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 2023
Institutional positions in Castle Biosciences Inc as of Dec 31, 2023. 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
- +19 vs. Q3 2023
- Shares held
- 23.9M
- +742.8K (+3.2%) vs. Q3 2023
- Total value
- $515.4M
- +$124.6M (+31.9%) vs. Q3 2023
- New holders
- 37
- 55 more added
- Sold out
- 18
- 45 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wasatch Advisors Inc | 2,590,951 | $55.9M | 0.31% | −189,793−6.8% | Reduced |
| BlackRock Inc. | 2,283,199 | $49.3M | 0.00% | +147,019+6.9% | Added |
| Granahan Investment Management Inc | 2,166,471 | $46.8M | 1.54% | −321,202−12.9% | Reduced |
| Principal Financial Group Inc | 1,585,673 | $34.2M | 0.02% | +103,503+7.0% | Added |
| Vanguard Group Inc | 1,461,481 | $31.5M | 0.00% | +22,093+1.5% | Added |
| Bellevue Group AG | 1,232,378 | $26.6M | 0.41% | +4,347+0.4% | Added |
| Deerfield Management Company, L.P. (Series C) | 965,428 | $20.8M | 0.38% | +18,808+2.0% | Added |
| Portolan Capital Management, LLC | 728,653 | $15.7M | 1.37% | +475,625+188.0% | Added |
| Millennium Management LLC | 716,350 | $15.5M | 0.01% | +121,254+20.4% | Added |
| Dimensional Fund Advisors LP | 663,882 | $14.3M | 0.00% | +108,481+19.5% | Added |
| State Street Corp | 579,918 | $12.5M | 0.00% | +14,754+2.6% | Added |
| Geode Capital Management, LLC | 566,115 | $12.2M | 0.00% | +29,879+5.6% | Added |
| Kornitzer Capital Management Inc | 542,874 | $11.7M | 0.23% | −105,350−16.3% | Reduced |
| Palisade Capital Management LLC | 539,135 | $11.6M | 0.31% | −63,126−10.5% | Reduced |
| Jacobs Levy Equity Management, Inc | 536,787 | $11.6M | 0.06% | −10,616−1.9% | Reduced |
| Morgan Stanley | 478,035 | $10.3M | 0.00% | +439,389+1,137.0% | Added |
| Parkman Healthcare Partners LLC | 357,156 | $7.71M | 1.09% | +132,564+59.0% | Added |
| Citadel Advisors LLC | 328,749 | $7.09M | 0.01% | −189,309−36.5% | Reduced |
| Intrinsic Edge Capital Management LLC | 326,270 | $7.04M | 0.75% | +170,000+108.8% | Added |
| Ameriprise Financial Inc | 279,727 | $6.04M | 0.00% | +13,727+5.2% | Added |
| Northern Trust Corp | 249,983 | $5.39M | 0.00% | +6,137+2.5% | Added |
| New York State Common Retirement Fund | 237,126 | $5.12M | 0.01% | −8,742−3.6% | Reduced |
| Next Century Growth Investors LLC | 213,886 | $4.62M | 0.45% | +213,886 | New |
| Charles Schwab Investment Management Inc | 207,295 | $4.47M | 0.00% | +6,306+3.1% | Added |
| Banque Pictet & Cie SA | 182,664 | $3.94M | 0.04% | −20,611−10.1% | Reduced |
| Nuveen Asset Management, LLC | 182,474 | $3.94M | 0.00% | +6,190+3.5% | Added |
| Invenomic Capital Management LP | 171,812 | $3.71M | 0.20% | −114,145−39.9% | Reduced |
| Schonfeld Strategic Advisors LLC | 161,300 | $3.48M | 0.03% | +13,270+9.0% | Added |
