Castle Biosciences, Inc. CSTL

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Price alert · CSTL

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34.94 USD -2.22 -5.97%

At close · Nov 2

34.94 0.00 0.00%

After hours · Nov 2, 4:00 PM ET

Bid
34.88 × 2
Ask
34.94 × 2
34.46 Day range 37.52
17.72 52-week range 44.28
YTD
-10.18%
1 year
+37.02%
Open
37.52
Prev close
37.16
Mkt cap
1.07B
Vol
470.27K
Avg vol
377.09K
EPS
-0.64
P/E
0.00
Div yield
0.00%
More statistics
Low
34.46
High
37.52
Forward P/E
-37.37
Beta
0.95
Short ratio
5.17
Inst. own
90.36%
Dividend
0.00
Ex-div date
Earnings
Nov 5, 2026
50-d avg
34.22
200-d avg
28.53
1y target
46.70

5Y chart

Chart tools
Interval

Events in this range
  • Aug 4, 2025Earnings: 0.15; estimate -0.51; surprise 129.41%
  • Nov 3, 2025Earnings: -0.02; estimate -0.34; surprise 94.12%
  • Feb 26, 2026Earnings: -0.08; estimate -0.23; surprise 65.22%
  • Feb 27, 2026Rating: Baird · Outperform → Outperform
  • Apr 20, 2026Rating: Canaccord Genuity · Buy → Buy
  • May 6, 2026Earnings: -0.49; estimate -0.49; surprise 0%
  • May 7, 2026Rating: Baird · Outperform → Outperform
  • May 13, 2026Rating: BTIG · Buy → Buy
  • Jun 25, 2026Rating: Roth Capital · — → Buy
  • Jul 30, 2026Earnings: -0.07; estimate -0.40697; surprise 82.8%
  • Aug 3, 2026Rating: BTIG · Buy → Buy
  • Nov 5, 2026Earnings: —; estimate -0.348; surprise —%
Signals (99)
NameDateAgo
SMA: BullishOct 26, 20261 week ago
SMA: BearishOct 12, 20263 weeks ago
SMA: BullishJul 27, 20263 months ago
MACD: Buy SignalJun 29, 20264 months ago
SMA: BullishJun 22, 20264 months ago
SMA: BearishFeb 16, 20268 months ago
MACD: Sell SignalFeb 2, 20269 months ago
SMA: BearishJan 26, 20269 months ago
RSI: OverboughtNov 3, 20251 year ago
SMA: BullishOct 20, 20251 year ago
SMA: BearishOct 13, 20251 year ago
SMA: BullishAug 18, 20251 year ago
SMA: BullishAug 4, 20251 year ago
MACD: Buy SignalAug 4, 20251 year ago
MACD: Sell SignalJul 28, 20251 year ago
SMA: BearishJul 14, 20251 year ago
MACD: Buy SignalJun 16, 20251 year ago
SMA: BullishJun 9, 20251 year ago
SMA: BearishApr 21, 20251 year ago
SMA: BullishApr 14, 20251 year ago

Newest 20 of 99.

Key statistics

Market cap
1.07B
Enterprise value
905.06M
Trailing P/E
0.00
Forward P/E
-37.37
PEG ratio
0.00
Price / sales
2.99
Price / book
2.27
EPS (TTM)
-0.64
Beta
0.95
Dividend yield
0.00%
Payout ratio
0.00%
Profit margin
-5.43%
Revenue (TTM)
357.28M
Revenue growth
20.10%
Free cash flow
-7.26M
Total cash
266.80M
Total debt
36.65M
Return on equity
-4.20%
Shares outstanding
30.55M
Short % of float
6.76%
50-day average
34.22
200-day average
28.53

