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, Q4 2022
Institutional positions in Castle Biosciences Inc as of Dec 31, 2022. 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
- 153
- −3 vs. Q3 2022
- Shares held
- 22.2M
- +317.7K (+1.5%) vs. Q3 2022
- Total value
- $522.0M
- −$47.8M (−8.4%) vs. Q3 2022
- New holders
- 23
- 51 more added
- Sold out
- 26
- 55 more reduced
1 institution that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2022: 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, Q4 2022
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rhumbline Advisers | 37,912 | $892.0K | 0.00% | +393+1.0% | Added |
| Engineers Gate Manager LP | 39,529 | $930.5K | 0.06% | +29,992+314.5% | Added |
| Zacks Investment Management | 42,489 | $1.00M | 0.01% | +42,489 | New |
| Bank of America Corp | 48,957 | $1.15M | 0.00% | −76,117−60.9% | Reduced |
| Stephens Inc | 53,632 | $1.26M | 0.03% | +8,857+19.8% | Added |
| Swiss National Bank | 53,900 | $1.27M | 0.00% | +1,000+1.9% | Added |
| Two Sigma Investments, LP | 53,945 | $1.27M | 0.00% | −67,603−55.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 57,459 | $1.35M | 0.01% | −108,935−65.5% | Reduced |
| Isthmus Partners, LLC | 57,812 | $1.36M | 0.20% | +1,173+2.1% | Added |
| Morgan Stanley | 58,318 | $1.37M | 0.00% | −137,484−70.2% | Reduced |
| Tudor Investment Corp Et Al | 58,903 | $1.39M | 0.03% | +44,665+313.7% | Added |
| Public Employees Retirement System of Ohio | 66,705 | $1.57M | 0.01% | −12,070−15.3% | Reduced |
| Algert Global LLC | 68,852 | $1.62M | 0.09% | +18,920+37.9% | Added |
| Bank of New York Mellon Corp | 82,982 | $1.95M | 0.00% | +1,964+2.4% | Added |
| Voya Investment Management LLC | 104,643 | $2.46M | 0.00% | +39,608+60.9% | Added |
| Polar Asset Management Partners Inc. | 107,100 | $2.52M | 0.04% | +107,100 | New |
| Ameriprise Financial Inc | 111,239 | $2.62M | 0.00% | −21,281−16.1% | Reduced |
| Norges Bank | 131,200 | $3.09M | 0.00% | −5,400−4.0% | Reduced |
| Two Sigma Advisers, LP | 132,100 | $3.11M | 0.01% | −21,300−13.9% | Reduced |
| UBS Asset Management Americas Inc | 159,063 | $3.74M | 0.00% | +12,717+8.7% | Added |
| First Light Asset Management, LLC | 161,604 | $3.80M | 0.35% | −1,620−1.0% | Reduced |
| Trustcore Financial Services, LLC | 164,897 | $3.88M | 0.34% | +146+0.1% | Added |
| Monarch Partners Asset Management LLC | 170,195 | $4.01M | 1.18% | −18,436−9.8% | Reduced |
| Stonepine Capital Management, LLC | 178,240 | $4.20M | 1.77% | +178,240 | New |
| Charles Schwab Investment Management Inc | 184,536 | $4.34M | 0.00% | +6,910+3.9% | Added |
| Point72 Asset Management, L.P. | 201,381 | $4.74M | 0.02% | +201,381 | New |
| Banque Pictet & Cie SA | 204,417 | $4.81M | 0.05% | −43,301−17.5% | Reduced |
| New York State Common Retirement Fund | 214,478 | $5.05M | 0.01% | +9,244+4.5% | Added |
| Northern Trust Corp | 230,093 | $5.42M | 0.00% | +2,625+1.2% | Added |
| Goldman Sachs Group Inc | 246,856 | $5.81M | 0.00% | +64,184+35.1% | Added |
| Deerfield Management Company, L.P. (Series C) | 272,135 | $6.41M | 0.13% | +272,135 | New |
| Nuveen Asset Management, LLC | 302,649 | $7.12M | 0.00% | +191,974+173.5% | Added |
| Dimensional Fund Advisors LP | 323,686 | $7.62M | 0.00% | +85,198+35.7% | Added |
| Allspring Global Investments Holdings, LLC | 352,830 | $8.31M | 0.01% | +588+0.2% | Added |
