Institutional cluster shows significant net selling led by quantitative funds (Citadel, D.E. Shaw). Despite bullish analyst consensus, this selling pressure flags potential near-term weakness. Monitor for further insider activity or guidance changes.
Executive Summary
Institutional cluster for CSTL reveals 5 sellers (notably Citadel trimming 71.8% of its stake) vs 2 passive buyers, resulting in net selling of ~$11M. Quant funds leading the exit suggests caution despite bullish analyst sentiment.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$11.0M
▲ Buyers (2)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Morgan Stanley | ADD | +60.9% | $6.1M | $2.7M |
| Invesco | ADD | +38.1% | $1.3M | $446.0K |
▼ Sellers (5)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| D.E. Shaw | TRIM | -37.5% | $3.0M | -$917.2K |
| Citadel | TRIM | -71.8% | $18.1M | -$12.4M |
| Ubs Am, A Distinct Business Un | TRIM | -44.1% | $2.1M | -$789.6K |
| Ameriprise Financial | TRIM | -31.2% | $7.6M | -$1.8M |
| Barclays | TRIM | -33.4% | $2.0K | $1.7M |
Key Facts
- 5 institutions reduced positions by $14.2M while 2 passive funds added $3.2M
- Net institutional selling of approximately $11.0M
- Citadel cut 71.8% of its stake, selling $12.4M worth
- D.E. Shaw reduced by 37.5%, selling $917K
- Only passive buyers (Morgan Stanley, Invesco) added shares
Financial Impact
5 institutions reduced holdings by $14.2M while 2 passive funds added $3.2M, resulting in net institutional selling of approximately $11.0M.
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound further
- Passive buying could offset selling pressure
- Strong analyst consensus may be overoptimistic
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-CSTL-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 5d ago | Insider Cluster | $33.19 $33.08 | ▼ −0.33% | ▲ +0.19% | — |
Oct 5, 2026 21d ago | 144 | $33.36 $33.00 | ▼ −1.08% | ▼ −0.84% | — |
Oct 5, 2026 21d ago | Insider Cluster | $33.36 $33.00 | ▼ −1.08% | ▼ −0.84% | — |
Sep 23, 2026 4w ago | Insider Cluster | $35.19 $35.81 | ▼ −1.76% | ▼ −1.22% | — |
Sep 16, 2026 5w ago | Insider Cluster | $36.78 $35.34 | ▼ −3.92% | ▼ −4.04% | — |
Sep 11, 2026 6w ago | 144 | $33.44 $35.50 | ▲ +6.16% | ▲ +6.62% | — |
Sep 3, 2026 7w ago | Insider Cluster | $32.91 $32.76 | ▲ +0.46% | ▼ −0.09% | — |
Sep 2, 2026 7w ago | Insider Cluster | $32.65 $32.91 | ▲ +0.80% | ▲ +1.18% | — |
Sep 1, 2026 7w ago | Insider Cluster | $33.42 $32.65 | ▼ −2.30% | ▼ −3.35% | — |
Aug 27, 2026 8w ago | Insider Cluster | $33.50 $33.03 | ▼ −1.40% | ▼ −1.10% | — |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers