While You Are Watching Iran, South Korea’s Stock Market Is Going Absolutely Berserk

South Korea’s KOSPI delivered one of the strongest runs among major equity markets over the past year, yet almost no one outside Asia noticed because the news cycle was consumed by a war in the Middle East. That distraction created an unusual setup for a 3x leveraged ETF.

Direxion Daily MSCI South Korea Bull 3X Shares (NYSEARCA:KORU) is up 155% year-to-date and ~1,165% over the past twelve months. Those numbers reflect a confluence of corporate governance reform in Seoul, a semiconductor supercycle, and geopolitical panic that briefly made Korean equities cheaper before the market snapped back violently.

Geopolitical Panic Created a Buying Opportunity

The U.S.-Iran conflict, which escalated in late February 2026, initially hammered the KOSPI. In the two trading days after the conflict began, the KOSPI fell over 18%, posting its worst-ever daily selloff. South Korea imports 70% of its crude and 30% of its gas from the Middle East, all transiting through the Strait of Hormuz, making it acutely exposed to energy disruptions. The market sold off hard.

But the panic turned out to be a buying opportunity. As ceasefire talks emerged and Trump signaled the war could end soon, Asian markets surged. The KOSPI rebounded sharply, and KORU, which amplifies every daily move in the MSCI South Korea index by three, went with it. Over the past week alone, KORU gained 49%. Over the past month, it has been up 47%.

The underlying story predates the Iran conflict. Since President Lee Jae Myung took office in June 2025, Seoul has pursued a sweeping corporate governance overhaul. This was aimed at eliminating the so-called “Korea discount,” the gap between Korean conglomerate valuations and their global peers. The government moved to ban duplicate listings by holding companies and their subsidiaries. It is a practice estimated to account for 20% of South Korea’s total market capitalization. Samsung and SK Hynix, the two heavyweights of the MSCI South Korea index, have been the primary beneficiaries. Semiconductor memory prices have also climbed on record supply shortfalls in both DRAM and NAND chips.

How KORU Works

KORU seeks to deliver 300% of the daily performance of the MSCI Korea 25/50 Index by holding ~52% of its assets in the iShares MSCI South Korea ETF (NYSE:EWY), with the remainder in swap agreements that create the leveraged exposure. The fund has ~$1.1 billion in net assets and carries a 1.32% expense ratio. It has been around since April 2013.

The return engine is straightforward: Korean equity appreciation, amplified daily. When Samsung climbs 13% in a session, KORU captures something close to 39% of that move in a single day. The fund holds no bonds, collects no option premium, and engages in no credit strategies. It is a pure directional bet on Korean equities, magnified. The dividend yield is less than 1%.

The Five-Year Reality Check

The one-year return looks extraordinary, but the five-year picture tells a different story. Over five years, KORU is up just 8%, meaning investors who held through the full cycle, including the brutal 2022-2024 period when Korean equities lagged, earned almost nothing despite the leverage. This is the core paradox of daily-reset leveraged ETFs: they compound magnificently in trending markets and decay quietly in choppy ones.

Volatility decay is the structural drag every KORU holder must understand. Because the fund resets its 3x exposure daily, it must mechanically sell into falling markets and buy into rising ones. In volatile environments, this daily rebalancing erodes returns even when the underlying index ends flat over weeks. The Iran-driven swings in March 2026 illustrated this: the KOSPI fell 18% and rebounded sharply, but KORU holders who entered at the wrong moment found the round-trip far more punishing than the underlying index suggested.

Three Tradeoffs Before Buying KORU

1. Volatility decay versus directional reward: KORU works beautifully in clean, sustained uptrends. The past year’s ~1,165% return is real, but it required holding through a 20%+ drawdown in early March without flinching. Most investors cannot do that psychologically, and those who sold during the Iran panic locked in losses right before the recovery.
2. Energy and geopolitical sensitivity: South Korea’s economy runs on imported energy. A prolonged Strait of Hormuz disruption would pressure corporate margins, weaken the Korean won, and trigger capital outflows. KORU amplifies all of that downside by three.
3. The five-year reality: KORU’s five-year return is roughly 8%, a figure reflecting years of sideways grind eating away at the leverage premium. The ten-year return of ~109% trails what a patient holder of unleveraged global equity funds would have earned with far less stress.

Investors who have held KORU through the full cycle have seen the fund reward patience during sustained uptrends and punish hesitation during volatile ones.