The cluster is dominated by a single large seller (Assenagon) whose $7M trim accounts for 86% of total selling. Monitor for any company-specific catalyst or sector headwind that may have driven this reduction. The small buying base lacks conviction from major active managers.
Executive Summary
Q3 2026 13F filings for AAOI reveal a mixed institutional cluster: 3 small buyers (net +$598K) versus 4 sellers (net -$8.1M), dominated by a single large trim from Assenagon Asset Management (-$7.0M). The net selling pressure suggests institutional caution, though the small buying base provides a modest counterweight.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$7.5M
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Farther Finance Advisors | ADD | +46.6% | $104.0K | -$2.0K |
| Td Waterhouse Canada | DOUBLED | +2785.6% | $623.0K | $595.0K |
| Vontobel Holding | ADD | +50.3% | $579.0K | $4.0K |
▼ Sellers (4)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | TRIM | -48.3% | $10.7M | -$7.0M |
| Concurrent Investment Advisors | TRIM | -73.2% | $1.1M | -$916.0K |
| Nisa Investment Advisors | TRIM | -40.4% | $269.0K | -$162.0K |
| Assetmark | NEAR_EXIT | -83.3% | $2.0K | -$2.0K |
Key Facts
- 3 institutional buyers added $598K in net new holdings; 4 sellers reduced by $8.1M
- Largest seller: Assenagon Asset Management trimmed 48.3% of its position, reducing value by $7.0M to $3.7M
- Largest buyer: Td Waterhouse Canada nearly tripled its stake (2,786% increase), adding $595K to reach $623K
- Net institutional flow was negative by approximately $7.5M
Financial Impact
Institutions reduced aggregate holdings by ~$7.5M net: sellers cut $8.1M while buyers added $598K
Risk Factors
- 13F data is 45+ days stale; positions may have changed since quarter-end
- Cluster dominated by one large seller — signal may be idiosyncratic rather than sector-wide
- No activist or high-conviction value fund participation among buyers
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-AAOI-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 6d ago | Institutional Cluster | $68.07 | awaiting T+20 | — | — |
Oct 15, 2026 12d ago | Press Release | $75.57 | awaiting T+20 | — | — |
Sep 10, 2026 6w ago | Insider Cluster | $105.36 $109.64 | ▲ +4.06% | ▲ +2.19% | — |
Sep 10, 2026 6w ago | Insider Cluster | $105.36 $109.64 | ▼ −4.06% | ▼ −1.94% | — |
Aug 12, 2026 10w ago | Insider Cluster | $130.08 $105.36 | ▼ −19.00% | ▼ −17.26% | — |
Aug 1, 2026 12w ago | Institutional Cluster | $110.21 $107.69 | ▼ −2.29% | ▼ −3.52% | — |
Jun 16, 2026 19w ago | 8-K | $167.34 $100.24 | ▼ −40.10% | ▼ −41.42% | — |
Jun 16, 2026 19w ago | Insider Cluster | $167.34 $100.24 | ▼ −40.10% | ▼ −41.42% | — |
Jun 8, 2026 20w ago | Insider Cluster | $162.88 $114.41 | ▲ +29.76% | ▲ +31.20% | — |
Jun 8, 2026 20w ago | Insider Cluster | $162.88 $114.41 | ▼ −29.76% | ▼ −31.20% | — |
US Market Status
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