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, Q1 2025
Institutional positions in Castle Biosciences Inc as of Mar 31, 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
- 180
- −14 vs. Q4 2024
- Shares held
- 25.9M
- −168.1K (−0.6%) vs. Q4 2024
- Total value
- $516.3M
- −$177.7M (−25.6%) vs. Q4 2024
- New holders
- 30
- 76 more added
- Sold out
- 44
- 54 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,983,540 | $59.7M | 0.00% | +62,231+2.1% | Added |
| Vanguard Group Inc | 2,047,565 | $41.0M | 0.00% | +215,030+11.7% | Added |
| Principal Financial Group Inc | 1,467,873 | $29.4M | 0.02% | +32,208+2.2% | Added |
| Portolan Capital Management, LLC | 1,265,223 | $25.3M | 1.93% | +488,644+62.9% | Added |
| Dimensional Fund Advisors LP | 1,200,222 | $24.0M | 0.01% | +200,756+20.1% | Added |
| Wasatch Advisors Inc | 998,455 | $20.0M | 0.11% | −797,633−44.4% | Reduced |
| Wellington Management Group LLP | 828,528 | $16.6M | 0.00% | +106,408+14.7% | Added |
| State Street Corp | 715,028 | $14.3M | 0.00% | +4,816+0.7% | Added |
| Renaissance Technologies LLC | 701,200 | $14.0M | 0.02% | +16,200+2.4% | Added |
| Acadian Asset Management LLC | 676,066 | $13.5M | 0.04% | +267,416+65.4% | Added |
| Geode Capital Management, LLC | 649,853 | $13.0M | 0.00% | +21,657+3.4% | Added |
| Allianz Asset Management GmbH | 639,477 | $12.8M | 0.02% | +317,103+98.4% | Added |
| Schroder Investment Management Group | 597,089 | $11.9M | 0.01% | +597,089 | New |
| Nuveen, LLC | 671,811 | $11.9M | 0.00% | +671,811 | New |
| Park West Asset Management LLC | 556,485 | $11.1M | 0.91% | +556,485 | New |
| Palisade Capital Management LLC | 489,968 | $9.81M | 0.28% | −13,474−2.7% | Reduced |
| Bank of America Corp | 375,380 | $7.52M | 0.00% | −28,173−7.0% | Reduced |
| Braidwell LP | 365,247 | $7.31M | 0.26% | +365,247 | New |
| Parkman Healthcare Partners LLC | 350,551 | $7.02M | 0.83% | +45,922+15.1% | Added |
| Ameriprise Financial Inc | 325,697 | $6.52M | 0.00% | +9,661+3.1% | Added |
| Bellevue Group AG | 301,103 | $6.03M | 0.14% | −444,879−59.6% | Reduced |
| Qube Research & Technologies Ltd | 279,364 | $5.59M | 0.01% | +61,820+28.4% | Added |
| Kornitzer Capital Management Inc | 278,314 | $5.57M | 0.11% | −105,660−27.5% | Reduced |
| Northern Trust Corp | 273,469 | $5.47M | 0.00% | −11,118−3.9% | Reduced |
| Citadel Advisors LLC | 258,382 | $5.17M | 0.01% | −576,130−69.0% | Reduced |
| Millennium Management LLC | 254,749 | $5.10M | 0.00% | −294,060−53.6% | Reduced |
| Trexquant Investment LP | 248,991 | $4.98M | 0.06% | +45,420+22.3% | Added |
| Charles Schwab Investment Management Inc | 242,258 | $4.85M | 0.00% | −16,608−6.4% | Reduced |
| Cubist Systematic Strategies, LLC | 237,698 | $4.76M | 0.06% | +60,161+33.9% | Added |
| Point72 Asset Management, L.P. | 236,218 | $4.73M | 0.01% | −310,886−56.8% | Reduced |
| Allspring Global Investments Holdings, LLC | 217,794 | $4.36M | 0.01% | +207,761+2,070.8% | Added |
| Morgan Stanley | 211,793 | $4.24M | 0.00% | −94,884−30.9% | Reduced |
| Advisors Capital Management, LLC | 201,687 | $4.04M | 0.06% | +22,752+12.7% | Added |
| Silvercrest Asset Management Group LLC | 198,802 | $3.98M | 0.03% | −1,148−0.6% | Reduced |
| D. E. Shaw & Co., Inc. | 189,177 | $3.79M | 0.00% | +98,614+108.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 176,889 | $3.54M | 0.02% | +8,176+4.8% | Added |
| Goldman Sachs Group Inc | 175,325 | $3.51M | 0.00% | −257,425−59.5% | Reduced |
| Tudor Investment Corp Et Al | 171,382 | $3.43M | 0.03% | +101,306+144.6% | Added |
| Shelton Capital Management | 164,008 | $3.28M | 0.08% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 163,159 | $3.27M | 0.00% | −25,942−13.7% | Reduced |
| Algert Global LLC | 144,311 | $2.89M | 0.07% | −5,180−3.5% | Reduced |
| Two Sigma Investments, LP | 139,785 | $2.80M | 0.01% | +139,785 | New |
| AQR Capital Management LLC | 137,022 | $2.74M | 0.00% | +115,907+548.9% | Added |
| Franklin Resources Inc | 99,086 | $1.98M | 0.00% | +25,449+34.6% | Added |
| Squarepoint Ops LLC | 97,360 | $1.95M | 0.00% | +80,043+462.2% | Added |
| Birchview Capital, LP | 88,404 | $1.77M | 1.54% | +10,404+13.3% | Added |
| Bank of New York Mellon Corp | 84,041 | $1.68M | 0.00% | −418−0.5% | Reduced |
