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 |
|---|---|---|---|---|---|
| Twin Peaks Wealth Advisors, LLC | 1 | $19 | 0.00% | +1 | New |
| Farther Finance Advisors, LLC | 1 | $20 | 0.00% | −4−80.0% | Reduced |
| Stephens Consulting, LLC | 2 | $41 | 0.00% | +2 | New |
| Allworth Financial LP | 5 | $103 | 0.00% | +5 | New |
| Skopos Labs, Inc. | 11 | $225 | 0.00% | 00.0% | Unchanged |
| Missouri Trust & Investment Co | 19 | $388 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 25 | $509 | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 25 | $511 | 0.00% | +5+25.0% | Added |
| Signaturefd, LLC | 45 | $919 | 0.00% | +45 | New |
| Bryn Mawr Trust Co | 46 | $939 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 47 | $960 | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 72 | $1.00K | 0.00% | −4,856−98.5% | Reduced |
| SBI Securities Co., Ltd. | 50 | $1.02K | 0.00% | −8−13.8% | Reduced |
| Spire Wealth Management | 50 | $1.02K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 36 | $1.27K | 0.00% | +36 | New |
| Principal Securities, Inc. | 76 | $1.55K | 0.00% | −14−15.6% | Reduced |
| Rothschild Investment LLC | 85 | $1.74K | 0.00% | +65+325.0% | Added |
| BFSG, LLC | 90 | $1.84K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 86 | $2.00K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 106 | $2.17K | 0.00% | −50−32.1% | Reduced |
| The PNC Financial Services Group, Inc. | 110 | $2.25K | 0.00% | −10−8.3% | Reduced |
| Versant Capital Management, Inc | 126 | $2.57K | 0.00% | +126 | New |
| GAMMA Investing LLC | 132 | $2.69K | 0.00% | −86−39.4% | Reduced |
| Rossby Financial, LCC | 142 | $2.90K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 199 | $4.01K | 0.00% | −3−1.5% | Reduced |
| Huntington National Bank | 197 | $4.02K | 0.00% | +196+19,600.0% | Added |
| Nisa Investment Advisors, LLC | 320 | $6.53K | 0.00% | −16−4.8% | Reduced |
| Hughes Financial Services, LLC | 435 | $8.60K | 0.00% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 428 | $9.00K | 0.00% | +428 | New |
| Raymond James Financial Inc | 662 | $13.5K | 0.00% | +662 | New |
| GF Fund Management Co. Ltd. | 716 | $14.6K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 767 | $15.7K | 0.00% | +451+142.7% | Added |
| Amalgamated Bank | 893 | $18.0K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 1,058 | $22.0K | 0.00% | −3,084−74.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,115 | $22.8K | 0.00% | +183+19.6% | Added |
| Global Retirement Partners, LLC | 1,163 | $23.7K | 0.00% | +1,163 | New |
| Russell Investments Group, Ltd. | 1,532 | $31.3K | 0.00% | −17,137−91.8% | Reduced |
| First Horizon Advisors, Inc. | 1,792 | $36.6K | 0.00% | −18−1.0% | Reduced |
| Quest Partners LLC | 2,095 | $42.8K | 0.00% | −3,913−65.1% | Reduced |
| Covestor Ltd | 2,380 | $49.0K | 0.03% | +1,161+95.2% | Added |
| Tower Research Capital LLC (TRC) | 2,791 | $57.0K | 0.00% | +2,009+256.9% | Added |
| Ameritas Investment Partners, Inc. | 2,900 | $59.2K | 0.00% | +450+18.4% | Added |
| Harbour Investments, Inc. | 2,987 | $61.0K | 0.00% | +487+19.5% | Added |
| Assetmark, Inc | 4,547 | $92.8K | 0.00% | +567+14.2% | Added |
| KLP Kapitalforvaltning AS | 4,800 | $98.0K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 5,799 | $118.4K | 0.01% | +80+1.4% | Added |
| Police & Firemen's Retirement System of New Jersey | 5,837 | $119.2K | 0.00% | 00.0% | Unchanged |
| Mount Yale Investment Advisors, LLC | 8,362 | $170.8K | 0.01% | +8,362 | New |
| Lido Advisors, LLC | 10,031 | $204.8K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 10,316 | $210.7K | 0.00% | +10,316 | New |
| Royal Bank of Canada | 10,573 | $215.0K | 0.00% | +1,486+16.4% | Added |
| Great West Life Assurance Co | 10,713 | $219.0K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 11,111 | $226.9K | 0.00% | +11+0.1% | Added |
