CSTL logo

CASTLE BIOSCIENCES INC

CSTLNASDAQ
๐Ÿ† #2283 by market capEarnings Nov 5 ยท PostUS Equity
$38.51โ–ฒ $1.83 (+4.99%)
๐ŸŒ… Pre-market$38.52โ–ฒ 0.03%Regular close ยท extended-hours price shown
๐Ÿ””
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24hโ–ฒ 5.0%
7dโ–ฒ 16.2%
14dโ–ฒ 20.6%
30dโ–ฒ 8.0%
ytdโ–ผ 0.9%
1yโ–ฒ 59.1%
๐ŸฆMarket Cap
$1.18B
Small Cap
๐Ÿ“ˆRevenue Growth (YoY)
3.2%
Slowing
๐Ÿ“ŠGross Margin
77.3%
High
๐Ÿ’ตFCF Margin
9.5%
Moderate
โš–๏ธP/S Ratio
3.3x
Fair
Otter Score
76
Strong

Trading Snapshot

Day Range
$36.09 โ€“ $38.73
52-Week Range
$17.72 โ€“ $44.28
Volume (shares)
723,808
Avg Volume (shares)
โ€”
Shares Outstanding
30.6M
Next Earnings
2026-11-05

Fundamentals Snapshot

Annual Revenue
$344M
Last Q Revenue
$104M
P/E Ratio
โ€”
P/S Ratio
3.3x
EPS (TTM)
$-0.65
Dividend Yield
โ€”
Dilution (1yr)
โˆ’2.9%
CSTL logo

CASTLE BIOSCIENCES INC

CSTL
Financial Trends
RevenueThe total money the company brought in from sales, before subtracting any costs.
$344Mโ–ฒ +3.7% YoY
Gross MarginOf every $1 of sales, how much is left after the direct cost of making the product/service. Higher = more efficient.
79.4%โ–ผ โˆ’3.1% YoY
Operating IncomeProfit from the core business after operating costs, but before interest and taxes. Negative means the core business isnโ€™t profitable yet.
โˆ’$43Mโ–ผ โˆ’593.8% YoY
Free Cash FlowCash left over after running the business and paying for equipment/capex. Negative means the company is burning cash.
$28Mโ–ผ โˆ’22.5% YoY
Shares OutstandingHow many shares exist. Rising means the company is issuing more shares, which dilutes (shrinks) each existing ownerโ€™s slice.
29.3Mโ–ผ โˆ’2.9% YoY
Net CashCash minus total debt. Positive = more cash than debt (financially strong); negative = more debt than cash (net debt).
$80Mโ–ผ โˆ’$14M YoY
StockOtter ยท stockotter.space

About CASTLE BIOSCIENCES INC

Castle Biosciences, Inc. functions as a commercial-stage diagnostics firm, with its primary objective being the provision of both diagnostic and prognostic testing services, specifically targeting various dermatological cancers. Their flagship product, DecisionDx-Melanoma, represents an advanced multi-gene expression profile (GEP) assay engineered to assess the probability of metastasis in patients afflicted with invasive cutaneous melanoma. In addition to their leading solution, the company has created several other specialized, proprietary tests. Among these is DecisionDx-UM, a GEP test tailored to forecast the risk of metastasis for individuals with uveal melanoma, a less common malignancy of the eye. Another key offering is DecisionDx-SCC, a distinctive 40-gene expression profile test that utilizes a patient's unique tumor biology to predict their specific risk of squamous cell carcinoma metastasis, particularly for those presenting with recognized risk factors. Moreover, they offer DecisionDx DiffDx-Melanoma and myPath Melanoma, both proprietary GEP tests employed to assist in the accurate diagnosis of ambiguous pigmented lesions. These specialized testing services are provided by Castle Biosciences to patients predominantly through their healthcare providers. The organization commenced operations in 2007 and maintains its corporate headquarters in Friendswood, Texas.

๐Ÿฆฆ

Otter Score Breakdown

How it's scoredFive components, each rated 1โ€“5โ˜… and equally weighted (20%), averaged to a 0โ€“100 score:๐Ÿ’Ž Quality โ€” gross margin๐Ÿš€ Growth โ€” revenue YoYโš–๏ธ Valuation โ€” P/S ratioโšก Momentum โ€” 30-day price change๐Ÿ’ง Dilution โ€” 1-yr share issuance (buybacks score higher)
๐Ÿ’ŽQualityโ˜…โ˜…โ˜…โ˜…โ˜…
๐Ÿš€Growthโ˜…โ˜…โ˜…โ˜…โ˜…
โš–๏ธValuationโ˜…โ˜…โ˜…โ˜…โ˜…
โšกMomentumโ˜…โ˜…โ˜…โ˜…โ˜…
๐Ÿ’งDilutionโ˜…โ˜…โ˜…โ˜…โ˜…
Overall Score
Strong
76/100

Analyst Ratings

โ“˜
Consensus
Buy
15 analysts
Strong Buy7
Buy7
Hold1
Sell0
Strong Sell0
Ratings as of Oct 2026

Latest News & Updates

PRNewsWireยท2d ago

Castle Biosciences to Participate in Upcoming Investor Conferences

FRIENDSWOOD, Texas, Oct. 28, 2026 /PRNewswire/ -- Castle Biosciences, Inc.ย (Nasdaq: CSTL), a company improving health through innovative tests that guide patient care, today announced that its executive management is sch

PRNewsWireยท15d ago

Castle Biosciences to Release Third Quarter 2026 Financial Results and Host Webcast on Thursday, Nov. 5, 2026

FRIENDSWOOD, Texas, Oct. 15, 2026 /PRNewswire/ -- Castle Biosciences, Inc.ย (Nasdaq: CSTL), a company improving health through innovative tests that guide patient care, today announced that it will release its financial r

GuruFocusยท17d ago

Castle Biosciences Inc (CSTL) Shares Fall 4.8% -- What GF Score of 80 Tells Investors

Castle Biosciences Valuation AssessmentOn October 12, 2026, Castle Biosciences Inc (CSTL) shares fell 4.8% to $32.76, marking a significant decline in the conte

PRNewsWireยท17d ago

ACG 2026 Data Show TissueCypherยฎ Identifies Elevated Risk of Progression Beyond Pathology Findings in Barrett's Esophagus

Studies highlight how molecular risk assessment with TissueCypher can help inform surveillance and treatment decisions beyond biopsy findings alone FRIENDSWOOD, Texas, Oct. 12, 2026 /PRNewswire/ -- Castle Biosciences, In

Defense Worldยท23d ago

Castle Biosciences (NASDAQ:CSTL) Stock Price Down 6.1% Following Insider Selling

Shares of Castle Biosciences, Inc. (NASDAQ: CSTL - Get Free Report) fell 6.1% during mid-day trading on Tuesday after an insider sold shares in the company. The stock traded as low as $34.48 and last traded at $34.4220.

Defense Worldยท28d ago

Castle Biosciences (NASDAQ:CSTL) Insider Tobin Juvenal Sells 1,034 Shares of Stock

Castle Biosciences, Inc. (NASDAQ: CSTL - Get Free Report) insider Tobin Juvenal sold 1,034 shares of the company's stock in a transaction that occurred on Wednesday, September 30th. The shares were sold at an average pri