The cluster is dominated by active asset managers with conviction buys (Congress +85%, Wasatch new $115.9M), suggesting a fundamental re-rating thesis rather than index rebalancing. Monitor upcoming 10-Q for revenue/guidance updates and any pipeline announcements that could validate the accumulation thesis.
Executive Summary
Five institutional asset managers accumulated $277.5M in HALO during Q3 2026, led by Congress Asset Management ($155.7M increase) and a new $115.9M position from Wasatch Advisors, while two sellers trimmed $34.3M. The strong net buying conviction suggests a shared positive thesis on Halozyme's royalty-based revenue model or pipeline catalysts, though the 45-day reporting lag means positions may have shifted since quarter-end.
Key Financial Metrics
Institutional Positions
Net institutional flow: $243.2M
▲ Buyers (5)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Congress Asset Management | ADD | +85.6% | $251.9M | $155.7M |
| Wasatch Advisors | NEW | +0% | $115.9M | $115.9M |
| Nisa Investment Advisors | DOUBLED | +640.5% | $2.7M | $2.4M |
| Wealth Enhancement Advisory Services | ADD | +49.5% | $5.3M | $3.4M |
| Mather Group | ADD | +48.9% | $46.0K | $24.0K |
▼ Sellers (2)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Assenagon Asset Management | TRIM | -60.2% | $78.1M | -$34.3M |
| Td Waterhouse Canada | TRIM | -38.8% | $9.0K | -$1.0K |
Key Facts
- 5 buyers added $277.5M in aggregate holdings, reaching $375.8M total
- Congress Asset Management increased its stake by 85.6% ($96.2M → $251.9M)
- Wasatch Advisors initiated a new $115.9M position (1.05M shares)
- Nisa Investment Advisors nearly doubled its position (+640.5% shares)
- 2 sellers trimmed $34.3M, led by Assenagon Asset Management (-60.2% of its position)
- All participants are asset managers (no activist or passive/index funds)
Financial Impact
5 institutions accumulated $277.5M in net new holdings while 2 reduced by $34.3M, for net institutional buying of approximately $243.2M
Risk Factors
- 13F data is 45+ days stale; positions may have been partially or fully unwound since quarter-end
- No activist or insider buying corroboration in this cluster to confirm conviction
- All buyers are asset managers, not hedge funds — may reflect longer-term allocation shifts rather than near-term catalyst anticipation
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-HALO-2026-Q3 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 5d ago | Press Release | $124.54 $125.63 | ▲ +0.88% | ▲ +1.40% | — |
Oct 20, 2026 6d ago | Institutional Cluster | $124.83 $124.54 | ▼ −0.23% | ▲ +0.95% | — |
Oct 15, 2026 12d ago | PTAB Trial | $121.84 $122.50 | ▼ −0.54% | ▼ −0.12% | — |
Oct 15, 2026 12d ago | PTAB Trial | $121.84 $122.50 | ▼ −0.54% | ▼ −0.12% | — |
Sep 18, 2026 5w ago | 8-K | $112.45 $111.45 | ▼ −0.89% | ▼ −2.44% | — |
Sep 17, 2026 5w ago | Insider Cluster | $112.45 $111.45 | ▼ −0.89% | ▼ −2.44% | — |
Aug 19, 2026 9w ago | Insider Cluster | $106.12 $108.17 | ▲ +1.93% | ▲ +1.52% | — |
Jul 9, 2026 15w ago | Insider Cluster | $76.20 $76.11 | ▼ −0.12% | ▲ +0.65% | — |
Jul 2, 2026 16w ago | Insider Cluster | $80.78 $81.57 | ▲ +0.98% | ▲ +1.45% | — |
Jun 3, 2026 20w ago | Insider Cluster | $71.60 $71.53 | ▼ −0.10% | ▲ +2.50% | — |
US Market Status
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