ERAS Erasca, Inc.
Executive Summary
Three large passive/asset manager institutions trimmed their Erasca positions in 2025-Q3, while two firms (Invesco and RenTech) added modestly. The net dollar outflow was significant relative to position sizes, with the top 3 sellers reducing by over $314K pre-adjustment. However, the bullish analyst consensus (82% buy-rated) and strong 2026 YTD performance suggest the selling may be tactical rebalancing rather than thesis abandonment.
Key Financial Metrics
Institutional Positions
Net institutional flow: $1.4M
▲ Buyers (2)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Invesco | ADD | +63.8% | $615.0K | $396.0K |
| RenTech | ADD | +36.7% | $2.2M | $1.3M |
▼ Sellers (3)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| UBS | TRIM | 70.5% | $629.0K | -$310.0K |
| Morgan Stanley | TRIM | 55.9% | $774.0K | -$188.0K |
| Wellington Management Group | TRIM | 32.2% | $1.1M | -$184.0K |
Actionable Insight
The cluster is mixed with a slight net buying bias by dollar value ($1.4M net inflow), but the selling side includes passive heavyweights with larger relative cuts. Given the stock's strong 2026 run-up and 82% bullish analyst rating, the selling may reflect profit-taking and index rebalancing rather than fundamental deterioration. Monitor next 13F cycle for whether UBS/MS continue to exit and whether new active specialists initiate.
Key Facts
- 2 institutions added shares (Invesco +64%, RenTech +37%) totaling ~$1.7M in new buying value
- 3 sellers trimmed: UBS (-71%), Morgan Stanley (-56%), Wellington (-32%), with net outward directional flow of -$314K
- RenTech's increase to 1.02M shares ($2.2M), the largest buyer, still at quant-scale rather than full conviction
- No institution exited completely; all remained long in some capacity
- Selling dominated by passive/index managers (UBS, MS) and a large asset manager (Wellington), not specialists
Financial Impact
Three sellers trimmed total net value by ~$314K while two buyers added ~$1.7M — net buying of ~$1.4M across all tracked funds, but selling was more concentrated (3 vs 2)
Risk Factors
- Passive selling could continue into Q4 if stock continues its rally, creating overhead supply
- Low conviction among sellers (all TRIMs, no full EXITs) leaves open the possibility of reversal if catalysts disappoint
- RenTech's ADD is mechanically small relative to its overall book, not a strong conviction signal
Market Snapshot
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-ERAS-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 12, 2026
1d ago
|
Institutional Cluster
| $14.03 awaiting T+5 | awaiting T+5 | — | — |
|
Jun 11, 2026
1d ago
|
Institutional Cluster
| $13.70 awaiting T+5 | awaiting T+5 | — | — |
|
Jun 11, 2026
2d ago
|
Institutional Cluster
| $13.13 awaiting T+5 | awaiting T+5 | — | — |
|
May 11, 2026
4w ago
|
Press Release
| $10.44 $10.27 | ▼ −1.63% | ▼ −1.54% | — |
|
Apr 28, 2026
6w ago
|
DEFA14A
| $9.11 $9.99 | ▲ +9.66% | ▲ +6.55% | — |
|
Apr 27, 2026
6w ago
|
8-K
| $9.90 $10.14 | ▲ +2.42% | ▲ +0.73% | — |
|
Apr 27, 2026
6w ago
|
Press Release
| $9.90 $10.14 | ▲ +2.42% | ▲ +0.73% | — |
|
Apr 27, 2026
6w ago
|
8-K
| $19.15 $10.14 | ▼ −47.05% | ▼ −47.45% | — |
|
Apr 21, 2026
7w ago
|
8-K
| $22.41 $9.90 | ▼ −55.82% | ▼ −56.91% | — |
|
Mar 12, 2026
13w ago
|
Press Release
| $13.62 $14.60 | ▲ +7.20% | ▲ +9.31% | — |
US Market Status
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