Korea / Special Situations, Clepsydra Capital

Sanghyun Park

Korea / Special Situations

Korea / Special Sits, Pairs, Index Rebalancing

Clepsydra Capital

Investigate special situations, pairs, and index rebalancing trades in Korea.

Event-Driven

<ul>
<li>KRX plans to list KOSDAQ150 weekly options next month, likely October 27, and is lining up market makers to ensure two-way liquidity from day one.</li>
<li>Early volumes for KOSDAQ150 weeklies will be thin, making MMs cautious, but some may step in despite risks.</li>
<li>Early KOSDAQ150 weeklies could trigger spillover trades, as thin volumes and active MMs lead to IV–spot gaps, price dislocations, and triangular arbitrage opportunities.</li>
</ul>


KRX plans to list KOSDAQ150 weekly options next month, likely October 27, and is lining up market makers to ensure two-way liquidity from day one.
Early volumes for KOSDAQ150 weeklies will be thin, making MMs cautious, but some may step in despite risks.
Early KOSDAQ150 weeklies could trigger spillover trades, as thin volumes and active MMs lead to IV–spot gaps, price dislocations, and triangular arbitrage opportunities.


Potential Spillover Trades from Next Month’s KOSDAQ150 Weeklies Launch

Derivatives and Quantitative Strategist

Gaudenz Schneider

Equity Derivatives

<ul>
<li>September brings heavy index rebalancing activity. <a href="https://www.smartkarma.com/entities/pop-mart-international-group-l" target="_blank" data-smartkarma-citation="entities:29016:1" rel="noopener">Pop Mart (9992 HK)</a> will join both the <a href="https://www.smartkarma.com/entities/hong-kong-hang-seng-index" target="_blank" data-smartkarma-citation="entities:22899:1" rel="noopener">Hang Seng Index (HSI INDEX)</a> and the <a href="https://www.smartkarma.com/entities/hang-seng-china-enterprises-index" target="_blank" data-smartkarma-citation="entities:22900:1" rel="noopener">Hang Seng China Enterprises Index (HSCEI INDEX)</a>.</li>
<li>
The Fed is widely expected to cut rates and Asia-Pac peers (BoJ, RBA, RBI) are also meeting.</li>
<li>
Why Read: Plan ahead and take into account known market events when making investment and trading decision.</li>
</ul>


September brings heavy index rebalancing activity. Pop Mart (9992 HK) will join both the Hang Seng Index (HSI INDEX) and the Hang Seng China Enterprises Index (HSCEI INDEX).

The Fed is widely expected to cut rates and Asia-Pac peers (BoJ, RBA, RBI) are also meeting.

Why Read: Plan ahead and take into account known market events when making investment and trading decision.


Index Changes and Rate Cuts: Key Events in September 2025

Pan-Asia Index Rebalances/ Events/ Delta One, Periscope Analytics

Brian Freitas

Pan-Asia Index Rebalances/ Events/ Delta One

Periscope Analytics

Periscope Analytics focuses on event-driven trades across Asia Pacific and provides comprehensive, timely and systematic coverage of index changes to major Asia Pacific indices in a structured manner.

The analysis includes forecasted inclusions and exclusions to all major Asian indices that have significant amount of tracking assets, including estimates of passive buy/sell flow on the stocks. The service also provides commentary and impact of market consultations, ground rule changes, and other events (IPOs, spin-offs, M&A) that could lead to index changes and passive flow.

Periscope Analytics works with multi-strategy hedge funds, proprietary trading firms, stat arb trading groups and long-only investors that invest and trade in the Asia Pacific region with the data being used to trade index rebalances, avoid pre-positioning and passive flow, and to time entry into and exit from stocks.

