CSTL Stock Analysis: Buy, Sell, or Hold?
CSTL - Castle Biosciences, Inc. Common Stock
$28.00
1.21 (4.52%)
▲
5d:
+13.43%
30d:
+13.31%
90d:
+14.33%
HOLD
MODERATE Confidence
Analysis Updated: Jul 31, 2026 12:00 AM ET
Earnings: Jul 30, 2026
0d
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Interactive Price Chart (1 Month)
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Bottom Line:
📊 HOLD - EXTENDED: CSTL is 10.2% above its trading range ($25.40). Fundamentals are solid but entry is stretched. Hold existing positions; wait for pullback to add new shares.
📊 HOLD - EXTENDED: CSTL is 10.2% above its trading range ($25.40). Fundamentals are solid but entry is stretched. Hold existing positions; wait for pullback to add new shares.
In-depth Analysis How we analyze
Valuation Analysis: CSTL is currently trading at $28.00, which is considered extended relative to its 30-day fair value range of $22.76 to $25.40.
Technical Outlook: Technically, CSTL is showing sideways momentum. Immediate support is located at $23.25, while resistance sits at $30.81. The stock is showing strong short-term momentum, up 4.5% recently.
Market Sentiment: CSTL has a strong technical setup (60/100), with favorable trendlines, momentum, and price action for short-term traders. Wall Street analysts see significant upside, with an average price target of $42.78 (+52.8%). The stock is fairly positioned - fine to hold existing positions or accumulate slowly on dips, but not an urgent buy.
Technical Outlook: Technically, CSTL is showing sideways momentum. Immediate support is located at $23.25, while resistance sits at $30.81. The stock is showing strong short-term momentum, up 4.5% recently.
Market Sentiment: CSTL has a strong technical setup (60/100), with favorable trendlines, momentum, and price action for short-term traders. Wall Street analysts see significant upside, with an average price target of $42.78 (+52.8%). The stock is fairly positioned - fine to hold existing positions or accumulate slowly on dips, but not an urgent buy.
Quick Decision Summary
Current Position
EXTENDED
Historical Trading Range
$22.76 -
$25.40
Company Quality Score
57/100
(HOLD)
Volume Confirmation
HIGH
Confidence Score
57.9%
All Signals
- BEARISH: Price significantly overextended (+10.2% above its trading range)
- BULLISH: Strong technical setup (60/100)
- BULLISH: High volume confirmation
- BULLISH: Strong upward momentum (+4.5%)
- BULLISH: Trading 52.8% below Wall St target ($42.78)
Trading Range Analysis
30-Day Trading Range
$22.76 -
$25.40
Current vs Trading Range
EXTENDED
Support & Resistance Levels
Support Level
$23.25
Resistance Level
$30.81
Current Trend
Sideways
Technical data as of
Jul 31, 2026
Fundamental Context
Forward P/E (Next Year Est.)
-29.27
Wall Street Target
$42.78
(+52.8%)
Revenue Growth (YoY)
-4.9%
Earnings Growth (YoY)
-51.6%
Profit Margin
-3.8%
Share & Embed Analysis
Last updated: August 02, 2026 8:35 PM ET
Data refreshes hourly during market hours. Next update: 9:35 PM
Data refreshes hourly during market hours. Next update: 9:35 PM
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Technical Signals Check
Is CSTL showing a specific setup today?
Insider Activity (6 Months)
0
Buys
11
Sells
Net
INSIDERS SELLING
Recent Transactions
Derek J Maetzold
SELL
3622 shares
2026-04-21
Derek J Maetzold
SELL
550 shares
2026-04-21
Derek J Maetzold
SELL
6214 shares
2026-04-06
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