Equity Profile

CSTL

Castle Biosciences, Inc.

Health CareHealth Care Services$639.4M

Aug3Mon

Pre-Earnings Brief

UpcomingQ2-2026After Close5:00 PM EDT

Company Snapshot

Castle Biosciences, Inc. is a healthcare company focused on providing innovative diagnostic tests to improve patient outcomes....

Key Metrics to Watch

Earnings Per Share (EPS)

EPS is a key indicator of the company's profitability and financial health, which investors closely watch.

N/A

Revenue Growth

Revenue growth indicates the company's ability to expand its market presence and improve its financial performance.

N/A

Wall Street expectations, options signals, track record, and call prep available with Pro.

CSTL Q2-2026 Earnings Preview

Context

Company Snapshot

Castle Biosciences, Inc. is a healthcare company focused on providing innovative diagnostic tests to improve patient outcomes. With a market cap of $1 billion, it plays a vital role in the health care services sector, particularly in personalized medicine and cancer diagnostics.

Earnings Scorecard·Last 8Q

EPS Beat Streak

EPS Beat Rate

88%

Avg EPS Surprise

+1.24%

Avg Stock Reaction

+0.50%

Last Quarter Recap

In Q1 2026, Castle Biosciences reported an EPS of -$0.49, which was better than analysts' expectations of -$0.56, marking a 12.5% surprise. The stock saw a slight increase of 0.61% the following day.

Management Promises & Guidance

Expectations

Wall Street Expectations

Overall expectations for Castle Biosciences are mixed, with a focus on whether they can continue to beat EPS estimates as they have in recent quarters.

Bull Case

If Castle can maintain or improve its EPS surprise trend, it could signal strong operational performance and investor confidence, potentially driving the stock higher.

Bear Case

Conversely, if the company fails to meet expectations or shows signs of slowing growth, it could lead to a significant drop in stock price.

Expectations

Two Questions That Matter

The print will turn on these two things.

Will Castle Biosciences achieve a positive EPS this quarter?

A positive EPS could reinforce investor confidence and support the stock price, while a negative EPS could raise concerns about profitability.

What are the company's plans for revenue growth in the upcoming quarters?

Clear guidance on revenue growth will be critical for investors to assess the company's future performance and market position.

Edge

What the Street Is Missing

Why consensus could be wrong

The Street may underestimate Castle's ability to continue its EPS surprise trend, as recent performance has shown a consistent ability to beat estimates.

Supporting Evidence

Castle has an 88% EPS beat rate over the last eight quarters, indicating strong operational performance.

The options market is pricing a significant move, suggesting that investors expect volatility that may not align with consensus estimates.

Key Risk

If the company reports an EPS significantly better than expected, it could challenge the current bearish sentiment.

Edge

Thesis-Break Levels

Pre-commit to what would confirm each case.

This quarter's performance will hinge on the company's ability to meet or exceed EPS expectations and provide a clear growth strategy.

Bull Confirmed If

Achieving an EPS of $0.00 or better would confirm the bull case and indicate strong operational performance.

Bear Confirmed If

An EPS of -$0.60 or worse would confirm the bear case and raise concerns about the company's financial health.

Pre-Earnings Positioning

Options Market

Implied Move

±29.41%

Historical Avg

±2.5%

Pricing rich

The options market is pricing in a significant potential move, indicating heightened uncertainty or expectations for volatility around the earnings report.

Options are pricing ±29.4% while CSTL has averaged ±2.5% over the last 8 prints — setup is pricing rich.

Detail

ATM IV

0.6%

30d HV

88.6%

Calls (300)P/C Ratio: 1.00Puts (0)

Edge

Historical Setup Match

Cross-company pattern from 30 similar setups.

Prior-quarter beat + options rich in Health Care

n=30

Fade rate: 13 of 29 (45%)

This setup has occurred 30 times across Health Care in the last 2 years. 13 of 29 faded and 16 held — no strong directional bias after the initial reaction. The average absolute 1-day move is 5.5%, with a raw directional average of +2.9% (modestly positive historical bias).

Edge

Insider Activity

Open-market trades by officers, directors, and 10%+ holders over the trailing 90 days.

Bought

$0.00

0 sh

0 insiders

Sold

$104,708.86

4,172 sh

1 insider

Net

$104,708.86

Net selling

Most Active Insiders· 7 open-market trades

Pres. & Chief Exec. OfficerMAETZOLD DEREK J
$104,708.86

Preparation

Post-Print Playbook

Likely market behavior by outcome — not investment advice.

Beat & Raise

If Castle beats expectations, history suggests the stock could rise by around 1.02%, confirming positive market sentiment.

In-Line / Cautious

If results are in line with expectations but management is cautious, the stock may see muted movement as investors digest the commentary.

Miss

If the company misses expectations, history suggests a potential drop of about 3.10%, indicating investor disappointment.