| Deutsche Bank AG | 155,830 | $3.36M | 0.00% | +141,792+1,010.1% | Added |
| Bank of America Corp | 138,578 | $2.99M | 0.00% | +95,855+224.4% | Added |
| Algert Global LLC | 129,110 | $2.79M | 0.11% | +61,898+92.1% | Added |
| Advisors Capital Management, LLC | 121,889 | $2.63M | 0.05% | +4,999+4.3% | Added |
| Renaissance Technologies LLC | 112,400 | $2.43M | 0.00% | +5,600+5.2% | Added |
| Knights of Columbus Asset Advisors LLC | 106,262 | $2.29M | 0.15% | +52,921+99.2% | Added |
| Public Employees Retirement System of Ohio | 100,254 | $2.16M | 0.01% | 00.0% | Unchanged |
| Tritonpoint Wealth, LLC | 94,356 | $2.04M | 0.20% | +94,356 | New |
| Bank of New York Mellon Corp | 93,308 | $2.01M | 0.00% | +12,167+15.0% | Added |
| Acadian Asset Management LLC | 91,381 | $1.97M | 0.01% | +91,381 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 88,570 | $1.91M | 0.01% | +7,985+9.9% | Added |
| Goldman Sachs Group Inc | 80,389 | $1.73M | 0.00% | −71,362−47.0% | Reduced |
| Millrace Asset Group, Inc. | 78,914 | $1.70M | 1.69% | +1,599+2.1% | Added |
| Brinker Capital Investments, LLC | 69,733 | $1.53M | 0.02% | −4,294−5.8% | Reduced |
| Orion Portfolio Solutions, LLC | 69,733 | $1.53M | 0.02% | −4,294−5.8% | Reduced |
| Cubist Systematic Strategies, LLC | 70,216 | $1.52M | 0.02% | −66,321−48.6% | Reduced |
| Polar Asset Management Partners Inc. | 53,200 | $1.15M | 0.03% | +53,200 | New |
| D. E. Shaw & Co., Inc. | 52,364 | $1.13M | 0.00% | +52,364 | New |
| JPMorgan Chase & Co | 50,366 | $1.09M | 0.00% | −2,297−4.4% | Reduced |
| Swiss National Bank | 50,200 | $1.08M | 0.00% | −5,000−9.1% | Reduced |
| Envestnet Asset Management Inc | 50,027 | $1.08M | 0.00% | −3,956−7.3% | Reduced |
| Gsa Capital Partners LLP | 48,096 | $1.04M | 0.09% | −4,099−7.9% | Reduced |
| Marshall Wace, LLP | 44,900 | $968.9K | 0.00% | +44,900 | New |
| Alliancebernstein L.P. | 44,690 | $964.4K | 0.00% | 00.0% | Unchanged |
| Numerai GP LLC | 43,979 | $949.1K | 0.34% | −24,184−35.5% | Reduced |
| Stephens Inc | 43,579 | $940.4K | 0.02% | −53,372−55.1% | Reduced |
| Jane Street Group, LLC | 43,351 | $935.5K | 0.00% | +22,560+108.5% | Added |
| UBS Group AG | 41,477 | $895.1K | 0.00% | +23,436+129.9% | Added |
| Barclays PLC | 39,380 | $849.8K | 0.00% | +30,398+338.4% | Added |
| Captrust Financial Advisors | 38,409 | $828.9K | 0.00% | −324−0.8% | Reduced |
| Rhumbline Advisers | 37,908 | $818.0K | 0.00% | +60+0.2% | Added |
| ABG Innovation Capital Partners III GP Ltd | 36,747 | $793.0K | 88.14% | +3,121+9.3% | Added |
| Credit Suisse AG | 34,050 | $734.8K | 0.00% | +4,598+15.6% | Added |
| Perkins Capital Management Inc | 32,140 | $694.0K | 0.59% | +2,980+10.2% | Added |
| Invesco Ltd. | 32,156 | $693.9K | 0.00% | −3,801−10.6% | Reduced |
| Two Sigma Advisers, LP | 32,100 | $692.7K | 0.00% | −24,400−43.2% | Reduced |
