Ignore this cluster. The dollar value is immaterial relative to company size, no C-suite participation, and historical model reads on BSX have been net negative at T+20. No directional trading signal.
Price Chart
Executive Summary
Three directors purchased ~$554K of BSX stock in open-market transactions over two days. While a cluster of insider buying is generally a bullish signal, the absolute dollar amount is only ~0.0007% of BSX's $84.2B market cap, rendering it economically trivial. Historical calibration data for this ticker shows past reports have produced negative T+20 outcomes and the calibration cell for this impact level has a low observed probability of up-moves, suggesting this cluster is noise rather than a meaningful signal.
Key Financial Metrics
Key Facts
- Three directors (Ludwig, Pegus, Habiger) purchased shares on May 19-20, 2026.
- Total open-market purchase value: ~$554K across 4 trades.
- Market cap: $84.2B — purchases represent ~0.0007% of market cap, well below the 0.1% materiality threshold.
- No C-suite executives participated; all buyers are independent directors.
- All trades were open-market (code P) — no 10b5-1 plans noted.
- Historical calibration for this ticker shows past reports have significantly underperformed; model score-6/7 cells on BSX have sub-35% up-move probability at T+20.
Financial Impact
Approximately $554K in aggregate insider purchases against an $84.2B market cap — economically insignificant.
Risk Factors
- Past model performance on BSX is poor — do not extrapolate from historical calibration to current filing.
- Director purchases this small are likely personal allocation decisions, not informed trading.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-BSX-1779398497301 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 31, 2026 4w ago | Court Ruling | $48.30 $43.88 | ▼ −9.15% | ▼ −8.96% | $43.23 (−10.50%) |
Aug 26, 2026 5w ago | 8-K | $48.17 $43.72 | ▲ +9.24% | ▲ +10.44% | $43.23 (+10.26%) |
Aug 22, 2026 5w ago | Institutional Cluster | $49.01 $44.92 | ▼ −8.35% | ▼ −9.66% | $43.23 (−11.79%) |
Aug 7, 2026 8w ago | Insider Cluster | $49.31 $47.80 | ▼ −3.06% | ▼ −2.67% | $43.23 (−12.33%) |
Aug 7, 2026 8w ago | Insider Cluster | $49.31 $47.80 | ▼ −3.06% | ▼ −2.67% | $43.23 (−12.33%) |
Aug 5, 2026 8w ago | Insider Cluster | $47.74 $48.37 | ▲ +1.32% | ▲ +1.92% | $43.23 (−9.45%) |
Jul 29, 2026 9w ago | 8-K | $46.04 $48.17 | ▼ −4.63% | ▲ +0.39% | $43.23 (+6.10%) |
Jul 27, 2026 9w ago | 8-K | $46.06 $49.86 | ▲ +8.25% | ▲ +4.87% | $43.23 (−6.14%) |
Jul 27, 2026 9w ago | Court Ruling | $45.51 $49.01 | ▲ +7.69% | ▲ +4.39% | $43.23 (−5.01%) |
Jul 10, 2026 12w ago | Court Ruling | $44.77 $49.30 | ▲ +10.11% | ▲ +7.69% | $43.23 (−3.44%) |
US Market Status
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