KOSDAQ Premium 70-Name League: 30 Core Candidates Passive Money Will Watch First

Wed, 17 Jun 2026 22:25:00 +0900

Connected context
This is a follow-up to The Complete KOSDAQ Guide, National Growth Fund and KOSDAQ Smart Money, Why Is KOSDAQ Falling If Foreigners Are Buying?, and Korea Foreign-Investor Playbook: KOSPI 168, KOSDAQ 355. Those posts covered KOSDAQ market reform, policy capital, foreign flow and institutional real money. This post narrows the next question: if the premium 70-name league becomes a passive-flow event, which KOSDAQ stocks should investors watch first?

TL;DR

The official 70-name list has not been published. This is not a confirmed inclusion list. The framework combines the reported direction of a tighter 70-company premium league, the existing KRX KOSDAQ Global Segment criteria, and Thesis OS data on market cap, trading value, foreign ownership and current KOSDAQ Global inclusion.

Thirty names look hard to exclude from a 70-name premium league. The core group includes Alteogen, EcoPro BM, EcoPro, Rainbow Robotics, major semiconductor equipment/materials/substrate names, biotech platforms, medical-aesthetic compounders and entertainment leaders.
The screen is not just market cap. The useful filter is market cap plus turnover plus KOSDAQ Global status plus likely fundamental and governance eligibility.
Event alpha may sit less in names already inside KOSDAQ Global and more in large, liquid and representative names that are not yet in KOSDAQ Global: Rainbow Robotics, EO Technics, Jeju Semiconductor, Hana Micron, Dongjin Semichem, ISC, Eugene Technology and Seojin System.

If the KOSDAQ premium 70-name league becomes an index and ETF event, the market is likely to price 70 institutionally ownable KOSDAQ leaders, not the whole KOSDAQ market.

1. Why 70 matters

Seoul Economic Daily reported that Korea’s planned KOSDAQ premium league is being discussed as a tighter group of 70 companies, down from earlier ranges such as 80 to 170 or fewer than 100. Seoul Economic Daily

Seventy names would represent roughly the top 4% of about 1,800 KOSDAQ listings. That compression creates two effects. First, the premium league becomes a possible benchmark universe for pensions, institutions and ETFs. Second, inclusion and exclusion start to matter. A 170-name list is a broad quality list. A 70-name list is a first division.

The constraint is clear: there is still no official list and no final methodology. The job now is to prepare a candidate map before the official list arrives.

2. Existing KRX Global criteria are the starting point

The closest existing framework is the KRX KOSDAQ Global Segment. KRX uses market evaluation, operating performance, research performance and governance transparency. The standard route includes KRW 500 billion market cap or top 7% status, plus operating profit of at least KRW 30 billion or revenue of at least KRW 300 billion. Research-driven biotech companies have separate criteria. KRX also requires governance grades of B or better from at least two evaluators. KRX KOSDAQ Global rules

Filter	Investor meaning
Market cap	Representative size for passive products
Trading value	Enough liquidity for rebalancing
Earnings or revenue	The league cannot be only a theme basket
Current KOSDAQ Global inclusion	Prior institutional validation
Governance	Minimum pension and institutional acceptability
Sector representation	Semis, biotech, batteries, robotics and entertainment define KOSDAQ

