CSTL
Castle Biosciences IncNASDAQ
Healthcare • Diagnostics & Research
Updated 1 day ago
Coverage ready
Factor tilt: Anti-Quality Small Cap
$32.88+0.37%
Close Oct 13, 2026
- Market cap
- $999.52M
- 1 month
- -1.7%
- 3 months
- +36.9%
- 1 year
- +42.5%
- 52-week range
- $18.15$43.04
- Dividend
- No dividends on record
- Next-quarter EPS estimate
- -$0.35Quarter to Sep 30, 2026 · 9 analysts · revenue $92.36M
- Short interest
- 7.4% of float2M shares · settled Sep 30, 2026 · +5.3% since Sep 15, 2026 · FINRA
Fundamentals · trailing 12 months to Jun 30, 2026
- Revenue
- $357.28M
- Net income
- -$19.42M
- Free cash flow
- -$489K
- Book value
- $470.03M
- Total debt
- $36.65M
- P/E
- —
- Price / sales
- 2.8×
- Price / book
- 2.1×
- FCF yield
- 0.0%
- Net margin
- -5.4%
EODHD (TTM) · as of Oct 13, 2026
End-of-day close from stored market data, not a live quote.
Portfolio context
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Loading market dates
No upcoming ex-dividend date announced
No 8-K filings in the last 30 days.
Smart money context
Holder IQ: MEDIUM
28 top institutions tracked
as of 2026-Q2 (filed 2026-09-23)
Last 13F trend: distributing (light)
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Sentiment: bearish
Last trade: sell 7 days ago
Red flags: 1
Largest 13-F holders · Q2 2026
177 filers reported a long position in CSTL for Q2 2026. 13-F holdings are filed up to 45 days after the quarter ends.
| Holder | Value | Shares | Shares vs Q1 2026 |
|---|---|---|---|
| BlackRock, Inc. | $78.5M | 3.3M | +10.4% |
| RTW INVESTMENTS, LP | $66.3M | 2.8M | +0.7% |
| PRINCIPAL FINANCIAL GROUP INC | $41.2M | 1.7M | -2.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | $29.3M | 1.2M | +4.2% |
| ACADIAN ASSET MANAGEMENT LLC | $21.9M | 918.7K | +89.6% |
| Allianz Asset Management GmbH | $21M | 879.3K | +8.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $20.1M | 840.8K | -2.4% |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $19.7M | 824.9K | -12.3% |
| STATE STREET CORP | $19.6M | 822.1K | +6.9% |
| GEODE CAPITAL MANAGEMENT, LLC | $19M | 795.9K | +9.3% |
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