The buying cluster is entirely passive/index-driven, offering little stock-specific insight. Given the 45-day reporting lag, these flows are likely already reflected in the stock price. Focus on upcoming earnings or active institutional filings for real conviction signals.
Executive Summary
Four mega-passive institutional investors (BlackRock, State Street, Fidelity, Morgan Stanley) collectively added $260.9M to their ACMR positions in Q3 2025, bringing total disclosed holdings to $418.8M. This is driven by passive index rebalancing rather than active stock-picking, reducing its signal value despite the large dollar amounts.
Key Financial Metrics
Institutional Positions
Net institutional flow: $260.9M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| BlackRock | ADD | +84.8% | $296.9M | $190.6M |
| State Street | ADD | +58.6% | $77.9M | $45.4M |
| Fidelity | ADD | +35.5% | $9.7M | $5.0M |
| Morgan Stanley | ADD | +58.9% | $34.3M | $20.0M |
Key Facts
- 4 passive funds added shares; 0 sellers
- BlackRock added 3.48M shares (+84.8%), worth +$190.6M
- State Street added 735.6K shares (+58.6%), worth +$45.4M
- Fidelity added 65.0K shares (+35.5%), worth +$5.0M
- Morgan Stanley added 325.2K shares (+58.9%), worth +$20.0M
- Total net buyer value increase: $260.9M
Financial Impact
4 passive funds accumulated $418.8M in total positions, a net increase of $260.9M from prior quarter.
Risk Factors
- Passive buying does not indicate fundamental conviction; stock may lack active catalyst.
- Stale data: positions are as of Sep 30, 2025; fund allocation may have already reversed.
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-ACMR-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 22, 2026 5w ago | Insider Cluster | $77.35 $75.80 | ▼ −2.00% | ▼ −3.30% | — |
Aug 8, 2026 7w ago | Institutional Cluster | $79.41 $77.20 | ▼ −2.78% | ▼ −1.87% | — |
Aug 7, 2026 8w ago | 8-K | $83.80 $74.44 | ▼ −11.17% | ▼ −10.77% | — |
Jul 18, 2026 10w ago | Institutional Cluster | $82.52 $85.64 | ▲ +3.78% | ▼ −0.34% | — |
Jun 11, 2026 16w ago | Institutional Cluster | $91.70 $106.04 | ▲ +15.64% | ▲ +13.75% | — |
Jun 6, 2026 16w ago | Insider Cluster | $80.57 $98.52 | ▲ +22.28% | ▲ +20.65% | — |
May 29, 2026 17w ago | 8-K | $82.05 $126.89 | ▲ +54.65% | ▲ +55.95% | — |
May 22, 2026 19w ago | 8-K | $73.35 $95.80 | ▲ +30.61% | ▲ +32.02% | — |
May 15, 2026 19w ago | 8-K | $63.25 $91.18 | ▲ +44.16% | ▲ +42.58% | — |
May 12, 2026 20w ago | 424B5 | $64.75 $91.70 | ▼ −41.62% | ▼ −42.23% | — |
US Market Status
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