPI's capacity to rebound will thin out further.
- In securities firms' Q2 and Q3 earnings, separate out overseas stock commissions from domestic brokerage revenue. Looking only at total commission income misses the real direction.
- The won-dollar exchange rate is the next trigger. If the rate falls quickly, new overseas buying becomes easier, but the won-converted returns on existing dollar assets shrink.
Kiwoom Securities: Real-Time Data Snapshot
Kiwoom Securities' most recent closing price is 298,500 won (-5.09% from the previous day), and the signal combining foreign/institutional investor supply-demand (order flow) with news and momentum reads 🟡 Neutral / Wait-and-see. With mixed positive and negative signals, this is a stock to watch closely.
- ▲ Supply-demand (order flow) continuity — Foreign investors net-bought for 4 straight days (+15.7 billion won)
- ▼ Trend alignment — Short- and mid-term downtrend alignment (today -5.1% · 1 week -7.3% · 1 month -4.9%)
- ▼ News flow — 1 positive catalyst vs. 3 negative catalysts — negative catalysts dominate
Recent related news skews negative, with 1 positive catalyst versus 3 negative catalysts.
※ Price and foreign/institutional investor supply-demand (order flow) data are provided by Korea Investment & Securities (KIS) and are current as of publication time.
This content was automatically summarized and analyzed based on the original news article. View original article (Yonhap News Agency, Securities)
