This cluster is too small relative to market cap to warrant a directional trade. Monitor for any material corporate events (earnings, FDA decisions, M&A) that could explain director selling, but treat this as routine portfolio diversification. The historical calibration suggests limited edge on small clusters at this market cap.
Price Chart
Executive Summary
Three Guardant Health directors sold a total of $1.81M in open-market sales over a 7-day window, with the largest sale ($1.23M) by Director Krognes at $132.51. The cluster is dominated by sales, but the total value is only ~0.01% of the $17.6B market cap, making it trivial in proportion. Non-cash derivative exercises by Joyce and Krognes have zero economic impact. The historical calibration shows a -2.41% average net alpha at T+20 for this segment, and the score-6 observed win rate is only 30%, suggesting limited predictive power for this cluster size.
Key Financial Metrics
Key Facts
- Three directors sold shares totaling $1.81M in open-market transactions over 7 days
- Largest sale: Director Krognes sold 9,294 shares at $132.51 for $1.23M on June 4
- Total sales represent ~0.01% of Guardant Health's $17.6B market cap
- Two directors also had non-cash derivative exercises ($0 economic value)
- No C-suite executives participated in the cluster
Financial Impact
Total open-market sales of $1.81M, representing ~0.01% of market cap — trivial
Risk Factors
- Director sales could accelerate if stock continues to appreciate
- No C-suite participation reduces signal quality
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-GH-1780703457000 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 24, 2026 5w ago | Insider Cluster | $163.18 $177.16 | ▲ +8.57% | ▲ +7.25% | $177.80 (+8.96%) |
Aug 13, 2026 7w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $177.80 (+13.10%) |
Aug 13, 2026 7w ago | Insider Cluster | $157.21 $167.84 | ▲ +6.76% | ▲ +8.75% | $177.80 (+13.10%) |
Aug 11, 2026 7w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $177.80 (+7.69%) |
Aug 11, 2026 7w ago | Insider Cluster | $165.11 $159.03 | ▼ −3.68% | ▼ −1.78% | $177.80 (+7.69%) |
Aug 6, 2026 8w ago | Insider Cluster | $168.48 $161.41 | ▼ −4.20% | ▼ −3.80% | $177.80 (+5.53%) |
Jul 30, 2026 9w ago | S-3ASR | $161.99 $161.49 | ▼ −0.31% | ▼ −3.29% | $177.80 (+9.76%) |
Jun 30, 2026 13w ago | Insider Cluster | $170.77 $144.07 | ▼ −15.64% | ▼ −13.45% | $177.80 (+4.12%) |
Jun 22, 2026 14w ago | 144 | $130.83 $148.07 | ▲ +13.18% | ▲ +12.02% | $177.80 (+35.90%) |
Jun 16, 2026 15w ago | Court Ruling | $127.34 $160.11 | ▼ −25.73% | ▼ −25.53% | $177.80 (−39.63%) |
US Market Status
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