Earnings Track Record

Preparation

What to Listen For

Call Prep

1Any updates on new product launches or diagnostic tests.
2Management's outlook on revenue growth for the next quarter.
3Details on cost management strategies and their impact on profitability.
4Insights into market demand for their services and products.
5Any commentary on competitive pressures in the healthcare diagnostics space.

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AI-powered briefs, options data, and 20 quarters of history — everything you need before earnings.

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Company Snapshot

Castle Biosciences, Inc. is a healthcare company focused on providing innovative diagnostic tests to improve patient outcomes....

Key Metrics to Watch

Earnings Per Share (EPS)

EPS is a key indicator of the company's profitability and financial health, which investors closely watch.

N/A

Revenue Growth

Revenue growth indicates the company's ability to expand its market presence and improve its financial performance.

N/A

Wall Street expectations, options signals, track record, and call prep available with Pro.

CSTL Q2-2026 Earnings Preview

Context

Company Snapshot

Earnings Scorecard·Last 8Q

EPS Beat Streak

EPS Beat Rate

88%

Avg EPS Surprise

+1.24%

Avg Stock Reaction

+0.50%

Last Quarter Recap

In Q1 2026, Castle Biosciences reported an EPS of -$0.49, which was better than analysts' expectations of -$0.56, marking a 12.5% surprise. The stock saw a slight increase of 0.61% the following day.

Management Promises & Guidance

Expectations

Wall Street Expectations

Overall expectations for Castle Biosciences are mixed, with a focus on whether they can continue to beat EPS estimates as they have in recent quarters.

Bull Case

If Castle can maintain or improve its EPS surprise trend, it could signal strong operational performance and investor confidence, potentially driving the stock higher.

Bear Case

Conversely, if the company fails to meet expectations or shows signs of slowing growth, it could lead to a significant drop in stock price.

Expectations

Two Questions That Matter

The print will turn on these two things.

Will Castle Biosciences achieve a positive EPS this quarter?

A positive EPS could reinforce investor confidence and support the stock price, while a negative EPS could raise concerns about profitability.

What are the company's plans for revenue growth in the upcoming quarters?

Clear guidance on revenue growth will be critical for investors to assess the company's future performance and market position.

Edge

What the Street Is Missing

Why consensus could be wrong

The Street may underestimate Castle's ability to continue its EPS surprise trend, as recent performance has shown a consistent ability to beat estimates.

Supporting Evidence

Castle has an 88% EPS beat rate over the last eight quarters, indicating strong operational performance.

The options market is pricing a significant move, suggesting that investors expect volatility that may not align with consensus estimates.

Key Risk

If the company reports an EPS significantly better than expected, it could challenge the current bearish sentiment.

Edge

Thesis-Break Levels

Pre-commit to what would confirm each case.

This quarter's performance will hinge on the company's ability to meet or exceed EPS expectations and provide a clear growth strategy.

Bull Confirmed If

Achieving an EPS of $0.00 or better would confirm the bull case and indicate strong operational performance.

Bear Confirmed If

An EPS of -$0.60 or worse would confirm the bear case and raise concerns about the company's financial health.

Pre-Earnings Positioning

Options Market

Implied Move

±29.41%

Historical Avg

±2.5%

Pricing rich

The options market is pricing in a significant potential move, indicating heightened uncertainty or expectations for volatility around the earnings report.

Options are pricing ±29.4% while CSTL has averaged ±2.5% over the last 8 prints — setup is pricing rich.

Detail

ATM IV

0.6%

30d HV

88.6%

Calls (300)P/C Ratio: 1.00Puts (0)

Edge

Historical Setup Match

Cross-company pattern from 30 similar setups.

Prior-quarter beat + options rich in Health Care

n=30

Fade rate: 13 of 29 (45%)

Edge

Insider Activity

Open-market trades by officers, directors, and 10%+ holders over the trailing 90 days.

Bought

$0.00

0 sh

0 insiders

Sold

$104,708.86

4,172 sh

1 insider

Net

$104,708.86

Net selling

Most Active Insiders· 7 open-market trades

Pres. & Chief Exec. OfficerMAETZOLD DEREK J
$104,708.86

Preparation

Post-Print Playbook

Likely market behavior by outcome — not investment advice.

Beat & Raise

If Castle beats expectations, history suggests the stock could rise by around 1.02%, confirming positive market sentiment.

In-Line / Cautious

If results are in line with expectations but management is cautious, the stock may see muted movement as investors digest the commentary.

Miss

If the company misses expectations, history suggests a potential drop of about 3.10%, indicating investor disappointment.

Earnings Track Record

Preparation

What to Listen For

Call Prep

1Any updates on new product launches or diagnostic tests.
2Management's outlook on revenue growth for the next quarter.
3Details on cost management strategies and their impact on profitability.
4Insights into market demand for their services and products.
5Any commentary on competitive pressures in the healthcare diagnostics space.