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, Q2 2025
Institutional positions in Castle Biosciences Inc as of Jun 30, 2025. 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
- 152
- −26 vs. Q1 2025
- Shares held
- 26.5M
- +744.7K (+2.9%) vs. Q1 2025
- Total value
- $541.8M
- +$27.1M (+5.3%) vs. Q1 2025
- New holders
- 16
- 69 more added
- Sold out
- 42
- 45 more reduced
2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 10,713 | $219.0K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 10,573 | $215.0K | 0.00% | +1,486+16.4% | Added |
| Manufacturers Life Insurance Company, The | 10,316 | $210.7K | 0.00% | +10,316 | New |
| Lido Advisors, LLC | 10,031 | $204.8K | 0.00% | 00.0% | Unchanged |
| Mount Yale Investment Advisors, LLC | 8,362 | $170.8K | 0.01% | +8,362 | New |
| Police & Firemen's Retirement System of New Jersey | 5,837 | $119.2K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 5,799 | $118.4K | 0.01% | +80+1.4% | Added |
| KLP Kapitalforvaltning AS | 4,800 | $98.0K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 4,547 | $92.8K | 0.00% | +567+14.2% | Added |
| Harbour Investments, Inc. | 2,987 | $61.0K | 0.00% | +487+19.5% | Added |
| Ameritas Investment Partners, Inc. | 2,900 | $59.2K | 0.00% | +450+18.4% | Added |
| Tower Research Capital LLC (TRC) | 2,791 | $57.0K | 0.00% | +2,009+256.9% | Added |
| Covestor Ltd | 2,380 | $49.0K | 0.03% | +1,161+95.2% | Added |
| Quest Partners LLC | 2,095 | $42.8K | 0.00% | −3,913−65.1% | Reduced |
| First Horizon Advisors, Inc. | 1,792 | $36.6K | 0.00% | −18−1.0% | Reduced |
| Russell Investments Group, Ltd. | 1,532 | $31.3K | 0.00% | −17,137−91.8% | Reduced |
| Global Retirement Partners, LLC | 1,163 | $23.7K | 0.00% | +1,163 | New |
| Mirae Asset Global Investments Co., Ltd. | 1,115 | $22.8K | 0.00% | +183+19.6% | Added |
| CWM, LLC | 1,058 | $22.0K | 0.00% | −3,084−74.5% | Reduced |
| Amalgamated Bank | 893 | $18.0K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 767 | $15.7K | 0.00% | +451+142.7% | Added |
| GF Fund Management Co. Ltd. | 716 | $14.6K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 662 | $13.5K | 0.00% | +662 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 428 | $9.00K | 0.00% | +428 | New |
| Hughes Financial Services, LLC | 435 | $8.60K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 320 | $6.53K | 0.00% | −16−4.8% | Reduced |
| Huntington National Bank | 197 | $4.02K | 0.00% | +196+19,600.0% | Added |
| Advisor Group Holdings, Inc. | 199 | $4.01K | 0.00% | −3−1.5% | Reduced |
| Rossby Financial, LCC | 142 | $2.90K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 132 | $2.69K | 0.00% | −86−39.4% | Reduced |
| Versant Capital Management, Inc | 126 | $2.57K | 0.00% | +126 | New |
| The PNC Financial Services Group, Inc. | 110 | $2.25K | 0.00% | −10−8.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 106 | $2.17K | 0.00% | −50−32.1% | Reduced |
| Daiwa Securities Group Inc. | 86 | $2.00K | 0.00% | 00.0% | Unchanged |
| BFSG, LLC | 90 | $1.84K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 85 | $1.74K | 0.00% | +65+325.0% | Added |
| Principal Securities, Inc. | 76 | $1.55K | 0.00% | −14−15.6% | Reduced |
| IFP Advisors, Inc | 36 | $1.27K | 0.00% | +36 | New |
| SBI Securities Co., Ltd. | 50 | $1.02K | 0.00% | −8−13.8% | Reduced |
| Spire Wealth Management | 50 | $1.02K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 72 | $1.00K | 0.00% | −4,856−98.5% | Reduced |
| EverSource Wealth Advisors, LLC | 47 | $960 | 0.00% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 46 | $939 | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 45 | $919 | 0.00% | +45 | New |
| Parkside Financial Bank & Trust | 25 | $511 | 0.00% | +5+25.0% | Added |
| Jones Financial Companies LLLP | 25 | $509 | 0.00% | 00.0% | Unchanged |
| Missouri Trust & Investment Co | 19 | $388 | 0.00% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 11 | $225 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 5 | $103 | 0.00% | +5 | New |
| Stephens Consulting, LLC | 2 | $41 | 0.00% | +2 | New |
| Farther Finance Advisors, LLC | 1 | $20 | 0.00% | −4−80.0% | Reduced |
| Twin Peaks Wealth Advisors, LLC | 1 | $19 | 0.00% | +1 | New |
| Park West Asset Management LLC | 0 | $0 | 0.00% | −556,485−100.0% | Sold out |
| Bellevue Group AG | 0 | $0 | 0.00% | −301,103−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −237,698−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −236,218−100.0% | Sold out |
| Shelton Capital Management | 0 | $0 | 0.00% | −164,008−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −77,563−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −67,143−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −57,094−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −51,855−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −45,849−100.0% | Sold out |
| ABG Innovation Capital Partners III GP Ltd | 0 | $0 | 0.00% | −36,747−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −33,970−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −30,676−100.0% | Sold out |
| TownSquare Capital, LLC | 0 | $0 | 0.00% | −23,772−100.0% | Sold out |
| Fan Yu | 0 | $0 | 0.00% | −22,503−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −21,299−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −21,235−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −21,138−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −21,000−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −20,432−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −19,730−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −19,439−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −16,802−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −16,440−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −15,287−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −14,514−100.0% | Sold out |
| Mach-1 Financial Group, Inc. | 0 | $0 | 0.00% | −13,313−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −12,869−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −12,866−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −11,226−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −10,383−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −4,137−100.0% | Sold out |
| C M Bidwell & Associates Ltd | 0 | $0 | 0.00% | −3,180−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −2,400−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −1,773−100.0% | Sold out |
| Arcadia Investment Management Corp | 0 | $0 | 0.00% | −904−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −342−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −201−100.0% | Sold out |
| Massmutual Trust Co FSB | 0 | $0 | 0.00% | −51−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −97−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −31−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Orion Portfolio Solutions, LLC | – | – | – | – | Not filed |
| Lindbrook Capital, LLC | – | – | – | – | Not filed |