Daily Brief Industrials: Sejin Heavy Industries Co Ltd, BayCurrent Consulting , Beijing Originwater Technology Co,Ltd. and more

In today’s briefing:

Another Passive Flow Trading Target Identified: Sejin Heavy in the Dec Shipbuilding ETF Rebal
The 2025 Japan September-End Rebal and Dividend Trade
Quiddity Leaderboard ChiNext & ChiNext 50 Dec25: Multiple Changes to Expectations; New Ideas

Another Passive Flow Trading Target Identified: Sejin Heavy in the Dec Shipbuilding ETF Rebal

HHI–Mipo merger overlaps Dec review: Mipo dropped Nov 26, desk holds cash, rebal Dec 12, new HHI shares list Dec 15 but capped at 10%.
No ad-hoc replacement for Mipo Nov 26; Dec review will add a new name, likely Sejin Heavy (075580 KS), with no other significant flows flagged.
Sejin Heavy’s recent post-rally volume cools; passive inflow ~1.5x DTV may trigger visible price action, with potential front-running 1–2 days ahead of Dec 12 ETF rebal.

Every year it’s the same trade. But sometimes it is not. This year it is Friday and Monday. Or not. Historically, the day before ex-date and ex-date see outright performance.
The month-end and quarter-end bring big flows, or not, depending on how things have gone. This year they have gone well for equities, so odds are flows are smaller.
Over the past 10 years or so, the two-day return on the March trade is pretty good. The September trade appears to be more mixed.

The ChiNext index represents the performance of the 100 largest and most liquid A-share stocks listed on the ChiNext Market of the Shenzhen Stock Exchange.
The ChiNext 50 index is a subset of the ChiNext Index and it consists of the top 50 names in the ChiNext index with the highest daily average turnover.
We see 7 changes for the ChiNext index and 5 changes for the ChiNext 50 index in the next index rebal event.

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