WGS GeneDx Holdings Corp.
Price Chart
Executive Summary
Two large-position insiders at GeneDx (WGS) — Casdin Capital (a director/10% owner) and director Keith Meister — purchased a combined $8.5M in stock over a five-day window ending May 18, 2026, with prices ranging from $38.28 to $42.55. This follows a broader 30-day insider buying spree totaling $39.8M, suggesting strong conviction in the company's trajectory or imminent catalyst.
Key Financial Metrics
Actionable Insight
Insider cluster buys of this size from two separate prominent insiders are rare and historically predictive per academic literature (Cohen/Malloy/Pomorski 2012: ~6% abnormal annual returns; Kang et al. 2018: cluster buys deliver ~3.8% 21-day CAR). The lack of 10b5-1 plans and the accelerating pace (Casdin bought every day May 18-20) suggests informed trading. Monitor for upcoming catalyst — earnings, M&A, or major partnership — that could explain the conviction buying. Cross-filing overrides amplify impact signal across insider-trades + earnings/agreement/offering contexts; consider scaling into a position.
Key Facts
- Two insiders (both directors with 10%+ positions) bought $8.5M in open-market purchases over 5 days.
- Casdin Capital purchased 500K shares ($21.5M) across May 18-20; Keith Meister bought 115.5K shares ($4.5M) on May 14-15.
- This cluster is part of a 30-day pattern of 10 insider buys totaling $39.8M — exceptional volume for a $1.3B market cap company.
- All purchases were direct open-market buys (code P) — not options exercises, awards, or 10b5-1 plan-driven.
- Total cluster value represents ~0.65% of WGS market cap — significant magnitude.
Financial Impact
$8.5M cluster value at ~$0.65% of market cap; broader $39.8M 30-day volume at ~3% of market cap
Risk Factors
- Insider buying does not guarantee near-term stock performance; historical WGS reports show negative T+20 alpha (-4.79%).
- Both buyers are directors/10% owners who may be focused on long-term governance rather than short-term trading — the buy signal may be slower to materialize.
- Stock has already rallied from ~$38 to ~$43 during the cluster window; some buying may be chasing momentum, not a fresh catalyst.
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-WGS-1779320766396 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 8, 2026
1d ago
|
Insider Cluster
| $51.75 awaiting T+5 | awaiting T+5 | — | $51.80 (+0.11%) |
|
May 20, 2026
20d ago
|
Insider Cluster
| $47.33 $50.15 | ▲ +5.96% | ▲ +4.36% | $51.80 (+9.44%) |
|
Mar 26, 2026
10w ago
|
Insider Cluster
| $61.35 $66.20 | ▼ −7.91% | ▼ −6.27% | $51.80 (+15.57%) |
|
Mar 4, 2026
14w ago
|
Insider Cluster
| $79.47 $85.10 | ▼ −7.08% | ▼ −8.42% | $51.80 (+34.82%) |
|
Mar 4, 2026
14w ago
|
Insider Cluster
| $79.47 $85.10 | ▲ +7.08% | ▲ +8.42% | $51.80 (−34.82%) |
US Market Status
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