| Intrinsic Edge Capital Management LLC | 364,967 | $8.59M | 0.92% | +52,567+16.8% | Added |
| Essex Investment Management Co LLC | 453,317 | $10.7M | 1.66% | +16,682+3.8% | Added |
| Geode Capital Management, LLC | 465,667 | $11.0M | 0.00% | +20,004+4.5% | Added |
| GW&K Investment Management, LLC | 479,659 | $11.3M | 0.11% | −24,404−4.8% | Reduced |
| Greenhouse Funds LLLP | 494,241 | $11.6M | 1.07% | +51,004+11.5% | Added |
| State Street Corp | 504,453 | $11.9M | 0.00% | +6,528+1.3% | Added |
| RTW Investments, LP | 516,995 | $12.2M | 0.25% | 00.0% | Unchanged |
| Palisade Capital Management LLC | 551,095 | $13.0M | 0.35% | −28,849−5.0% | Reduced |
| Citadel Advisors LLC | 551,315 | $13.0M | 0.02% | −181,340−24.8% | Reduced |
| Portolan Capital Management, LLC | 583,716 | $13.7M | 1.36% | +283,126+94.2% | Added |
| Kornitzer Capital Management Inc | 716,244 | $16.9M | 0.34% | +92,048+14.7% | Added |
| Principal Financial Group Inc | 910,820 | $21.4M | 0.02% | +475,080+109.0% | Added |
| Millennium Management LLC | 913,375 | $21.5M | 0.02% | −48,966−5.1% | Reduced |
| Bellevue Group AG | 944,312 | $22.2M | 0.30% | +2,441+0.3% | Added |
| Granahan Investment Management Inc | 1,044,328 | $24.6M | 0.75% | +282,111+37.0% | Added |
| Vanguard Group Inc | 1,392,724 | $32.8M | 0.00% | +141,991+11.4% | Added |
| BlackRock Inc. | 2,123,688 | $50.0M | 0.00% | +81,864+4.0% | Added |
| Wasatch Advisors Inc | 3,222,562 | $75.9M | 0.51% | −122,185−3.7% | Reduced |
| IFP Advisors, Inc | 11 | – | – | +11 | New |
| Hallmark Capital Management Inc | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −297,840−100.0% | Sold out |
| Segall Bryant & Hamill, LLC | 0 | $0 | 0.00% | −202,344−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −88,625−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −86,551−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −67,432−100.0% | Sold out |
| Millrace Asset Group, Inc. | 0 | $0 | 0.00% | −63,345−100.0% | Sold out |
| Altium Capital Management LP | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −38,876−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −31,616−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −25,637−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −23,949−100.0% | Sold out |
| United Capital Financial Advisers, LLC | 0 | $0 | 0.00% | −18,054−100.0% | Sold out |
| Valmark Advisers, Inc. | 0 | $0 | 0.00% | −12,269−100.0% | Sold out |
| New York Life Investments Alternatives | 0 | $0 | 0.00% | −9,130−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −8,968−100.0% | Sold out |
| Mesirow Financial Investment Management, Inc. | 0 | $0 | 0.00% | −7,967−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −6,573−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −4,158−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −3,090−100.0% | Sold out |
| PEAK6 Investments LLC | 0 | $0 | 0.00% | −2,875−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −850−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −1,168−100.0% | Sold out |
| Almanack Investment Partners, LLC. | 0 | $0 | 0.00% | −270−100.0% | Sold out |
| Howe & Rusling Inc | 0 | $0 | 0.00% | −131−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| FourThought Financial, LLC | – | – | – | – | Not filed |