Financials — quick view

All financials
CSTL Revenue — quarterly 103.55M
2022-Q3 20222022-Q4 20222023-Q1 20232023-Q2 20232023-Q3 20232023-Q4 20232024-Q1 20242024-Q2 20242024-Q3 20242024-Q4 20242025-Q1 20252025-Q2 20252025-Q3 20252025-Q4 20252026-Q1 20262026-Q2 2026
CSTL Net income — quarterly -2.06M
2022-Q3 20222022-Q4 20222023-Q1 20232023-Q2 20232023-Q3 20232023-Q4 20232024-Q1 20242024-Q2 20242024-Q3 20242024-Q4 20242025-Q1 20252025-Q2 20252025-Q3 20252025-Q4 20252026-Q1 20262026-Q2 2026
CSTL EPS — quarterly -0.07
2022-Q3 20222022-Q4 20222023-Q1 20232023-Q2 20232023-Q3 20232023-Q4 20232024-Q1 20242024-Q2 20242024-Q3 20242024-Q4 20242025-Q1 20252025-Q2 20252025-Q3 20252025-Q4 20252026-Q1 20262026-Q2 2026

Earnings

CSTL recent earnings
Report dateQuarter endingEPS estimateEPS reportedSurpriseSurprise %
Nov 5, 2026Sep 30, 2026-0.348———
Jul 30, 2026Jun 30, 2026-0.40697-0.07+0.34+82.80%
May 6, 2026Mar 31, 2026-0.49-0.490.000.00%
Feb 26, 2026Dec 31, 2025-0.23-0.08+0.15+65.22%
Nov 3, 2025Sep 30, 2025-0.34-0.02+0.32+94.12%
Aug 4, 2025Jun 30, 2025-0.510.15+0.66+129.41%

Upgrades / downgrades

CSTL analyst upgrades and downgrades
DateFirmActionFromTo
Aug 3, 2026BTIGmainBuyBuy
Jun 25, 2026Roth Capitalinit—Buy
May 13, 2026BTIGmainBuyBuy
May 7, 2026BairdmainOutperformOutperform
Apr 20, 2026Canaccord GenuitymainBuyBuy
Feb 27, 2026BairdmainOutperformOutperform

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.

Sector
Healthcare
Industry
Diagnostics & Research
Country
United States

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Insider holders

CSTL insider holders
InsiderRelationLatest transactionDateShares held
BRADBURY DANIEL MDirectorConversion of Exercise of derivative securityMay 21, 202635,631
CAPLE KIMDirectorConversion of Exercise of derivative securityMay 21, 202636,121
COTTON RODNEYDirectorConversion of Exercise of derivative securityMay 21, 202632,998
GOLDBERG ELLENDirectorConversion of Exercise of derivative securityMay 21, 202640,921
HARRISON MILES DDirectorConversion of Exercise of derivative securityMay 21, 202635,631
JUVENAL TOBIN WOfficerSaleOct 25, 202645,431

Institution ownership

CSTL institution ownership
Holder% heldSharesValueReported
Blackrock Inc.10.78%3,291,963115.02MJun 29, 2026
RTW Investments LP9.09%2,778,33597.08MJun 29, 2026
Principal Financial Group, Inc.5.65%1,726,64860.33MJun 29, 2026
Vanguard Capital Management LLC4.01%1,226,49742.85MJun 29, 2026
Acadian Asset Management. LLC3.01%918,66832.10MJun 29, 2026
Allianz Asset Management GmbH2.88%879,25830.72MJun 29, 2026

Fund ownership

CSTL fund ownership
Holder% heldSharesValueReported
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund2.79%852,70429.79MJun 29, 2026
Fidelity Rutland Square TRT II-Strategic Advisers U.S. Total Stock Fd.2.60%793,43827.72MAug 30, 2026
iShares Trust-iShares Russell 2000 ETF2.54%776,29827.12MSep 29, 2026
Principal Funds, Inc-SmallCap Fund2.37%725,13825.34MJul 30, 2026
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund1.12%342,65511.97MJun 29, 2026
Fidelity Salem Street Trust-Fidelity Small Cap Index Fund1.07%327,80611.45MJul 30, 2026