Sunday, November 1, 2026

Castle Biosciences Stock Drops By 18% In The Last 5 Sessions

Castle Biosciences Stock Drops By 18% In The Last 5 Sessions

(VIANEWS) - Shares of Castle Biosciences (NASDAQ: CSTL) slid by a staggering 18.96% in 5 sessions from $24.68 at -18.96, to $20.00 at 13:28 EST on Friday, after four consecutive sessions in a row of losses. NASDAQ is falling 1.26% to $11,196.00, following the last session's downward trend.

Castle Biosciences's last close was $21.28, 56.03% under its 52-week high of $48.40.

About Castle Biosciences

Castle Biosciences, Inc., a commercial-stage diagnostics company, focuses to provide diagnostic and prognostic testing services for dermatological cancers. Its lead product is DecisionDx-Melanoma, a multi-gene expression profile (GEP) test to identify the risk of metastasis for patients diagnosed with invasive cutaneous melanoma. The company also offers DecisionDx-UM test, a proprietary GEP test that predicts the risk of metastasis for patients with uveal melanoma, a rare eye cancer; DecisionDx-SCC, a proprietary 40-gene expression profile test that uses an individual patient's tumor biology to predict individual risk of squamous cell carcinoma metastasis for patients with one or more risk factors; and DecisionDx DiffDx-Melanoma and myPath Melanoma, a proprietary GEP test to diagnose suspicious pigmented lesions. It offers test services through physicians and their patients. The company was founded in 2007 and is headquartered in Friendswood, Texas.

Earnings Per Share

As for profitability, Castle Biosciences has a trailing twelve months EPS of $-1.24.

The company's return on equity, which measures the profitability of a business relative to shareholder's equity, for the twelve trailing months is negative -12.86%.

More news about Castle Biosciences (CSTL).

ViaNews Editorial Team

Via News Editorial Team delivers comprehensive financial news coverage and market analysis from journalists around the world. Our team specializes in data journalism and in-depth reporting on stock markets, business developments, and economic trends.

What we know · the intelligence behind this page
Live from the substrate
What we're seeing
Agentic AI Goes Operational: Platform Governance, Local Silicon, and the Physical-AI Data Race
In mid-to-late October 2026, enterprise vendors (Cisco, Fortinet, ServiceNow, Intuit, Salesforce/Braze, Adobe) shipped agent governance, AI security and AI-driven customer engagement products, while a parallel hardware wave (NVIDIA RTX Spark laptops, ASUS, Apple's iPad mini, Microsoft's hybrid local/cloud Windows) pushed AI onto local devices. A third strand, physical AI (Encord, Harvest Praxis, Hesai), argues that real-world sensor data and cheaper edge chips are the next bottleneck. The common thread is the shift from AI experimentation to governed, scaled deployment, with Salesforce's Braze acquisition showing consolidation and fintech players like Intuit tying AI to trusted financial data. The facts support a broad industry theme but contain little direct finance or regulatory evidence, so the AI-finance angle is thin.
Our read on the data ›
Signals we're tracking
EPKINLY Regulatory-Clinical Success Cascade
High probability of expanded label indications, additional combination approvals, and competitive positioning strength in follicular lymphoma market. Predicts positive commercial uptake and potential accelerated review for related indications.
Patterns we're watching ›
Where sources disagree
Ford Motor Company
Both facts give cash for Ford Motor Company at the same point in time (2025-12-31; FY 2025 year-end and Q4 2025 year-end are the same date). Both are labelled USD, but the values are 23,356,000,000 and 23.356, which cannot both be true in USD. The two numbers agree once the second is read as billions (23.356 bn = 23,356,000,000), so the economic content is consistent and the conflict is a unit/scale error in the Q4 2025 record. The period is not the reason for the conflict: a Q4 and an FY figure at the same year-end date should match.
We flag conflicts openly ›
Recently verified
✓ Checked against the original source
4,995
facts traced to their source — and we flag the ones that don't hold up.
101 entities tracked4,995 facts checked against source5,532 source documents archived
Query this data → isubstrate.com