Event-Driven Trades Across Asia Pacific

Index Rebalance

<ul>
<li>There are 9 changes for the <a href="https://www.smartkarma.com/entities/kosdaq-150-index" target="_blank" data-smartkarma-citation="entities:31077:1" rel="noopener">KOSDAQ 150 Index (KOSDQ150 INDEX)</a> in June. Most of the adds and all of the deletes were forecast.</li>
<li>The index committee have used their discretion and kept <a href="https://www.smartkarma.com/entities/fadu-inc" target="_blank" data-smartkarma-citation="entities:39896:1" rel="noopener">Fadu (440110 KS)</a> and <a href="https://www.smartkarma.com/entities/snh-inc" target="_blank" data-smartkarma-citation="entities:12212:1" rel="noopener">Snh Inc (051980 KS)</a> out of the index for yet another rebalance - no reason provided.</li>
<li>There's been little movement in the relative performance of the adds/deletes the last few months. The announcement of the changes could see the stocks move over the next few weeks.</li>
</ul>


There are 9 changes for the KOSDAQ 150 Index (KOSDQ150 INDEX) in June. Most of the adds and all of the deletes were forecast.
The index committee have used their discretion and kept Fadu (440110 KS) and Snh Inc (051980 KS) out of the index for yet another rebalance - no reason provided.
There's been little movement in the relative performance of the adds/deletes the last few months. The announcement of the changes could see the stocks move over the next few weeks.


KOSDAQ150 Index Rebalance: 9 Changes as Fadu Ignored Again

<ul>
<li>With the review period for the June rebalance complete, we highlight 11 potential changes for the <a href="https://www.smartkarma.com/entities/kosdaq-150-index" target="_blank" data-smartkarma-citation="entities:31077:1" rel="noopener">KOSDAQ 150 Index (KOSDQ150 INDEX)</a>. </li>
<li>The estimated impact on the potential inclusions ranges from 0.2-7.5 days of ADV while the impact on the potential deletions varies from 0.2-5.8 days of ADV.</li>
<li>The forecast adds have outperformed the forecast deletes over the last 6-7 months with a big move higher in the last month. Trim positions into strength.</li>
</ul>


With the review period for the June rebalance complete, we highlight 11 potential changes for the KOSDAQ 150 Index (KOSDQ150 INDEX). 
The estimated impact on the potential inclusions ranges from 0.2-7.5 days of ADV while the impact on the potential deletions varies from 0.2-5.8 days of ADV.
The forecast adds have outperformed the forecast deletes over the last 6-7 months with a big move higher in the last month. Trim positions into strength.


KOSDAQ150 Index Rebalance Preview: Announcement Around the Corner

<ul>
<li>The resumption of short selling in Korea came at a good time for investors, giving them some additional tools to manage market volatility.</li>
<li>Short interest has increased from 0.17% to 0.23% of market cap for the KOSPI market and from 0.46% to 0.63% for the KOSDAR market.</li>
<li>The KOSPI/KOSDAQ ratio has reverted a bit on profit taking, and the forecast index deletions have recovered a bit but should continue to see increase short interest.</li>
</ul>


The resumption of short selling in Korea came at a good time for investors, giving them some additional tools to manage market volatility.
Short interest has increased from 0.17% to 0.23% of market cap for the KOSPI market and from 0.46% to 0.63% for the KOSDAR market.
The KOSPI/KOSDAQ ratio has reverted a bit on profit taking, and the forecast index deletions have recovered a bit but should continue to see increase short interest.


Korea Short Selling: Biggest Changes in Shorts & Trade Performance

South Korea

KOSDAQ 150 Index is a base index for futures trading to hedge risks in KOSDAQ market. Base period and base index : Jan 4, 2010, 1,000p

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KOSDAQ 150 Index (KOSDQ150 INDEX EQUITY)

Potential Spillover Trades from Next Month’s KOSDAQ150 Weeklies Launch

This post explores potential spot–options spillover and arbitrage trades arising from next month’s KOSDAQ150 weeklies launch.

Sanghyun Park

Index Changes and Rate Cuts: Key Events in September 2025

September packs in index rebalances, quarterly expiries, central bank calls, and Fed drama—keeping markets busy amid a light holiday calendar.

Gaudenz Schneider

KOSDAQ150 Index Rebalance: 9 Changes as Fadu Ignored Again

There are 9 changes as Fadu and Joongang AM have been kept out of the index again. Passive impact varies from 0.2-8.6x ADV. Performance has been...

Brian Freitas

KOSDAQ150 Index Rebalance Preview: Announcement Around the Corner

We highlight 11 potential changes for the index in June. Impact varies from 0.2-7.5x ADV. The forecast adds have outperformed the forecast deletes...

Brian Freitas

Korea Short Selling: Biggest Changes in Shorts & Trade Performance

The resumption of short selling in Korea has come at an opportune time as market volatility spikes. Short notional has increased but is still a...

Brian Freitas

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