3. The 30 core candidates

Rank	Company	Code	Segment	Inclusion logic
1	Alteogen	196170	Biotech platform	Top KOSDAQ market cap, KOSDAQ Global, technology-transfer platform
2	EcoPro BM	247540	Battery materials	Key battery-materials leader with dominant size and liquidity
3	EcoPro	086520	Battery holding company	Representative battery holding/materials beta
4	Rainbow Robotics	277810	Robotics	Korea robotics leader and symbolic premium-league candidate
5	Jusung Engineering	036930	Semiconductor equipment	AI semiconductor equipment leader with strong liquidity
6	Wonik IPS	240810	Semiconductor equipment	KOSDAQ Global, equipment representative, earnings recovery
7	Leeno Industrial	058470	Test socket	Quality compounder with high ROE and margins
8	HPSP	403870	Semiconductor equipment	High-pressure hydrogen annealing leader
9	EO Technics	039030	Semiconductor equipment	HBM and laser-equipment representative
10	Simmtech	222800	PCB/SOCAMM	Key SOCAMM and substrate theme name
11	PSK	319660	Semiconductor equipment	Representative equipment-cycle earnings name
12	Jeju Semiconductor	080220	LPDDR/memory	LPDDR theme leader with heavy turnover
13	Hana Micron	067310	OSAT	Back-end memory beta and earnings recovery
14	Dongjin Semichem	005290	Materials	Large materials name with institutional access
15	TES	095610	Equipment	KOSDAQ Global and improving equipment-cycle name
16	Eugene Technology	084370	Equipment	DRAM/HBM capex beneficiary
17	ISC	095340	Test socket	AI memory test infrastructure
18	Soulbrain	357780	Materials	KOSDAQ Global quality materials leader
19	TCK	064760	Consumables	KOSDAQ Global, SiC ring and fab recovery
20	Park Systems	140860	Metrology	High-margin precision-equipment leader
21	LigaChem Biosciences	141080	ADC/biotech	KOSDAQ Global biotech platform
22	ABL Bio	298380	Biotech platform	KOSDAQ Global biotech growth name
23	PharmaResearch	214450	Medical aesthetics	KOSDAQ Global, strong growth and margins
24	Hugel	145020	Medical aesthetics	Large healthcare earnings name
25	Classys	214150	Medical devices	Quality aesthetic-device compounder
26	ST Pharm	237690	CDMO/RNA	KOSDAQ Global CDMO/RNA representative
27	Sam Chun Dang Pharm	000250	Pharma/biotech	Large pipeline and biosimilar option
28	Seojin System	178320	AI infrastructure	ESS, telecom and server infrastructure platform
29	JYP Ent.	035900	Entertainment	KOSDAQ Global entertainment earnings name
30	SM Entertainment	041510	Entertainment	Large KOSDAQ entertainment name

4. Where event alpha may appear

If this becomes a passive product, the more interesting set is not-yet-KOSDAQ-Global names that could enter the new premium basket.

Candidate	Why it matters	What to check
Rainbow Robotics	Symbolic robotics leader	Whether growth representation offsets near-term earnings filters
EO Technics	HBM/laser equipment	Whether the new rules differ from KOSDAQ Global
Jeju Semiconductor	LPDDR leader with high turnover	Earnings durability and crowding
Hana Micron	OSAT and memory back-end exposure	Earnings recovery and foreign-flow continuity
Dongjin Semichem	Large semiconductor-materials name	Stability and governance eligibility
ISC	AI memory test-socket exposure	Valuation pressure after re-rating
Eugene Technology	DRAM/HBM equipment cycle	Order and earnings visibility
Seojin System	ESS, telecom and server infrastructure	Whether it is recognized as AI infrastructure

5. Borderline and excluded names

Group	View
HLB, Kolon TissueGene, Peptron, D&D Pharmatech	Large market caps, but more dependent on clinical or event outcomes. They may enter the full 70 if growth is weighted heavily.
Pearl Abyss	Size and brand recognition are enough, but trailing losses and single-IP event risk keep it out of the core 30.
FADU	Representative AI storage story, but data quality, valuation and flow volatility keep it in the event bucket.
Low-liquidity theme stocks	They can react early, but turnover and governance are bottlenecks for passive inclusion.

6. Strategy

Step	What to check	Interpretation
1	Official list	Confirm actual inclusion
2	Index methodology	Market-cap weighting, equal weighting, cap rule, rebalance timing
3	Linked ETFs/funds	Actual passive-buying capacity
4	Post-inclusion flow	Foreign, investment-trust, pension and program-buying persistence

Before the official list, this is a candidate map, not a confirmed trade. The true event is the list plus index methodology plus linked products.

Final view

The KOSDAQ premium 70-name league is not a “buy the whole KOSDAQ” story. It is a policy event that can compress attention into KOSDAQ names that institutions and passive products can actually own. The current core 30 centers on semis, biotech, batteries, robotics, AI infrastructure and entertainment. The first event-alpha watchlist is narrower: Rainbow Robotics, EO Technics, Jeju Semiconductor, Hana Micron, Dongjin Semichem, ISC, Eugene Technology and Seojin System.

Evidence Ledger

Item	Evidence
Reported 70-name premium league	Seoul Economic Daily report, June 17, 2026. Official list not yet public
Existing KOSDAQ Global criteria	KRX KOSDAQ Global Segment rules
KOSDAQ Global current inclusion	KRX KOSDAQ Global constituent API, checked June 17, 2026
Price and foreign-ownership baseline	Thesis OS local DB, June 17, 2026
Feature-store baseline	Thesis OS feature store, June 16, 2026
Key limitation	[Blocked] Official 70-name list, final index methodology, cap rule and linked ETF AUM are not yet confirmed

KOSDAQ Premium Segment on Korea Invest Insights