The cluster shows no strong conviction signal: buying is trivial in scale and from small advisors, while the sole meaningful seller reduced by a material amount. Monitor the upcoming Q3 earnings call for updated 2026 guidance and any commentary on the Alesta integration, which could drive larger institutional repositioning.
Executive Summary
Three small asset managers added to their BMRN positions in Q3 2026, while one larger institutional holder trimmed significantly. The buying is modest in scale and dominated by small advisors, whereas the single seller reduced by $10M, far outweighing the combined $625K in buying. The cluster is weak and one-sided toward selling in dollar terms, with no insider buying corroboration.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$9.4M
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Mirae Asset Global Investments Co. | ADD | +29.5% | $705.0K | $186.0K |
| Mather Group | ADD | +71% | $140.0K | $62.0K |
| Concurrent Investment Advisors | ADD | +39.9% | $1.2M | $377.0K |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Robeco Institutional Asset Management B.v. | TRIM | -45.4% | $23.4M | -$10.0M |
Key Facts
- 3 buyers added a combined $625K in new value; 1 seller trimmed $10.0M
- Robeco Institutional Asset Management reduced its stake by 45.4%, selling $10.0M worth of shares
- No open-market insider buying; 13F × Form 4 confluence score is 0/100 (divergent)
- Q3 2026 earnings included ~$283M in non-cash IPR&D charges from the Alesta acquisition, reducing EPS by ~$1.50
Financial Impact
Net institutional selling of approximately $9.4M in Q3 2026, driven by a single $10.0M trim from Robeco Institutional Asset Management, partially offset by $625K in small advisor additions.
Risk Factors
- 13F data is 45+ days stale; positions may have been unwound or added to since quarter-end
- Single large seller dominates the cluster; no broad-based institutional conviction in either direction
- Non-cash IPR&D charges from Alesta acquisition may obscure underlying operational trends
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-BMRN-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 29, 2026 3d ago | Institutional Cluster | $57.49 | awaiting T+5 | awaiting T+5 | No price |
Oct 27, 2026 5d ago | Institutional Cluster | $56.00 | awaiting T+5 | awaiting T+5 | No price |
Oct 6, 2026 26d ago | 8-K | $55.20 $55.14 | ▲ +0.11% | ▼ −0.87% | No price |
Sep 15, 2026 6w ago | 8-K | $64.45 $63.94 | ▼ −0.79% | ▼ −1.61% | No price |
Sep 14, 2026 6w ago | 8-K | $66.41 $64.06 | ▼ −3.54% | ▼ −3.65% | No price |
Sep 1, 2026 8w ago | 8-K | $64.84 $64.41 | ▼ −0.66% | ▼ −0.74% | No price |
Sep 1, 2026 8w ago | Press Release | $64.84 $64.41 | ▼ −0.66% | ▼ −0.74% | No price |
Aug 31, 2026 8w ago | 8-K | $65.23 $64.63 | ▼ −0.92% | ▼ −0.78% | No price |
Aug 18, 2026 10w ago | 8-K | $66.99 $66.12 | ▼ −1.30% | ▼ −1.10% | No price |
Jun 4, 2026 21w ago | 8-K | $56.77 $55.95 | ▼ −1.44% | ▼ −2.01% | No price |
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