The unanimous institutional buying cluster strongly corroborates the bullish Q2 earnings narrative. With 9 active managers buying and zero sellers, the signal is unusually clean. However, the 45-day 13F reporting lag means these positions were established by June 30 — the stock has likely already repriced post-earnings. Monitor for continued institutional accumulation in Q3 13F filings and watch for any insider buying to confirm the thesis. The raised Q3 guidance ($1.95B-$2.05B revenue, 18.5%-19.5% gross margin) provides a near-term catalyst to watch.
Executive Summary
A cluster of 9 institutional investors accumulated $34.6M in Amkor Technology during Q2 2026, with zero sellers. The buying was dominated by active asset managers, including a new $11.6M position from Banco Santander and a $10.4M addition from Exchange Traded Concepts. This cluster aligns with the company's massive Q2 earnings beat reported 6 days ago (EPS $0.70 vs $0.48 consensus, record revenue of $1.90B) and raised Q3 guidance, suggesting institutions were positioning ahead of or reacting to the strong results driven by AI/HPC and automotive demand.
Key Financial Metrics
Institutional Positions
Net institutional flow: $34.6M
▲ Buyers (9)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Banco Santander | NEW | +100% | $11.6M | $11.6M |
| Exchange Traded Concepts | DOUBLED | +3692.4% | $10.5M | $10.4M |
| Assenagon Asset Management | ADD | +61.7% | $10.7M | $7.2M |
| Mirae Asset Global Investments Co. | ADD | +88.7% | $5.0M | $3.6M |
| Swiss Life Asset Management | ADD | +45.7% | $1.0M | $649.0K |
| Gateway Investment Advisers | ADD | +26.4% | $704.0K | $413.0K |
| Hb Wealth Management | ADD | +26.8% | $657.0K | $386.0K |
| Farther Finance Advisors | DOUBLED | +131.2% | $331.0K | $254.0K |
| Td Waterhouse Canada | DOUBLED | +1539.7% | $102.0K | $99.0K |
Key Facts
- 9 institutional buyers accumulated $34.6M in net new positions during Q2 2026
- 0 institutional sellers — unanimous buying direction
- Banco Santander initiated a new $11.6M position (134.8K shares)
- Exchange Traded Concepts nearly quadrupled its position, adding $10.4M (3.2K → 121.8K shares)
- Assenagon Asset Management added $7.2M (+61.7% shares)
- Cluster follows Amkor's Q2 2026 earnings beat: EPS $0.70 vs $0.48 consensus, record revenue $1.90B, raised Q3 guidance
- All 9 buyers are active asset managers — no passive/index fund rebalancing
- No insider open-market buying corroborates the institutional cluster (confluence score 20/100, divergent)
Financial Impact
9 institutions accumulated $34.6M in new positions during Q2 2026, with total current holdings of $40.6M
Risk Factors
- 13F data has a 45-day reporting lag — positions may have been unwound since quarter-end
- No insider buying to corroborate the institutional cluster (confluence score 20/100, divergent)
- Historical calibration shows score-6 reports on AMKR have only a 40-49% probability of positive T+20 returns
- Semiconductor cyclicality — AI/HPC demand could decelerate
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-AMKR-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 19, 2026 6w ago | Insider Cluster | $50.89 $47.95 | ▼ −5.78% | ▼ −3.83% | — |
Aug 13, 2026 7w ago | Insider Cluster | $57.75 $51.73 | ▼ −10.42% | ▼ −8.68% | — |
Aug 11, 2026 7w ago | Insider Cluster | $54.30 $51.35 | ▼ −5.43% | ▼ −4.37% | — |
Aug 7, 2026 8w ago | Insider Cluster | $55.27 $47.77 | ▼ −13.57% | ▼ −13.17% | — |
Aug 3, 2026 8w ago | Institutional Cluster | $50.84 $47.30 | ▼ −6.96% | ▼ −8.20% | — |
Jul 27, 2026 9w ago | 8-K | $45.69 $48.70 | ▲ +6.59% | ▲ +3.21% | — |
Jul 23, 2026 10w ago | Institutional Cluster | $65.33 $50.86 | ▼ −22.15% | ▼ −25.46% | — |
Jul 20, 2026 10w ago | Insider Cluster | $62.56 $61.30 | ▼ −2.01% | ▼ −6.13% | — |
Jul 20, 2026 10w ago | Insider Cluster | $62.56 $61.30 | ▼ −2.01% | ▼ −6.13% | — |
May 21, 2026 19w ago | 8-K | $65.90 $93.63 | ▲ +42.07% | ▲ +41.74% | — |
US Market Status
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