| Stephens Inc | 11,386 | $232.5K | 0.00% | −2,253−16.5% | Reduced |
| Diversify Wealth Management, LLC | 12,322 | $238.3K | 0.01% | −780−6.0% | Reduced |
| STRS Ohio | 11,700 | $238.9K | 0.00% | −6,600−36.1% | Reduced |
| Two Sigma Advisers, LP | 12,000 | $245.0K | 0.00% | −57,200−82.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 12,089 | $246.9K | 0.00% | +8+0.1% | Added |
| Intech Investment Management LLC | 12,289 | $250.9K | 0.00% | −3,789−23.6% | Reduced |
| Simon Quick Advisors, LLC | 13,562 | $276.9K | 0.01% | −33−0.2% | Reduced |
| Citigroup Inc | 14,072 | $287.4K | 0.00% | −48,629−77.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 15,561 | $317.8K | 0.00% | +120+0.8% | Added |
| Summit Global Investments | 15,649 | $320.0K | 0.02% | −14,991−48.9% | Reduced |
| MetLife Investment Management | 15,881 | $324.3K | 0.00% | +152+1.0% | Added |
| Advantage Alpha Capital Partners LP | 16,021 | $327.1K | 0.09% | −3,784−19.1% | Reduced |
| Oak Harvest Investment Services | 16,883 | $344.8K | 0.04% | 00.0% | Unchanged |
| HRT Financial LP | 18,826 | $384.0K | 0.00% | −9,459−33.4% | Reduced |
| CWM Advisors, LLC | 19,117 | $390.4K | 0.04% | +1,964+11.4% | Added |
| Aquatic Capital Management LLC | 19,280 | $393.7K | 0.01% | +19,280 | New |
| First Bank & Trust | 19,951 | $407.4K | 0.07% | +4,815+31.8% | Added |
| Wells Fargo & Company | 20,300 | $414.5K | 0.00% | +3,953+24.2% | Added |
| Harbor Capital Advisors, Inc. | 20,399 | $417.0K | 0.02% | +3,804+22.9% | Added |
| Jump Financial, LLC | 21,858 | $446.3K | 0.01% | +21,858 | New |
| FMR LLC | 24,000 | $490.1K | 0.00% | +22,844+1,976.1% | Added |
| Truist Financial Corp | 24,023 | $490.6K | 0.00% | +1,715+7.7% | Added |
| Mackenzie Financial Corp | 24,204 | $494.2K | 0.00% | −3,256−11.9% | Reduced |
| California State Teachers Retirement System | 24,620 | $502.7K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 26,407 | $540.0K | 0.00% | +2,702+11.4% | Added |
| JPMorgan Chase & Co | 26,663 | $544.5K | 0.00% | −3,914−12.8% | Reduced |
| Parallel Advisors, LLC | 27,893 | $569.6K | 0.01% | +300+1.1% | Added |
| Perkins Capital Management Inc | 27,995 | $571.7K | 0.57% | −5,970−17.6% | Reduced |
| Two Sigma Investments, LP | 28,241 | $576.7K | 0.00% | −111,544−79.8% | Reduced |
| SEI Investments Co | 31,130 | $635.7K | 0.00% | −41,929−57.4% | Reduced |
| Verition Fund Management LLC | 31,539 | $644.0K | 0.00% | +868+2.8% | Added |
| Alliancebernstein L.P. | 33,370 | $681.4K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 34,018 | $690.7K | 0.00% | +14,391+73.3% | Added |
| Legal & General Group Plc | 34,908 | $712.8K | 0.00% | +8,992+34.7% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 35,800 | $731.0K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 40,429 | $825.6K | 0.00% | +8,178+25.4% | Added |
| Bridgeway Capital Management, LLC | 40,750 | $832.1K | 0.02% | +40,750 | New |
| Empowered Funds, LLC | 40,750 | $832.1K | 0.01% | +40,750 | New |
| Tritonpoint Wealth, LLC | 40,777 | $832.7K | 0.08% | −860−2.1% | Reduced |
| Brevan Howard Capital Management LP | 41,301 | $843.4K | 0.01% | +29,096+238.4% | Added |
| Graham Capital Management, L.P. | 41,783 | $853.2K | 0.03% | −26,602−38.9% | Reduced |
| Susquehanna International Group, LLP | 42,853 | $875.1K | 0.00% | +6,952+19.4% | Added |
| Nebula Research & Development LLC | 44,472 | $908.1K | 0.08% | +6,855+18.2% | Added |
| Rhumbline Advisers | 45,397 | $927.0K | 0.00% | +6,211+15.9% | Added |
| XTX Topco Ltd | 46,301 | $945.5K | 0.04% | +26,673+135.9% | Added |
| AQR Capital Management LLC | 49,230 | $1.01M | 0.00% | −87,792−64.1% | Reduced |
| Swiss National Bank | 54,300 | $1.11M | 0.00% | 00.0% | Unchanged |