Health Care · Services-Medical Laboratories · Nasdaq · CIK 1447362 · FYE Dec 31 · Prices AT CLOSE 2026-08-19 (USD) Last $32.32 · Day +11.33% · Mkt cap $887M · 1Y +62.4% · Off 52W high −27.0% · Vol (1Y) 57.3% Price2023-08-21 → 2026-08-19 CSTL close: $17.9 on 2023-08-21 to $32.3 on 2026-08-19. Split-adj closes · 240 of 1,774 · price returnⓘ At a glance | Short interest5.1% of sh out | | Days to cover3.2d | | 13F net flow (QoQ)+2.42% | | Top-10 13F concentration52.4% | | Next report (est.)2026-10-29 |
SI 2026-07-31 · 13F 2026-Q1ⓘ Key fundamentalsFY 2025 | Sales (TTM)$357.3M | | Earnings (TTM)-$19.4M | | ROE−5.2% | | Net margin−7.0% | | Debt / equity0.02× | | Sales growth 3Y35.9% |
FY ratios · TTM sales/earnings (USD)ⓘ Trailing returns | YTD−16.9% | | 1Y+62.4% | | 3Y+80.4% | | 5Y−47.8% | | Since incept. (ann.)+6.0% |
Total return · from 2019-07-25ⓘ Risk | Ann. volatility (1Y)57.3% | | Ann. volatility (3Y)60.8% | | Sharpe (1Y)1.09 | | Sharpe (3Y)0.64 | | Max drawdown (1Y)−57.8% | | Max drawdown (3Y)−57.8% | | Beta (3Y vs SPY)0.92 |
Daily returns, ann.ⓘ Top institutional holders13F 2026-Q1 | Manager | Shares | Value | % sh out | QoQ |
|---|
| BlackRock, Inc. | 3.0M | $73M | 10.03% | −3.9% | | RTW INVESTMENTS, LP | 2.8M | $68M | 9.28% | +30.4% | | PRINCIPAL FINANCIAL GROUP INC | 1.8M | $43M | 5.95% | −2.1% | | Portolan Capital Management, LLC | 1.4M | $33M | 4.54% | −21.9% | | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $29M | 3.96% | new | | DIMENSIONAL FUND ADVISORS LP | 1.0M | $26M | 3.50% | −9.1% | | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 940,685 | $23M | 3.16% | −11.1% | | VANGUARD PORTFOLIO MANAGEMENT LLC | 861,771 | $21M | 2.90% | new |
Δ vs 2025-Q4ⓘ Latest reported quarterslast report 2026-07-30 | Period end | Reported | EPS | EPS YoY | Revenue | Rev YoY |
|---|
| 2026-06-30 | 2026-07-30 | −$0.07 | −146.7% | $103.5M | +20.1% | | 2026-03-31 | 2026-05-06 | −$0.49 | — | $83.7M | −4.9% | | 2025-12-31 | 2026-02-26 | — | — | $87.0M | +0.8% | | 2025-09-30 | 2025-11-03 | −$0.02 | −125.0% | $83.0M | −3.2% |
As-reported XBRL · next 2026-10-29 est.ⓘ Segment mixFY2025 (ended Dec 2025) Reportable 100% business · TAGGED revenueⓘ Basis & disclosures - EOD closes · nothing imputed or averaged · absent “—”
- As-of differs by block · 13F = US long, 45+d lag, LOWER bound
- Not investment advice · no recommendation, price target or solicitation
- EDGAR + foreign registers · marketstack (licensed EOD) · spzco.com/methodology
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