Context
This follows Have Foreign Investors Returned?, Real Money Flow Framework, Korea Has Liquidity, But Breadth Has Broken, Samsung C&T as a Samsung Electronics proxy and the Korea Semiconductor / HBM Hub.
TL;DR
- Thesis OS added KR Theme ETF Rebalance Flow v1, a monitor for potential mechanical flow from Korea theme ETF periodic rebalances and constituent cap adjustments.
- The first run scanned 31 ETFs, found 30 valid ETFs, processed 291 constituent rows, and produced 69 candidates: 60 redistribution-buy and 9 cap-trim candidates.
- The strongest signal was not nuclear/SMR. It was semiconductor equipment and materials redistribution.
- Leeno Industrial, EO Technics, Soulbrain, DB HiTek, Hanmi Semiconductor, ISC and Wonik IPS screened as the strongest redistribution-buy candidates.
- SK Hynix, Samsung Electronics, Samsung Electro-Mechanics, LS ELECTRIC and Doosan Enerbility screened as cap-trim pressure candidates.
1. What The Monitor Measures
The monitor estimates a cap-redistribution proxy:
ETF-level flow = ETF NAV × target weight delta
Ticker-level flow = sum of ETF-level flows
Flow intensity = estimated flow / 20-day average trading value
It uses Naver mobile ETF surface data, including constituentList and totalNav, plus local prices_daily ADV20. If a constituent is above an assumed cap, the model cuts it back to cap and redistributes the excess to under-cap constituents in proportion to current weights.
This is not official PCF data. Before treating it as a trade signal, investors need issuer PDFs/PCF, index methodology, actual cap rules, and closing-auction evidence.
| Item | Value |
|---|---|
| Date | 2026-06-12 |
| ETFs scanned | 31 |
| Valid ETFs | 30 |
| Constituent rows | 291 |
| Total candidates | 69 |
| Redistribution-buy candidates | 60 |
| Cap-trim candidates | 9 |
| Confidence | medium-low |
2. Top Redistribution-Buy Candidates
| Rank | Name | Signal | Est. flow | Flow/ADV20 | Day return | Main ETFs |
|---|---|---|---|---|---|---|
| 1 | Leeno Industrial | Redistribution buy | KRW 270.4bn | +2.68x | +4.7% | TIGER Semiconductor TOP10, KODEX AI Semiconductor TOP2 Plus |
| 2 | EO Technics | Redistribution buy | KRW 197.8bn | +2.49x | +21.4% | TIGER Semiconductor TOP10 |
| 3 | Soulbrain | Redistribution buy | KRW 69.4bn | +2.44x | +24.4% | TIGER Semiconductor TOP10 |
| 4 | DB HiTek | Redistribution buy | KRW 264.3bn | +2.02x | +12.3% | TIGER Semiconductor TOP10, KODEX AI Semiconductor TOP2 Plus |
| 5 | Hanmi Semiconductor | Redistribution buy | KRW 721.0bn | +1.81x | +24.1% | TIGER Semiconductor TOP10, KODEX AI Semiconductor TOP2 Plus |
| 6 | ISC | Redistribution buy | KRW 92.0bn | +1.76x | +20.7% | TIGER Semiconductor TOP10, SOL AI Semiconductor TOP2 Plus |
| 7 | Wonik IPS | Redistribution buy | KRW 211.1bn | +1.63x | +30.0% | TIGER Semiconductor TOP10 |
| 8 | HPSP | Redistribution buy | KRW 143.7bn | +0.66x | +30.0% | TIGER Semiconductor TOP10, KODEX AI Semiconductor TOP2 Plus |
The important field is not only absolute flow. It is flow intensity versus liquidity. Leeno, EO Technics, Soulbrain, ISC and Wonik IPS screen as names where estimated ETF redistribution may be large relative to normal trading value.
3. Cap-Trim Watch
| Rank | Name | Signal | Est. flow | Flow/ADV20 | Day return |
|---|---|---|---|---|---|
| 1 | SK Hynix | Cap trim | -KRW 1.76tn | -0.15x | +2.3% |
| 2 | Samsung Electronics | Cap trim | -KRW 49.4bn | -0.00x | +7.9% |
| 3 | Samsung Electro-Mechanics | Cap trim | -KRW 514.9bn | -0.21x | -5.0% |
| 4 | LS ELECTRIC | Cap trim | -KRW 47.0bn | -0.15x | -3.0% |
| 5 | HD Hyundai Heavy Industries | Cap trim | -KRW 21.8bn | -0.06x | +0.6% |
| 6 | Hanwha Ocean | Cap trim | -KRW 7.8bn | -0.04x | +7.8% |
| 7 | Doosan Enerbility | Cap trim | -KRW 26.5bn | -0.07x | +5.1% |
Cap-trim does not mean short. Large names can absorb technical ETF selling if foreign or institutional demand is strong. The more useful interpretation is: do not chase cap-trim names unless price action proves real demand is absorbing the mechanical supply.
4. Nuclear / SMR Was Watch, Not The Main Signal
Nuclear names appeared in Priority Watch, but the signal strength was lower than semicap redistribution.
| Name | Signal | Est. flow | Flow/ADV20 | Day return |
|---|---|---|---|---|
| KEPCO Engineering | Redistribution buy | KRW 2.85bn | +0.13x | +30.0% |
| Doosan Enerbility | Cap trim | -KRW 26.5bn | -0.07x | +5.1% |
| Hyundai Engineering & Construction | Redistribution buy | KRW 8.75bn | +0.06x | +28.4% |
| BHI | Redistribution buy | KRW 1.57bn | +0.06x | +30.0% |
| Woori Technology | Redistribution buy | KRW 2.91bn | +0.04x | +30.0% |
5. Trade Discipline
Treat this as an event screen, not a final signal.
| Step | Required confirmation |
|---|---|
| 1 | Check issuer ETF PDF/PCF and index methodology |
| 2 | Confirm closing-auction and end-of-day volume |
| 3 | Check T+1/T+3 relative strength |
| 4 | Confirm program, foreign or institutional flow alignment |
| 5 | Upgrade only the strongest names to watchlist or small event trade |
Final View
The first KR Theme ETF Rebalance Flow run says the strongest June 12 passive-flow setup was semiconductor second-line redistribution, not broad Korea beta and not nuclear/SMR as the primary signal.
The signal is useful because it quantifies where ETF mechanics may redirect weight after megacap concentration. It remains a medium-low confidence proxy until official PCF/PDF and actual close-auction flow confirm it.
Evidence Ledger
| Item | Source | Detail |
|---|---|---|
| Monitor | Thesis OS / Alpha | KR Theme ETF Rebalance Flow v1 |
| Local report | Vault 2026-06-12_theme_etf_rebalance_flow.md | 31 ETFs scanned, 30 valid, 69 candidates |
| External Signal Judge input | Vault candidate file | Candidate score, flow, intensity and confidence |
| Data | Naver ETF surface + local DB | constituentList, totalNav, prices_daily ADV20 |
Caveat
This is not investment advice and not a confirmed PCF-based trade instruction. It is a cap-redistribution proxy that requires issuer confirmation and post-event validation.