Semiconductor Optimism and U.S.–Iran Ceasefire Hopes Push KOSPI Back Above the 120-Day Moving Average
Why the Market Was Strong Despite Concentrated Buying—and Three Key Signals to Watch Next
The Korean stock market staged a powerful rebound today, driven by two major catalysts: renewed optimism surrounding the semiconductor sector and growing expectations that tensions between the United States and Iran may ease through negotiations.
However, despite the strong rise in the index, the number of advancing stocks remained relatively limited. This suggests that today's rally should not be interpreted as a broad-based market recovery, but rather as a selective rally fueled by concentrated capital flows.
In this report, we'll examine the drivers behind today's gains, analyze the market's underlying capital flows, review the technical signals, and discuss the key factors investors should monitor going forward.
Market Summary
Today's market performance can be summarized as follows:
KOSPI surged approximately 3.5%, reclaiming its 120-day moving average.
KOSDAQ recovered from sharp intraday losses to finish modestly higher.
Foreign investors bought across multiple sectors, although electronics—particularly semiconductors—received the largest inflows.
Samsung Electronics and SK Hynix accounted for a significant portion of the index's gains.
Robotics stocks outperformed within the KOSDAQ.
Japan and Taiwan—two markets that had fallen sharply last week alongside Korean semiconductor stocks—also rebounded strongly.
The synchronized rebound across Korea, Japan, and Taiwan suggests that today's move reflects improving sentiment toward the global semiconductor cycle, rather than company-specific developments.
Catalyst #1: Expectations for U.S.–Iran Negotiations
One of today's biggest catalysts was media reports suggesting that former President Donald Trump is considering a temporary 10-day ceasefire proposal.
What makes this particularly meaningful is the timing.
The reports surfaced shortly after an incident involving casualties among U.S. military personnel. Despite that escalation, negotiations remain under discussion.
Markets interpreted this as evidence that:
neither side appears eager to move toward full-scale military conflict,
geopolitical risks may gradually ease,
oil prices could stabilize,
and overall risk appetite may improve.
Lower geopolitical risk generally supports equities by reducing concerns about energy prices, inflation, and monetary tightening.
That said, reports also indicate that contingency plans for broader military action remain in place if negotiations fail. Investors should therefore avoid assuming that geopolitical risks have completely disappeared.
Catalyst #2: Improving Semiconductor Fundamentals
1. Korea's Export Data Continues to Strengthen
According to preliminary trade data covering July 1–20:
Korea's total exports increased approximately 52% year-over-year.
Semiconductor exports surged approximately 180% year-over-year.
The key takeaway is not simply the magnitude of the increase—but its acceleration.
Second-quarter earnings were already expected to be solid.
Now, early third-quarter trade data suggests earnings momentum may improve even further.
This supports the view that the recent correction in semiconductor stocks was driven primarily by positioning, profit-taking, and short-term supply concerns—not deteriorating fundamentals.
2. Global Capital Continues to Flow Into Korean Semiconductor Exposure
International investors have continued increasing exposure to Korean equities.
Recent developments include:
BlackRock's Korea ETF attracting one of its largest weekly inflows on record.
Significant inflows into global memory semiconductor ETFs.
Korean equity ETF EWY recording record inflows for two consecutive trading sessions.
Importantly, this does not necessarily indicate broad enthusiasm for the entire Korean equity market.
Instead, many investors appear to be using Korean ETFs as an efficient vehicle for gaining exposure to SK Hynix and Samsung Electronics, whose U.S.-listed ADRs continue to trade at meaningful premiums.
In other words, investors are choosing the ETF because it provides similar semiconductor exposure at a more attractive valuation.
3. Policy Expectations Also Improved
Additional optimism came from comments suggesting that Korean authorities may introduce further measures related to leveraged ETFs and capital market reforms.
Although details remain limited, expectations of additional policy support helped improve investor sentiment.
4. Global Investment Banks Are Becoming More Constructive
Several major global investment banks—including Goldman Sachs, JPMorgan, and Morgan Stanley—have argued that recent semiconductor weakness reflects technical positioning rather than deteriorating earnings prospects.
Their common message is straightforward:
The correction has been driven primarily by capital flows—not by weakening fundamentals.
Evercore remains more cautious, warning that another 10–15% downside cannot be ruled out over the coming weeks.
