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 2024
Institutional positions in Castle Biosciences Inc as of Mar 31, 2024. 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
- 151
- +1 vs. Q4 2023
- Shares held
- 25.0M
- +1.13M (+4.8%) vs. Q4 2023
- Total value
- $553.2M
- +$38.6M (+7.5%) vs. Q4 2023
- New holders
- 18
- 54 more added
- Sold out
- 17
- 55 more reduced
3 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2024
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 2,595,687 | $57.5M | 0.00% | +312,488+13.7% | Added |
| Wasatch Advisors Inc | 2,551,088 | $56.5M | 0.30% | −39,863−1.5% | Reduced |
| Granahan Investment Management Inc | 1,627,224 | $36.0M | 1.27% | −539,247−24.9% | Reduced |
| Principal Financial Group Inc | 1,532,472 | $33.9M | 0.02% | −53,201−3.4% | Reduced |
| Vanguard Group Inc | 1,494,176 | $33.1M | 0.00% | +32,695+2.2% | Added |
| Bellevue Group AG | 1,220,085 | $27.0M | 0.41% | −12,293−1.0% | Reduced |
| Portolan Capital Management, LLC | 1,043,410 | $23.1M | 1.76% | +314,757+43.2% | Added |
| Deerfield Management Company, L.P. (Series C) | 928,017 | $20.6M | 0.36% | −37,411−3.9% | Reduced |
| Dimensional Fund Advisors LP | 749,259 | $16.6M | 0.00% | +85,377+12.9% | Added |
| Soleus Capital Management, L.P. | 725,457 | $16.1M | 1.41% | +699,457+2,690.2% | Added |
| Citadel Advisors LLC | 655,766 | $14.5M | 0.01% | +327,017+99.5% | Added |
| Morgan Stanley | 650,711 | $14.4M | 0.00% | +172,676+36.1% | Added |
| State Street Corp | 605,799 | $13.4M | 0.00% | +25,881+4.5% | Added |
| Geode Capital Management, LLC | 578,534 | $12.8M | 0.00% | +12,419+2.2% | Added |
| Palisade Capital Management LLC | 547,167 | $12.1M | 0.32% | +8,032+1.5% | Added |
| Kornitzer Capital Management Inc | 542,874 | $12.0M | 0.22% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 531,902 | $11.8M | 0.05% | −4,885−0.9% | Reduced |
| Parkman Healthcare Partners LLC | 367,408 | $8.14M | 1.00% | +10,252+2.9% | Added |
| Ameriprise Financial Inc | 295,327 | $6.54M | 0.00% | +15,600+5.6% | Added |
| Deutsche Bank AG | 262,808 | $5.82M | 0.00% | +106,978+68.7% | Added |
| Millennium Management LLC | 248,553 | $5.51M | 0.00% | −467,797−65.3% | Reduced |
| Northern Trust Corp | 244,388 | $5.41M | 0.00% | −5,595−2.2% | Reduced |
| New York State Common Retirement Fund | 228,579 | $5.06M | 0.01% | −8,547−3.6% | Reduced |
| Intrinsic Edge Capital Management LLC | 223,567 | $4.95M | 0.42% | −102,703−31.5% | Reduced |
| Next Century Growth Investors LLC | 219,473 | $4.86M | 0.42% | +5,587+2.6% | Added |
| Acadian Asset Management LLC | 210,824 | $4.67M | 0.02% | +119,443+130.7% | Added |
| Charles Schwab Investment Management Inc | 204,937 | $4.54M | 0.00% | −2,358−1.1% | Reduced |
| Renaissance Technologies LLC | 204,700 | $4.53M | 0.01% | +92,300+82.1% | Added |
| Nuveen Asset Management, LLC | 189,628 | $4.20M | 0.00% | +7,154+3.9% | Added |
| Banque Pictet & Cie SA | 166,881 | $3.70M | 0.04% | −15,783−8.6% | Reduced |
| Invenomic Capital Management LP | 166,714 | $3.69M | 0.20% | −5,098−3.0% | Reduced |
| Schonfeld Strategic Advisors LLC | 165,441 | $3.66M | 0.03% | +4,141+2.6% | Added |
| Bank of America Corp | 151,165 | $3.35M | 0.00% | +12,587+9.1% | Added |
| Algert Global LLC | 145,407 | $3.22M | 0.13% | +16,297+12.6% | Added |
| Advisors Capital Management, LLC | 141,115 | $3.13M | 0.06% | +19,226+15.8% | Added |
| Goldman Sachs Group Inc | 124,672 | $2.76M | 0.00% | +44,283+55.1% | Added |
| Marshall Wace, LLP | 97,932 | $2.17M | 0.00% | +53,032+118.1% | Added |
| Public Employees Retirement System of Ohio | 93,436 | $2.07M | 0.01% | −6,818−6.8% | Reduced |
| Tritonpoint Wealth, LLC | 92,250 | $2.04M | 0.21% | −2,106−2.2% | Reduced |
| Bank of New York Mellon Corp | 84,105 | $1.86M | 0.00% | −9,203−9.9% | Reduced |
| Cubist Systematic Strategies, LLC | 81,744 | $1.81M | 0.02% | +11,528+16.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 77,657 | $1.72M | 0.01% | −10,913−12.3% | Reduced |
| JPMorgan Chase & Co | 76,143 | $1.69M | 0.00% | +25,777+51.2% | Added |
| Brinker Capital Investments, LLC | 67,237 | $1.49M | 0.02% | −2,496−3.6% | Reduced |
| Orion Portfolio Solutions, LLC | 67,237 | $1.49M | 0.02% | −2,496−3.6% | Reduced |
| Polar Asset Management Partners Inc. | 60,800 | $1.35M | 0.04% | +7,600+14.3% | Added |
