CSTL
Castle Biosciences, Inc.
NasdaqGM Healthcare United States
34,37 $US
+3.68% today
-10.82% YTD · +44.78% 1Y
43
Insider transactions
SEC Form 4 · AMF · BaFin — rolling 90 days
16
Hedge funds tracked
Latest available SEC 13F filings
68
/ 100
STRONG

Analysis Castle Biosciences, Inc. (CSTL) — Kairos Score 68/100

Composite score aggregating 8 smart money dimensions: insiders (SEC/AMF/BaFin), hedge funds, politicians & gurus, price momentum, valuation, analyst consensus, financial health, earnings momentum. The higher the score, the more favorable the institutional signals consensus.

💡 Detailed breakdown (the 8 sub-scores) available in the Premium dashboard.

About Castle Biosciences, Inc.

Castle Biosciences, Inc., a molecular diagnostics company, provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), atopic dermatitis (AD), and uveal melanoma. The company offers DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test that predicts the likelihood of a positive sentinel lymph node and the risk of metastasis for patients with invasive cutaneous melanoma; TissueCypher, a risk stratification spatialomics test to predict future development of high-grade dysplasia and/or esophageal cancer in patients with non-dysplastic, indefinite dysplasia, and low-grade dysplasia BE; AdvanceAD-Tx, a non-invasive GEP test which is designed to guide systemic treatment selection for patients aged 12 years and older with moderateto-severe AD; DecisionDx-SCC, a GEP test for cutaneous squamous cell carcinoma; and MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions. It also provides DecisionDx-UM, a risk stratification GEP test that predicts the risk of metastasis for patients with uveal melanoma. The company offers its products to dermatology and gastroenterology markets. The company was incorporated in 2007 and is headquartered in Friendswood, Texas.

Key info

👔
CEO
Mr. Derek J. Maetzold
📍
HQ
1500 W. Parkwood Ave, Suite 400, Friendswood, TX, 77546, United States
👥
Employees
1 002
💰
Market cap
1 049 986 560,00 $US
💸
Dividend yield
0.00%

🕴️ Insider activity (90 days)

43 transactions — 0 buys and 37 sales reported by Castle Biosciences, Inc. executives.

MD
MAETZOLD DEREK J
Pres. & Chief Exec. Officer · 2026-10-19
Sell
MD
MAETZOLD DEREK J
Pres. & Chief Exec. Officer · 2026-10-19
Sell
MD
MAETZOLD DEREK J
Pres. & Chief Exec. Officer · 2026-10-19
Sell

🏦 Hedge Funds

16 institutional funds report a position on CSTL in their latest SEC quarterly filing.

VANGUARD GROUP INC
BlackRock, Inc.
PRINCIPAL FINANCIAL GROUP INC
VANGUARD CAPITAL MANAGEMENT LLC
VANGUARD PORTFOLIO MANAGEMENT LLC

📰 Recent news

15 recent articles on CSTL.

🧠 What makes Kairos Insider

Beyond raw data, we aggregate and score every smart money signal to give you a unique view.

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Kairos Score 0-100

8-dimension composite score: insiders · hedge funds · politicians · momentum · valuation · health · analysts · earnings.

🎯

Insider Clusters

Detection of clustered purchases or sales by several executives in the same stock.

🏦

13F Hedge Funds

Berkshire, Pershing Square, Tiger Global, Bridgewater and other reporting funds.

📈

ETF Rotations

NANC & GOP (Pelosi & Republicans), GURU (top hedge funds), ARK (Cathie Wood). See who enters and exits each week.

🔥

Google Trends

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Companies in the same sector as Castle Biosciences, Inc.

Official sources · Public data · SEC EDGAR — Form 4 & 13F · AMF — Executive filings · BaFin — Directors' Dealings · Yahoo Finance · Alpha Vantage

🔓 Unlock the full analysis

This public page only shows a preview. The full analysis of CSTL on the Kairos Insider dashboard includes:

✅ Full Kairos Score (8-axis radar + synthesis)
✅ History of all 43 insider transactions over 90 days
✅ All 16 detected institutional funds
✅ Thematic ETFs (ARK, BUZZ, NANC, GOP, JEPI…)
✅ Hot Stocks Google Trends
✅ Available history: AUM + rotations
✅ Fundamentals (P/E, PEG, EV/EBITDA, ROE…)
✅ Financial health (Altman Z, Piotroski F)
✅ Sector peers + recent earnings
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