Nasdaq · Common stock
Castle Biosciences (CSTL)
$33.30 +$0.22 (+0.67%)
- Day’s range
- $32.84–$33.78
- Volume
- 235,841
CSTL price history
CSTL closed at $33.30 on Oct. 26, 2026. Over the past year, its daily close ranged from $18.15 on May 13, 2026 to $43.04 on Jan. 26, 2026.
Data table: CSTL daily closes, the past year
| Date | Close |
|---|---|
| Oct. 26, 2026 | $33.30 |
| Oct. 23, 2026 | $33.08 |
| Oct. 22, 2026 | $33.19 |
| Oct. 21, 2026 | $34.37 |
| Oct. 20, 2026 | $33.15 |
| Oct. 19, 2026 | $32.17 |
| Oct. 16, 2026 | $31.96 |
| Oct. 15, 2026 | $33.80 |
| Oct. 14, 2026 | $33.11 |
| Oct. 13, 2026 | $32.88 |
| Oct. 12, 2026 | $32.76 |
| Oct. 9, 2026 | $34.42 |
| Oct. 8, 2026 | $33.71 |
| Oct. 7, 2026 | $33.00 |
| Oct. 6, 2026 | $33.36 |
| Oct. 5, 2026 | $36.65 |
| Oct. 2, 2026 | $35.56 |
| Oct. 1, 2026 | $35.26 |
| Sept. 30, 2026 | $35.53 |
| Sept. 29, 2026 | $34.88 |
| Sept. 28, 2026 | $35.93 |
| Sept. 25, 2026 | $35.81 |
| Sept. 24, 2026 | $35.19 |
| Sept. 23, 2026 | $34.88 |
| Sept. 22, 2026 | $34.85 |
| Sept. 21, 2026 | $34.99 |
| Sept. 18, 2026 | $35.34 |
| Sept. 17, 2026 | $36.78 |
| Sept. 16, 2026 | $35.48 |
| Sept. 15, 2026 | $35.50 |
| Sept. 14, 2026 | $33.44 |
| Sept. 11, 2026 | $32.33 |
| Sept. 10, 2026 | $32.32 |
| Sept. 9, 2026 | $32.31 |
| Sept. 8, 2026 | $32.76 |
| Sept. 4, 2026 | $32.91 |
| Sept. 3, 2026 | $32.65 |
| Sept. 2, 2026 | $33.42 |
| Sept. 1, 2026 | $33.44 |
| Aug. 31, 2026 | $33.03 |
| Aug. 28, 2026 | $33.50 |
| Aug. 27, 2026 | $34.26 |
| Aug. 26, 2026 | $34.08 |
| Aug. 25, 2026 | $35.00 |
| Aug. 24, 2026 | $33.47 |
| Aug. 21, 2026 | $34.20 |
| Aug. 20, 2026 | $32.93 |
| Aug. 19, 2026 | $32.32 |
| Aug. 18, 2026 | $29.03 |
| Aug. 17, 2026 | $29.95 |
| Aug. 14, 2026 | $29.62 |
| Aug. 13, 2026 | $30.55 |
| Aug. 12, 2026 | $31.43 |
| Aug. 11, 2026 | $32.24 |
| Aug. 10, 2026 | $32.35 |
| Aug. 7, 2026 | $32.03 |
| Aug. 6, 2026 | $30.47 |
| Aug. 5, 2026 | $30.40 |
| Aug. 4, 2026 | $31.18 |
| Aug. 3, 2026 | $30.39 |
| July 31, 2026 | $28.00 |
| July 30, 2026 | $26.79 |
| July 29, 2026 | $24.46 |
| July 28, 2026 | $23.89 |
| July 27, 2026 | $24.44 |
| July 24, 2026 | $24.69 |
| July 23, 2026 | $25.48 |
| July 22, 2026 | $24.81 |
| July 21, 2026 | $24.51 |
| July 20, 2026 | $23.90 |
| July 17, 2026 | $24.16 |
| July 16, 2026 | $24.23 |
| July 15, 2026 | $24.02 |
| July 14, 2026 | $23.12 |
| July 13, 2026 | $22.98 |
| July 10, 2026 | $23.72 |
| July 9, 2026 | $24.56 |
| July 8, 2026 | $23.64 |
| July 7, 2026 | $23.83 |
| July 6, 2026 | $24.21 |
| July 2, 2026 | $24.11 |
| July 1, 2026 | $24.71 |
| June 30, 2026 | $23.85 |
| June 29, 2026 | $24.32 |
| June 26, 2026 | $24.30 |
| June 25, 2026 | $22.91 |
| June 24, 2026 | $22.12 |
| June 23, 2026 | $21.38 |
| June 22, 2026 | $21.20 |
| June 18, 2026 | $21.12 |
| June 17, 2026 | $20.25 |
| June 16, 2026 | $20.46 |
| June 15, 2026 | $20.66 |
