The institutional cluster is a strong bullish signal, particularly given the dominance of active managers and the actuarial amplifier flag for the offering+cluster combo. However, the lack of insider buying and the 45-day 13F reporting lag warrant caution. Monitor for any insider open-market purchases or further pipeline catalysts (ERAS-0015 data) that could confirm the thesis. The stock's +15.3% average T+20 return on prior bullish reports suggests momentum may continue.
Executive Summary
A strong institutional cluster formed in ERAS during 2026-Q2, with 16 buyers accumulating $104.2M net against just 1 seller trimming $4.5M. The buying is dominated by active asset managers, including three new positions from Capital World Investors ($12.9M), Assenagon ($14.9M), and Jennison Associates ($51.1M), the latter being the largest single new stake. This cluster follows a $550M follow-on offering 29 days ago, and the cross-filing actuarial verdict flags this combo (offering + institutional cluster) as a statistically significant amplifier. The historical win rate on ERAS reports is 67% at T+20 with +15.3% average return, supporting conviction in this signal, though no insider open-market buying corroborates the institutional thesis.
Key Financial Metrics
Institutional Positions
Net institutional flow: $104.2M
▲ Buyers (16)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Jennison Associates | NEW | +0% | $51.1M | $51.1M |
| Assenagon Asset Management | NEW | +0% | $14.9M | $14.9M |
| Capital World Investors | NEW | +0% | $12.9M | $12.9M |
| Citigroup | DOUBLED | +1352.9% | $13.1M | $12.3M |
| Td Asset Management | ADD | +67.7% | $12.1M | $5.7M |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| JPMorgan | TRIM | -45.8% | $13.8M | -$4.5M |
Key Facts
- 16 institutions accumulated $104.2M net in ERAS during 2026-Q2
- Jennison Associates opened a new $51.1M position, the largest single buy
- Capital World Investors and Assenagon each opened new positions of $12.9M and $14.9M respectively
- Only 1 seller (JPMorgan) trimmed $4.5M, representing minimal sell-side pressure
- Cluster follows a $550M follow-on offering 29 days ago; cross-filing actuarial verdict flags this combo as an amplifier
- No insider open-market buying corroborates the institutional cluster
- Historical ERAS reports show 67% win rate at T+20 with +15.3% average return
Financial Impact
16 institutional buyers accumulated $104.2M in net new positions, while 1 seller reduced holdings by $4.5M, resulting in a net inflow of approximately $99.7M
Risk Factors
- 13F data is 45+ days stale; the cluster may have already been unwound
- No insider open-market buying to corroborate the institutional thesis
- Recent $550M dilutive offering could cap near-term upside
- Score calibration shows only 47-55% observed probability of up-moves at score 6-7, with asymmetric downside risk (μ_l -12% to -17%)
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-ERAS-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 24, 2026 5w ago | 8-K | $17.60 $15.55 | ▼ −11.65% | ▼ −12.96% | — |
Aug 17, 2026 6w ago | 144 | $18.28 $16.16 | ▼ −11.60% | ▼ −10.07% | — |
Aug 13, 2026 7w ago | Institutional Cluster | $17.86 $15.88 | ▼ −11.09% | ▼ −9.34% | — |
Aug 12, 2026 7w ago | 3 | $17.86 $15.88 | ▼ −11.09% | ▼ −9.34% | — |
Aug 11, 2026 7w ago | Press Release | $18.58 $16.03 | ▼ −13.72% | ▼ −11.83% | — |
Jul 22, 2026 10w ago | Press Release | $19.51 $18.07 | ▲ +7.38% | ▲ +10.28% | — |
Jul 14, 2026 11w ago | 8-K | $21.26 $18.58 | ▼ −12.61% | ▼ −14.95% | — |
Jul 14, 2026 11w ago | 424B5 | $21.26 $18.58 | ▼ −12.61% | ▼ −14.95% | — |
Jul 14, 2026 11w ago | Press Release | $19.50 $18.31 | ▲ +6.10% | ▲ +8.59% | — |
Jul 13, 2026 11w ago | Press Release | $19.50 $18.31 | ▼ −6.10% | ▼ −8.59% | — |
US Market Status
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