The buying cluster is broad but modest in scale relative to GLW's market cap. The single large trim by TD Waterhouse Canada ($58.6M) dominates the net flow. Monitor next 13F for whether the buying conviction persists or reverses. No immediate catalyst — 13F data is 45+ days stale.
Executive Summary
A cluster of 5 asset managers accumulated $26.7M in GLW during Q3 2026, led by Assenagon's $24.9M add and two doublings (Mather Group, Concurrent Investment Advisors), while TD Waterhouse Canada trimmed $58.6M. The net $31.9M outflow from the tracked group is driven by a single large seller, but the breadth of buying (5 buyers vs 1 seller) suggests selective conviction among active managers.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$31.9M
▲ Buyers (5)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | ADD | +92.4% | $182.1M | $24.9M |
| Mather Group | DOUBLED | +147.5% | $897.0K | $295.0K |
| Concurrent Investment Advisors | DOUBLED | +113.4% | $15.9M | $3.5M |
| Assetmark | ADD | +62.3% | $20.3M | -$482.0K |
| Banque Pictet & Cie | ADD | +33.3% | $6.2M | -$1.5M |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Td Waterhouse Canada | TRIM | -46.1% | $96.4M | -$58.6M |
Key Facts
- 5 tracked institutions added $26.7M in GLW positions during Q3 2026
- Assenagon Asset Management added $24.9M (+92.4% shares), the largest buyer
- Mather Group and Concurrent Investment Advisors both doubled their positions
- TD Waterhouse Canada trimmed $58.6M (-46.1% shares), the sole seller
- Net tracked flow was -$31.9M due to the large single seller outweighing aggregate buying
Financial Impact
5 buyers accumulated $26.7M in new GLW positions; 1 seller reduced holdings by $58.6M; net tracked outflow of $31.9M
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound since quarter-end
- Single large seller ($58.6M) outweighs aggregate buying, suggesting mixed institutional sentiment
- All tracked funds are asset managers, not activist or event-driven — signal is moderate conviction, not a catalyst
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-GLW-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 5d ago | Institutional Cluster | $123.99 $123.69 | ▼ −0.24% | ▲ +0.28% | — |
Sep 11, 2026 6w ago | 8-K / 424B5 | $143.60 $143.57 | ▲ +0.02% | ▼ −0.44% | — |
Sep 8, 2026 6w ago | Insider Cluster | $168.46 $163.12 | ▼ −3.17% | ▼ −2.57% | — |
Aug 14, 2026 10w ago | Institutional Cluster | $165.99 $173.21 | ▲ +4.35% | ▲ +4.82% | — |
Jul 28, 2026 12w ago | 8-K | $126.01 $124.05 | ▼ −1.56% | ▼ −0.02% | — |
May 26, 2026 21w ago | Insider Cluster | $190.81 $182.93 | ▼ −4.13% | ▼ −4.68% | — |
May 15, 2026 23w ago | 8-K | $178.47 $175.83 | ▼ −1.48% | ▼ −0.83% | — |
May 14, 2026 23w ago | Insider Cluster | $191.86 $178.47 | ▼ −6.98% | ▼ −6.92% | — |
May 6, 2026 24w ago | Insider Cluster | $181.78 $186.30 | ▲ +2.49% | ▲ +1.66% | — |
May 6, 2026 24w ago | 8-K | $181.48 $182.36 | ▲ +0.48% | ▲ +0.82% | — |
US Market Status
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