Updated Jul 28, 2026
/Dodgers Sign Award-Winning Left-Handed Starter After Private Workout/Kospi-Nasdaq 100 60-day correlation climbs to highest since 2021, Rayliant data shows/Amazon Fire TV Stick 4K Max and 4K Plus drop to all-time lows at Best Buy and Target/New York AG warns CLARITY Act could weaken state crypto enforcement/Kalshi traders expect Kevin Warsh to cite supply shock at this week's Fed press conference/Bitmine adds nearly 10,000 ETH in a week, total holdings reach 5.79 million/Dodgers Sign Award-Winning Left-Handed Starter After Private Workout/Kospi-Nasdaq 100 60-day correlation climbs to highest since 2021, Rayliant data shows/Amazon Fire TV Stick 4K Max and 4K Plus drop to all-time lows at Best Buy and Target/New York AG warns CLARITY Act could weaken state crypto enforcement/Kalshi traders expect Kevin Warsh to cite supply shock at this week's Fed press conference/Bitmine adds nearly 10,000 ETH in a week, total holdings reach 5.79 million
NewsSOS
← NewswireMarkets

Kospi-Nasdaq 100 60-day correlation climbs to highest since 2021, Rayliant data shows

SEOUL, July 28. The 60-day correlation between South Korea's Kospi and the Nasdaq 100 recently climbed to about 0.50, its highest level since 2021, according to data provided by Rayliant. The figure reflects a tightening between Wall Street's technology-heavy benchmark and Seoul's broad equity index.

By Mateo Fuentes2 min read
Share

SEOUL, July 28. The 60-day correlation between South Korea's Kospi and the Nasdaq 100 recently climbed to about 0.50, its highest level since 2021, according to data provided by Rayliant. The figure reflects a tightening between Wall Street's technology-heavy benchmark and Seoul's broad equity index.

The Rayliant figures

Correlation runs from negative one to positive one. At negative one, two assets move in exact opposition; at positive one, they move in lockstep. At approximately 0.50, the Kospi and Nasdaq 100 sit in moderate positive territory on a 60-day look-back, meaning the two indexes have tended to move in the same direction over that period, the data shows. The last time the pair reached this level was 2021, Rayliant reported.

The 60-day window smooths daily noise. A reading of this magnitude sustained across two months reflects structural co-movement, not a handful of correlated sessions pulling the figure higher.

Consequences for cross-regional portfolios

Investors who hold both Korean equities and U.S. large-cap technology exposure assume less diversification benefit when the two markets move in closer alignment. At 0.50, the mutual offset each position provides the other is narrower than at any point since 2021, the Rayliant data shows.

The correlation figure alone does not identify what is driving the alignment. Rayliant provided the data. The Nasdaq 100 tracks 100 of the largest non-financial companies listed on the Nasdaq. The Kospi is South Korea's primary equity benchmark, covering companies listed on the Korea Exchange.

Related reading

Keep reading

All bulletins →
MarketsJuly 27, 2026

Morgan Stanley lifts July ISM Manufacturing PMI forecast to 53.8

NEW YORK, July 27. Morgan Stanley has raised its July ISM Manufacturing PMI forecast to 53.8 from 53.3, pointing to stronger factory activity in Texas, increased production, and solid new orders as the basis for the revision. The upgrade signals that U.S. manufacturing is trackin

2 min read
MarketsJuly 25, 2026

NEM declares $0.26 quarterly cash dividend, payable Sept. 28, 2026

NEM has declared a quarterly cash dividend of $0.26 per share, payable Sept. 28, 2026. The ex-dividend date and record date are both

2 min read
MarketsJuly 25, 2026

FibroBiologics faces Nasdaq delisting after shares close below $1 for 30 consecutive business days

HOUSTON, July 24. Thirty consecutive business days with closing bid prices below $1.00 per share triggered a Nasdaq Staff Determination letter to FibroBiologics, Inc. (Nasdaq: FBLG) on July

2 min read

Key takeaways

Frequently asked

How high did the Kospi-Nasdaq 100 correlation climb?

The 60-day correlation recently rose to about 0.50, its highest level since 2021 according to Rayliant data.

What does a correlation of 0.50 mean?

Correlation runs from negative one to positive one, and at about 0.50 the two indexes are in moderate positive territory, meaning they have tended to move in the same direction over the 60-day look-back.

Why does this matter for investors?

Investors holding both Korean equities and U.S. large-cap technology assume less diversification benefit, since the mutual offset each position provides is narrower than at any point since 2021.

What are the Nasdaq 100 and the Kospi?

The Nasdaq 100 tracks 100 of the largest non-financial companies listed on the Nasdaq, while the Kospi is South Korea's primary equity benchmark covering companies listed on the Korea Exchange.

Does the data explain what is driving the alignment?

No, the correlation figure alone does not identify what is driving the alignment; Rayliant only provided the data.