Nevertheless, the overall tone among major institutions has become noticeably more constructive.
Technical Analysis
KOSPI: Why Reclaiming the 120-Day Moving Average Matters
Today's recovery pushed the KOSPI back above its 120-day moving average, an important technical level.
History shows that when major moving averages fail to recover quickly, downside momentum can accelerate significantly.
That does not mean today's move confirms a new bull market.
Instead, investors should focus on whether the KOSPI can successfully hold above this level over the coming sessions.
The longer prices consolidate above key support, the stronger the case becomes for a sustainable trend reversal.
KOSDAQ: A Major Long-Term Support Level Held
The KOSDAQ briefly fell to a 15-year long-term trendline before rebounding.
This support level has historically marked important turning points.
Holding above it does not guarantee a new uptrend—but it suggests long-term buyers are beginning to re-enter the market.
For the KOSDAQ to build sustainable momentum, however, stronger leadership will eventually need to emerge beyond robotics, potentially from biotechnology, batteries, or other large-cap growth sectors.
What Capital Flows Reveal
Today's capital flows reveal several important signals beneath the surface.
1. Program Buying Was Broad-Based
Foreign investors increased exposure through non-arbitrage program trading, meaning they purchased baskets of Korean equities rather than targeting only a handful of individual stocks.
This suggests renewed confidence in the broader Korean market—not merely selective buying of semiconductor leaders.
2. Margin Debt Has Fallen Sharply
Margin balances have declined by more than 10% within roughly two weeks.
This reflects significant forced selling and liquidation among retail investors.
Historically, sharp declines in margin debt often coincide with late-stage panic selling and may signal that an important portion of speculative excess has already been removed.
While this alone does not guarantee a market bottom, it is certainly a constructive development.
3. Cash Waiting on the Sidelines Remains Limited
Investor cash balances have remained relatively unchanged.
This indicates today's rebound was not driven by large amounts of new money entering the market.
Instead, existing capital appears to be rotating from defensive positions into semiconductor leaders.
Stock-Level Observations
Samsung Electronics & SK Hynix
These two companies accounted for much of today's index recovery.
Interestingly, foreign investors bought Samsung Electronics while modestly reducing exposure to SK Hynix.
At this stage, this appears more consistent with short-term portfolio rebalancing than a broader shift away from SK Hynix.
Energy Stocks Failed to Extend Gains
Despite higher oil prices, refinery stocks showed limited upside.
This suggests capital may already be rotating away from geopolitical trades and back toward growth sectors.
Former Market Leaders Are Losing Momentum
Stocks that had previously outperformed during the correction began weakening today.
This may indicate investors are reallocating capital toward semiconductors and other high-conviction opportunities.
Three Key Things to Watch Next
1. Performance of Global Hyperscalers
Upcoming earnings from:
Alphabet
Microsoft
Amazon
Meta
will be critical.
Their capital expenditure guidance will directly influence sentiment toward AI infrastructure and semiconductor demand.
2. Whether Market Volatility Begins to Normalize
Recent trading has been extraordinarily volatile, with the KOSPI frequently moving more than 3% in either direction.
A healthier bull market would require:
smaller daily swings,
higher consistency,
and more stable institutional buying.
3. Whether Leadership Expands Beyond Semiconductors
Today's rally remained highly concentrated.
A sustainable recovery will likely require broader participation from:
KOSDAQ growth sectors,
biotechnology,
industrial automation,
robotics,
and other technology industries.
Final Thoughts
Today's rebound was supported by several meaningful developments:
easing geopolitical concerns,
accelerating semiconductor exports,
improving earnings expectations,
record ETF inflows,
constructive institutional research,
and stronger foreign buying.
Technically, the KOSPI reclaimed its 120-day moving average, while the KOSDAQ successfully defended a major long-term support level.
These are encouraging signs.
However, the rally remains heavily concentrated around semiconductors.
The real test will be whether this strength broadens across the broader Korean equity market.
For now, investors should closely monitor:
global hyperscaler earnings,
foreign capital flows,
market volatility,
and whether leadership expands beyond Samsung Electronics and SK Hynix.
Those factors will likely determine whether today's rebound marks the beginning of a sustainable recovery—or merely another short-term bounce.
Disclaimer: This article reflects the author's market analysis and opinions and should not be considered investment advice. Investors should conduct their own research before making investment decisions.
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