| June 12, 2026 | $20.70 |
| June 11, 2026 | $21.01 |
| June 10, 2026 | $21.08 |
| June 9, 2026 | $21.08 |
| June 8, 2026 | $20.12 |
| June 5, 2026 | $21.01 |
| June 4, 2026 | $21.60 |
| June 3, 2026 | $20.39 |
| June 2, 2026 | $19.71 |
| June 1, 2026 | $20.97 |
| May 29, 2026 | $21.08 |
| May 28, 2026 | $22.11 |
| May 27, 2026 | $21.26 |
| May 26, 2026 | $19.69 |
| May 22, 2026 | $20.15 |
| May 21, 2026 | $20.54 |
| May 20, 2026 | $20.03 |
| May 19, 2026 | $19.20 |
| May 18, 2026 | $19.32 |
| May 15, 2026 | $19.13 |
| May 14, 2026 | $18.88 |
| May 13, 2026 | $18.15 |
| May 12, 2026 | $18.63 |
| May 11, 2026 | $19.04 |
| May 8, 2026 | $19.83 |
| May 7, 2026 | $19.24 |
| May 6, 2026 | $24.75 |
| May 5, 2026 | $24.60 |
| May 4, 2026 | $25.52 |
| May 1, 2026 | $24.81 |
| April 30, 2026 | $24.49 |
| April 29, 2026 | $24.24 |
| April 28, 2026 | $24.69 |
| April 27, 2026 | $24.98 |
| April 24, 2026 | $24.46 |
| April 23, 2026 | $23.69 |
| April 22, 2026 | $25.10 |
| April 21, 2026 | $24.58 |
| April 20, 2026 | $25.16 |
| April 17, 2026 | $25.05 |
| April 16, 2026 | $24.56 |
| April 15, 2026 | $24.62 |
| April 14, 2026 | $24.37 |
| April 13, 2026 | $23.53 |
| April 10, 2026 | $23.13 |
| April 9, 2026 | $23.43 |
| April 8, 2026 | $25.19 |
| April 7, 2026 | $24.83 |
| April 6, 2026 | $24.73 |
| April 2, 2026 | $24.84 |
| April 1, 2026 | $25.05 |
| March 31, 2026 | $24.55 |
| March 30, 2026 | $23.55 |
| March 27, 2026 | $23.53 |
| March 26, 2026 | $24.70 |
| March 25, 2026 | $25.27 |
| March 24, 2026 | $25.35 |
| March 23, 2026 | $25.75 |
| March 20, 2026 | $25.00 |
| March 19, 2026 | $25.70 |
| March 18, 2026 | $25.62 |
| March 17, 2026 | $25.90 |
| March 16, 2026 | $25.83 |
| March 13, 2026 | $25.56 |
| March 12, 2026 | $25.32 |
| March 11, 2026 | $26.13 |
| March 10, 2026 | $26.60 |
| March 9, 2026 | $27.02 |
| March 6, 2026 | $27.12 |
| March 5, 2026 | $27.91 |
| March 4, 2026 | $28.17 |
| March 3, 2026 | $27.57 |
| March 2, 2026 | $27.99 |
| Feb. 27, 2026 | $29.57 |
| Feb. 26, 2026 | $31.88 |
| Feb. 25, 2026 | $30.83 |
| Feb. 24, 2026 | $29.94 |
| Feb. 23, 2026 | $28.94 |
| Feb. 20, 2026 | $29.21 |
| Feb. 19, 2026 | $31.34 |
| Feb. 18, 2026 | $33.67 |
| Feb. 17, 2026 | $33.42 |
| Feb. 13, 2026 | $33.15 |
| Feb. 12, 2026 | $31.90 |
| Feb. 11, 2026 | $32.34 |
| Feb. 10, 2026 | $32.37 |
| Feb. 9, 2026 | $32.23 |
| Feb. 6, 2026 | $32.75 |
| Feb. 5, 2026 | $32.40 |
| Feb. 4, 2026 | $34.96 |
| Feb. 3, 2026 | $38.94 |
| Feb. 2, 2026 | $39.47 |
| Jan. 30, 2026 | $39.39 |
| Jan. 29, 2026 | $39.16 |
| Jan. 28, 2026 | $39.51 |
| Jan. 27, 2026 | $42.84 |
| Jan. 26, 2026 | $43.04 |
| Jan. 23, 2026 | $42.24 |
| Jan. 22, 2026 | $42.15 |
| Jan. 21, 2026 | $40.98 |
| Jan. 20, 2026 | $40.86 |
| Jan. 16, 2026 | $40.01 |
| Jan. 15, 2026 | $40.75 |
| Jan. 14, 2026 | $40.77 |
| Jan. 13, 2026 | $39.64 |
| Jan. 12, 2026 | $39.66 |
| Jan. 9, 2026 | $39.34 |
