# CASTLE BIOSCIENCES INC (CSTL)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CSTL/

- Reporting holders: 5
- Reported value: $563.2K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Green Alpha Advisors, LLC](https://holderbook.com/funds/1439207-green-alpha-advisors-llc/) | $491.3K | 13,828 | 0.3% | 5 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $58.0K | 1,632 | 0.0% | 12 |
| [GK Wealth Management LLC](https://holderbook.com/funds/2069222-gk-wealth-management-llc/) | $7.6K | 214 | 0.0% | 1 |
| [Versant Capital Management, Inc](https://holderbook.com/funds/1735057-versant-capital-management-inc/) | $5.5K | 154 | 0.0% | 6 |
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $782 | 22 | 0.0% | 12 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 5 | $563.2K |
| Q2 2026 | 180 | $706.7M |
| Q1 2026 | 188 | $681.3M |
| Q4 2025 | 198 | $1.1B |
| Q3 2025 | 173 | $611.5M |
| Q2 2025 | 154 | $546.3M |
| Q1 2025 | 180 | $520.6M |
| Q4 2024 | 200 | $718.6M |
| Q3 2024 | 187 | $753.7M |
| Q2 2024 | 160 | $567.8M |
| Q1 2024 | 151 | $592.9M |
| Q4 2023 | 152 | $529.9M |