| Brinker Capital Investments, LLC | 78,409 | $1.57M | 0.02% | +10,093+14.8% | Added |
| Orion Portfolio Solutions, LLC | 78,409 | $1.57M | 0.02% | +10,093+14.8% | Added |
| ExodusPoint Capital Management, LP | 77,563 | $1.55M | 0.02% | +66,079+575.4% | Added |
| American Century Companies Inc | 74,067 | $1.48M | 0.00% | +4,892+7.1% | Added |
| SEI Investments Co | 73,059 | $1.46M | 0.00% | +31,568+76.1% | Added |
| Envestnet Asset Management Inc | 69,771 | $1.40M | 0.00% | −3,573−4.9% | Reduced |
| Two Sigma Advisers, LP | 69,200 | $1.39M | 0.00% | +57,700+501.7% | Added |
| Graham Capital Management, L.P. | 68,385 | $1.37M | 0.04% | +26,709+64.1% | Added |
| UBS Asset Management Americas Inc | 68,031 | $1.36M | 0.00% | +2,013+3.0% | Added |
| Gsa Capital Partners LLP | 67,143 | $1.34M | 0.12% | −3,658−5.2% | Reduced |
| Deutsche Bank AG | 65,537 | $1.31M | 0.00% | −2,130−3.1% | Reduced |
| Citigroup Inc | 62,701 | $1.26M | 0.00% | +21,374+51.7% | Added |
| Schonfeld Strategic Advisors LLC | 59,671 | $1.19M | 0.01% | +44,371+290.0% | Added |
| Jackson Creek Investment Advisors LLC | 57,094 | $1.14M | 0.36% | +57,094 | New |
| Swiss National Bank | 54,300 | $1.09M | 0.00% | +3,000+5.8% | Added |
| Engineers Gate Manager LP | 52,923 | $1.06M | 0.02% | +34,201+182.7% | Added |
| Dark Forest Capital Management LP | 51,855 | $1.04M | 0.05% | +51,855 | New |
| UBS Group AG | 48,759 | $976.2K | 0.00% | −763,841−94.0% | Reduced |
| Campbell & CO Investment Adviser LLC | 45,849 | $917.9K | 0.07% | −471−1.0% | Reduced |
| BNP Paribas Arbitrage, SA | 45,230 | $905.5K | 0.00% | −203,898−81.8% | Reduced |
| Barclays PLC | 42,815 | $857.2K | 0.00% | −6,198−12.6% | Reduced |
| Tritonpoint Wealth, LLC | 41,637 | $833.6K | 0.08% | −5,000−10.7% | Reduced |
| Rhumbline Advisers | 39,186 | $784.5K | 0.00% | −706−1.8% | Reduced |
| Nebula Research & Development LLC | 37,617 | $753.1K | 0.07% | +10,943+41.0% | Added |
| ABG Innovation Capital Partners III GP Ltd | 36,747 | $735.7K | 91.94% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 35,901 | $718.7K | 0.00% | +18,467+105.9% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 35,800 | $716.7K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 33,970 | $680.1K | 0.00% | +33,970 | New |
| Perkins Capital Management Inc | 33,965 | $680.0K | 0.72% | −200−0.6% | Reduced |
| Alliancebernstein L.P. | 33,370 | $668.1K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 32,251 | $645.7K | 0.00% | +4,717+17.1% | Added |
| Jane Street Group, LLC | 30,676 | $614.1K | 0.00% | −28,707−48.3% | Reduced |
| Verition Fund Management LLC | 30,671 | $614.0K | 0.00% | +21,623+239.0% | Added |
| Summit Global Investments | 30,640 | $613.0K | 0.04% | +2,164+7.6% | Added |
| JPMorgan Chase & Co | 30,577 | $612.2K | 0.00% | −77,359−71.7% | Reduced |
| HRT Financial LP | 28,285 | $566.0K | 0.00% | +15,916+128.7% | Added |
| Parallel Advisors, LLC | 27,593 | $550.8K | 0.01% | −402−1.4% | Reduced |
| Mackenzie Financial Corp | 27,460 | $549.7K | 0.00% | +6,440+30.6% | Added |
| Legal & General Group Plc | 25,916 | $518.8K | 0.00% | −36−0.1% | Reduced |
| California State Teachers Retirement System | 24,620 | $492.9K | 0.00% | 00.0% | Unchanged |
| TownSquare Capital, LLC | 23,772 | $475.9K | 0.01% | +1,584+7.1% | Added |
| Price T Rowe Associates Inc | 23,705 | $475.0K | 0.00% | +1,008+4.4% | Added |
| Fan Yu | 22,503 | $450.5K | 0.46% | 00.0% | Unchanged |
| Truist Financial Corp | 22,308 | $446.6K | 0.00% | +1,005+4.7% | Added |
| Jacobs Levy Equity Management, Inc | 21,299 | $426.4K | 0.00% | −113,483−84.2% | Reduced |
| Dynamic Technology Lab Private Ltd | 21,235 | $425.0K | 0.06% | +3,605+20.4% | Added |
| Cerity Partners LLC | 21,138 | $423.2K | 0.00% | +21,138 | New |
| Hussman Strategic Advisors, Inc. | 21,000 | $420.4K | 0.10% | −52,500−71.4% | Reduced |
| EntryPoint Capital, LLC | 20,432 | $409.0K | 0.19% | −8,712−29.9% | Reduced |
| Advantage Alpha Capital Partners LP | 19,805 | $396.5K | 0.10% | +19,805 | New |
| Balyasny Asset Management LLC | 19,730 | $395.0K | 0.00% | +19,730 | New |
| XTX Topco Ltd | 19,628 | $393.0K | 0.02% | +19,628 | New |
| HSBC Holdings PLC | 19,627 | $390.6K | 0.00% | −46−0.2% | Reduced |