| Jan. 8, 2026 | $39.89 |
| Jan. 7, 2026 | $40.61 |
| Jan. 6, 2026 | $40.07 |
| Jan. 5, 2026 | $39.00 |
| Jan. 2, 2026 | $38.54 |
| Dec. 31, 2025 | $38.90 |
| Dec. 30, 2025 | $39.31 |
| Dec. 29, 2025 | $39.27 |
| Dec. 26, 2025 | $39.40 |
| Dec. 24, 2025 | $40.09 |
| Dec. 23, 2025 | $40.20 |
| Dec. 22, 2025 | $41.39 |
| Dec. 19, 2025 | $39.44 |
| Dec. 18, 2025 | $39.60 |
| Dec. 17, 2025 | $39.66 |
| Dec. 16, 2025 | $39.05 |
| Dec. 15, 2025 | $38.88 |
| Dec. 12, 2025 | $38.63 |
| Dec. 11, 2025 | $37.97 |
| Dec. 10, 2025 | $38.02 |
| Dec. 9, 2025 | $38.25 |
| Dec. 8, 2025 | $38.10 |
| Dec. 5, 2025 | $38.64 |
| Dec. 4, 2025 | $39.62 |
| Dec. 3, 2025 | $39.41 |
| Dec. 2, 2025 | $39.10 |
| Dec. 1, 2025 | $39.12 |
| Nov. 28, 2025 | $39.95 |
| Nov. 26, 2025 | $39.94 |
| Nov. 25, 2025 | $39.93 |
| Nov. 24, 2025 | $38.49 |
| Nov. 21, 2025 | $37.88 |
| Nov. 20, 2025 | $35.72 |
| Nov. 19, 2025 | $34.65 |
| Nov. 18, 2025 | $33.55 |
| Nov. 17, 2025 | $33.95 |
| Nov. 14, 2025 | $33.45 |
| Nov. 13, 2025 | $34.12 |
| Nov. 12, 2025 | $34.82 |
| Nov. 11, 2025 | $34.97 |
| Nov. 10, 2025 | $34.74 |
| Nov. 7, 2025 | $33.04 |
| Nov. 6, 2025 | $33.55 |
| Nov. 5, 2025 | $33.57 |
| Nov. 4, 2025 | $31.63 |
| Nov. 3, 2025 | $25.99 |
| Oct. 31, 2025 | $25.50 |
| Oct. 30, 2025 | $24.21 |
| Oct. 29, 2025 | $23.74 |
| Oct. 28, 2025 | $24.15 |
| Oct. 27, 2025 | $23.96 |
Key figures
- 52-week range
- $18.15–$43.04Low May 13, 2026; high Jan. 26, 2026
- Average daily volume
- 399,335Past 3 months
- Market value
- $1.02B
- Dividend yield
- —
- From 52-week high
- −22.63%
Price change
- 1 month
- −7.01%
- 3 months
- +34.90%
- Year to date
- −14.40%
- 1 year
- +35.86%
$1,000 a year ago
$1,000 put into CSTL at the close on Oct. 24, 2025 would be worth $1,359.
Price only, dividends not included.
What Wall Street says about CSTL
In the past 90 days, Wall Street firms published 1 rating or price-target action on CSTL: 1 raised price target.
| Action | Rating | |||
|---|---|---|---|---|
| BTIG | Raises target | Buy | $40 to $44 |
Ratings and price targets are the firms’ own opinions, reported as published.
Not investment advice.
About Castle Biosciences, Inc. Common Stock
Castle Biosciences Inc is a molecular diagnostics company. The group provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), and uveal melanoma. The product portfolio of the company includes DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a test to predict future development of progression of high-grade dysplasia and/or esophageal cancer. The company derives revenues through the delivery of test reports for its molecular diagnostic tests.
- Headquarters
- Friendswood, Texas
- Employees
- 1,002
- Listed
- July 25, 2019
- Sector
- Health care
- Industry
- Services-medical laboratories
In WallStreetDigest editions
No WallStreetDigest article about CSTL is on the site yet.