| UBS Group AG | 54,843 | $1.21M | 0.00% | +13,366+32.2% | Added |
| Gsa Capital Partners LLP | 52,448 | $1.16M | 0.09% | +4,352+9.0% | Added |
| Swiss National Bank | 50,200 | $1.11M | 0.00% | 00.0% | Unchanged |
| Millrace Asset Group, Inc. | 49,773 | $1.10M | 1.11% | −29,141−36.9% | Reduced |
| Barclays PLC | 47,425 | $1.05M | 0.00% | +8,045+20.4% | Added |
| Envestnet Asset Management Inc | 45,927 | $1.02M | 0.00% | −4,100−8.2% | Reduced |
| Trexquant Investment LP | 44,997 | $996.7K | 0.02% | +33,506+291.6% | Added |
| Harbor Capital Advisors, Inc. | 39,706 | $879.0K | 0.11% | +27,754+232.2% | Added |
| Rhumbline Advisers | 38,908 | $861.8K | 0.00% | +1,000+2.6% | Added |
| American Century Companies Inc | 37,920 | $839.9K | 0.00% | +11,211+42.0% | Added |
| Credit Suisse AG | 35,809 | $793.2K | 0.00% | +1,759+5.2% | Added |
| Franklin Resources Inc | 35,500 | $786.3K | 0.00% | +35,500 | New |
| Stephens Inc | 34,734 | $769.4K | 0.01% | −8,845−20.3% | Reduced |
| HSBC Holdings PLC | 34,468 | $763.5K | 0.00% | +34,468 | New |
| ABG Innovation Capital Partners III GP Ltd | 33,626 | $744.8K | 89.54% | −3,121−8.5% | Reduced |
| Alliancebernstein L.P. | 33,370 | $739.1K | 0.00% | −11,320−25.3% | Reduced |
| Perkins Capital Management Inc | 32,140 | $712.0K | 0.59% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 31,788 | $704.1K | 0.00% | +4,527+16.6% | Added |
| Russell Investments Group, Ltd. | 31,693 | $702.0K | 0.00% | −290−0.9% | Reduced |
| Engineers Gate Manager LP | 29,996 | $664.4K | 0.02% | −1,271−4.1% | Reduced |
| Simon Quick Advisors, LLC | 29,062 | $643.7K | 0.05% | 00.0% | Unchanged |
| Invesco Ltd. | 27,396 | $606.8K | 0.00% | −4,760−14.8% | Reduced |
| Parallel Advisors, LLC | 26,668 | $590.7K | 0.02% | −300−1.1% | Reduced |
| California State Teachers Retirement System | 25,484 | $564.5K | 0.00% | −1,282−4.8% | Reduced |
| Knights of Columbus Asset Advisors LLC | 25,133 | $556.7K | 0.04% | −81,129−76.3% | Reduced |
| Legal & General Group Plc | 24,771 | $548.7K | 0.00% | −50−0.2% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 24,603 | $545.0K | 0.04% | +14,010+132.3% | Added |
| Man Group plc | 23,057 | $510.7K | 0.00% | +23,057 | New |
| Alpha DNA Investment Management LLC | 23,040 | $510.3K | 0.28% | +23,040 | New |
| AQR Capital Management LLC | 22,795 | $504.9K | 0.00% | +8,592+60.5% | Added |
| Capital Impact Advisors, LLC | 22,713 | $503.1K | 0.65% | +6,159+37.2% | Added |
| STRS Ohio | 22,700 | $502.0K | 0.00% | −1,400−5.8% | Reduced |
| Captrust Financial Advisors | 21,050 | $466.3K | 0.00% | −17,359−45.2% | Reduced |
| Sherbrooke Park Advisers LLC | 20,825 | $461.3K | 0.09% | +20,825 | New |
| Petrus Trust Company, LTA | 19,609 | $434.3K | 0.04% | +19,609 | New |
| TownSquare Capital, LLC | 19,352 | $428.6K | 0.01% | −3,389−14.9% | Reduced |
| Two Sigma Advisers, LP | 19,000 | $420.9K | 0.00% | −13,100−40.8% | Reduced |
| Los Angeles Capital Management LLC | 18,201 | $403.2K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 18,034 | $400.0K | 0.00% | +1,131+6.7% | Added |
| State of Wisconsin Investment Board | 17,642 | $390.8K | 0.00% | −2,273−11.4% | Reduced |
| Great West Life Assurance Co | 16,892 | $374.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 16,700 | $369.9K | 0.00% | −600−3.5% | Reduced |
| New York Life Investment Management LLC | 16,516 | $365.8K | 0.00% | +16,516 | New |
| HRT Financial LP | 15,011 | $332.0K | 0.00% | +15,011 | New |
| Balyasny Asset Management LLC | 14,748 | $326.7K | 0.00% | +14,748 | New |
| Premier Fund Managers Ltd | 14,783 | $314.0K | 0.01% | +14,783 | New |
| Birchview Capital, LP | 14,000 | $310.1K | 0.25% | +4,000+40.0% | Added |
| D. E. Shaw & Co., Inc. | 13,382 | $296.4K | 0.00% | −38,982−74.4% | Reduced |
| Tudor Investment Corp Et Al | 12,997 | $287.9K | 0.00% | +12,997 | New |
| Pictet & Cie (Europe) SA | 12,897 | $285.7K | 0.01% | −666−4.9% | Reduced |
| Diversify Advisory Services, LLC | 12,498 | $278.1K | 0.02% | +12,498 | New |
| MetLife Investment Management | 12,369 | $274.0K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 12,244 | $271.2K | 0.00% | −105−0.9% | Reduced |
| Graham Capital Management, L.P. | 12,190 | $270.0K | 0.01% | −2,690−18.1% | Reduced |