| Russell Investments Group, Ltd. | 31,983 | $690.2K | 0.00% | +2,998+10.3% | Added |
| Royce & Associates LP | 31,642 | $682.8K | 0.01% | +8,833+38.7% | Added |
| Engineers Gate Manager LP | 31,267 | $674.7K | 0.02% | +31,267 | New |
| Simon Quick Advisors, LLC | 29,062 | $627.2K | 0.06% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 27,261 | $588.3K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 26,968 | $582.0K | 0.02% | 00.0% | Unchanged |
| California State Teachers Retirement System | 26,766 | $577.6K | 0.00% | −1,112−4.0% | Reduced |
| American Century Companies Inc | 26,709 | $576.4K | 0.00% | +9,078+51.5% | Added |
| Susquehanna International Group, LLP | 26,600 | $574.0K | 0.00% | +26,600 | New |
| Soleus Capital Management, L.P. | 26,000 | $561.1K | 0.06% | −257,500−90.8% | Reduced |
| Putnam Investments LLC | 25,006 | $539.6K | 0.00% | −789−3.1% | Reduced |
| Legal & General Group Plc | 24,821 | $535.6K | 0.00% | +4,457+21.9% | Added |
| STRS Ohio | 24,100 | $520.0K | 0.00% | −4,000−14.2% | Reduced |
| TownSquare Capital, LLC | 22,741 | $490.8K | 0.01% | −3,242−12.5% | Reduced |
| Fan Yu | 22,503 | $485.6K | 2.43% | +22,503 | New |
| Jump Financial, LLC | 20,436 | $441.0K | 0.01% | −3,564−14.9% | Reduced |
| State of Wisconsin Investment Board | 19,915 | $429.8K | 0.00% | +19,915 | New |
| Los Angeles Capital Management LLC | 18,201 | $392.8K | 0.00% | −2,984−14.1% | Reduced |
| Two Sigma Investments, LP | 17,300 | $373.3K | 0.00% | +4,500+35.2% | Added |
| Price T Rowe Associates Inc | 16,903 | $365.0K | 0.00% | +428+2.6% | Added |
| Great West Life Assurance Co | 16,892 | $362.0K | 0.00% | +5,659+50.4% | Added |
| Capital Impact Advisors, LLC | 16,554 | $357.2K | 0.47% | 00.0% | Unchanged |
| Graham Capital Management, L.P. | 14,880 | $321.1K | 0.01% | +14,880 | New |
| AQR Capital Management LLC | 14,203 | $306.5K | 0.00% | −240−1.7% | Reduced |
| XTX Topco Ltd | 14,145 | $305.2K | 0.07% | +14,145 | New |
| Versor Investments LP | 14,143 | $305.2K | 0.06% | −400−2.8% | Reduced |
| Pictet & Cie (Europe) SA | 13,563 | $292.7K | 0.01% | −516−3.7% | Reduced |
| DFPG Investments, LLC | 13,649 | $283.8K | 0.02% | −766−5.3% | Reduced |
| Centiva Capital, LP | 12,558 | $271.0K | 0.02% | +12,558 | New |
| MetLife Investment Management | 12,369 | $266.9K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 12,349 | $266.5K | 0.00% | −50−0.4% | Reduced |
| Corton Capital Inc. | 12,343 | $266.4K | 0.08% | +12,343 | New |
| Prelude Capital Management, LLC | 12,193 | $263.1K | 0.02% | +12,193 | New |
| Keebeck Alpha, LP | 12,193 | $263.1K | 0.21% | +12,193 | New |
| Fox Run Management, L.L.C. | 12,150 | $262.2K | 0.07% | +12,150 | New |
| Harbor Capital Advisors, Inc. | 11,952 | $257.9K | 0.05% | +2,205+22.6% | Added |