Castle Biosciences Inc
CSTL- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001447362
In the last 90 days, Castle Biosciences Inc insiders filed 0 open-market purchases and 20 sales; 176 institutions reported holding it in 13F filings for Q2 2026, worth $653.8M in total; no superinvestor holds it.
13F holders, Q3 2023
Institutional positions in Castle Biosciences Inc as of Sep 30, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 135
- +6 vs. Q2 2023
- Shares held
- 23.2M
- +181.5K (+0.8%) vs. Q2 2023
- Total value
- $391.0M
- +$74.4M (+23.5%) vs. Q2 2023
- New holders
- 22
- 52 more added
- Sold out
- 16
- 41 more reduced
1 institution that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CSTL on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 176 | $653.8M |
| Q1 2026 | 186 | $677.8M |
| Q4 2025 | 195 | $1.06B |
| Q3 2025 | 173 | $608.3M |
| Q2 2025 | 152 | $541.8M |
| Q1 2025 | 180 | $516.3M |
| Q4 2024 | 197 | $706.4M |
| Q3 2024 | 185 | $736.9M |
| Q2 2024 | 159 | $549.4M |
| Q1 2024 | 151 | $553.2M |
| Q4 2023 | 153 | $515.4M |
| Q3 2023 | 135 | $391.0M |
| Q2 2023 | 130 | $316.6M |
| Q1 2023 | 148 | $501.9M |
| Q4 2022 | 153 | $522.0M |
| Q3 2022 | 157 | $569.8M |
| Q2 2022 | 146 | $495.0M |
| Q1 2022 | 160 | $1.02B |
| Q4 2021 | 159 | $918.6M |
| Q3 2021 | 188 | $1.42B |
| Q2 2021 | 182 | $1.52B |
| Q1 2021 | 175 | $1.46B |
Institutions, Q3 2023
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Advisor Group Holdings, Inc. | 6,560 | $110.8K | 0.00% | +2,934+80.9% | Added |
| Wells Fargo & Company | 6,401 | $108.1K | 0.00% | −5,011−43.9% | Reduced |
| Royal Bank of Canada | 4,459 | $76.0K | 0.00% | +1,579+54.8% | Added |
| Assetmark, Inc | 3,904 | $65.9K | 0.00% | +994+34.2% | Added |
| Amalgamated Bank | 2,931 | $50.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 2,730 | $46.1K | 0.00% | −8,443−75.6% | Reduced |
| Ameritas Investment Partners, Inc. | 2,450 | $41.4K | 0.00% | +779+46.6% | Added |
| The PNC Financial Services Group, Inc. | 2,264 | $38.2K | 0.00% | −337−13.0% | Reduced |
| BluePath Capital Management, LLC | 1,811 | $30.6K | 0.03% | +1,811 | New |
| Metropolitan Life Insurance Co | 1,410 | $23.8K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 1,010 | $17.1K | 0.00% | +349+52.8% | Added |
| Tower Research Capital LLC (TRC) | 977 | $16.5K | 0.00% | −10−1.0% | Reduced |
| Nisa Investment Advisors, LLC | 857 | $14.5K | 0.00% | −163−16.0% | Reduced |
| State of Wyoming | 814 | $13.7K | 0.00% | +288+54.8% | Added |
| Ronald Blue Trust, Inc. | 956 | $13.0K | 0.00% | +956 | New |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 726 | $12.3K | 0.00% | +726 | New |
| Point72 Middle East FZE | 695 | $11.7K | 0.00% | −15,033−95.6% | Reduced |
| China Universal Asset Management Co., Ltd. | 689 | $11.6K | 0.00% | +339+96.9% | Added |
| Macroview Investment Management LLC | 581 | $9.81K | 0.01% | +581 | New |
| Allspring Global Investments Holdings, LLC | 550 | $9.29K | 0.00% | −377,837−99.9% | Reduced |
| Huntington National Bank | 364 | $6.15K | 0.00% | +6+1.7% | Added |
| US Bancorp | 278 | $4.70K | 0.00% | −1−0.4% | Reduced |
| Simplex Trading, LLC | 260 | $4.00K | 0.00% | +260 | New |
| Private Trust Co NA | 60 | $1.01K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 86 | $1.00K | 0.00% | 00.0% | Unchanged |
| Park Place Capital Corp | 53 | $895 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 41 | $693 | 0.00% | −33−44.6% | Reduced |
| Group One Trading, L.P. | 41 | $692 | 0.00% | +41 | New |
| Global Retirement Partners, LLC | 27 | $416 | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 21 | $355 | 0.00% | +21 | New |
| Missouri Trust & Investment Co | 19 | $321 | 0.00% | 00.0% | Unchanged |
| Tfo-TDC, LLC | 15 | $206 | 0.00% | +15 | New |
| SRS Capital Advisors, Inc. | 12 | $203 | 0.00% | 00.0% | Unchanged |
| Colonial Trust Advisors | 6 | $101 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 25 | $0 | 0.00% | +25 | New |
| First Light Asset Management, LLC | 0 | $0 | 0.00% | −160,126−100.0% | Sold out |
| Greenhouse Funds LLLP | 0 | $0 | 0.00% | −150,670−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −116,977−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −109,995−100.0% | Sold out |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −91,978−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −63,773−100.0% | Sold out |
| Fan Yu | 0 | $0 | 0.00% | −20,592−100.0% | Sold out |
| Isthmus Partners, LLC | 0 | $0 | 0.00% | −15,342−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −14,765−100.0% | Sold out |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −13,398−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −12,941−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −12,699−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −11,551−100.0% | Sold out |
| Bollard Group LLC | 0 | $0 | 0.00% | −139−100.0% | Sold out |
| Baystate Wealth Management LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| BerganKDV Wealth Management, LLC | – | – | – | – | Not filed |