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 2021
Institutional positions in Castle Biosciences Inc as of Jun 30, 2021. 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
- 182
- +8 vs. Q1 2021
- Shares held
- 20.8M
- −230.1K (−1.1%) vs. Q1 2021
- Total value
- $1.52B
- +$82.2M (+5.7%) vs. Q1 2021
- New holders
- 37
- 78 more added
- Sold out
- 29
- 45 more reduced
1 institution that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| JPMorgan Chase & Co | 17,194 | $1.26M | 0.00% | −15,078−46.7% | Reduced |
| United Capital Financial Advisers, LLC | 17,440 | $1.28M | 0.01% | 00.0% | Unchanged |
| Signaturefd, LLC | 19,373 | $1.42M | 0.06% | +80.0% | Added |
| Advisory Research Inc | 19,752 | $1.45M | 0.10% | −2,168−9.9% | Reduced |
| Rhumbline Advisers | 20,423 | $1.50M | 0.00% | +5,913+40.8% | Added |
| Covenant Partners, LLC | 21,279 | $1.56M | 0.59% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 21,300 | $1.56M | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 21,791 | $1.60M | 0.07% | +1,791+9.0% | Added |
| Knights of Columbus Asset Advisors LLC | 22,084 | $1.62M | 0.15% | +131+0.6% | Added |
| EMC Capital Management | 22,693 | $1.66M | 0.94% | −3,769−14.2% | Reduced |
| Bank of America Corp | 22,703 | $1.66M | 0.00% | +2,736+13.7% | Added |
| Banque Pictet & Cie SA | 23,050 | $1.69M | 0.02% | +1,087+4.9% | Added |
| Alliancebernstein L.P. | 25,300 | $1.85M | 0.00% | +12,200+93.1% | Added |
| Bridgewater Associates, LP | 25,978 | $1.91M | 0.01% | +25,978 | New |
| Schonfeld Strategic Advisors LLC | 27,413 | $2.01M | 0.02% | −118−0.4% | Reduced |
| Polar Capital Holdings Plc | 28,761 | $2.11M | 0.01% | +28,761 | New |
| California State Teachers Retirement System | 29,374 | $2.15M | 0.00% | +7,402+33.7% | Added |
| Envestnet Asset Management Inc | 30,422 | $2.23M | 0.00% | +22,569+287.4% | Added |
| Axiom Investors LLC | 31,310 | $2.30M | 0.04% | −17,370−35.7% | Reduced |
| Perkins Capital Management Inc | 33,150 | $2.43M | 1.38% | −350−1.0% | Reduced |
| Rice Hall James & Associates, LLC | 34,337 | $2.52M | 0.09% | −1,482−4.1% | Reduced |
| Parametric Portfolio Associates LLC | 35,396 | $2.60M | 0.00% | +1,716+5.1% | Added |
| Swedbank AB | 40,000 | $2.93M | 0.01% | +5,000+14.3% | Added |
| Two Sigma Investments, LP | 42,938 | $3.15M | 0.01% | −49,286−53.4% | Reduced |
| Swiss National Bank | 43,700 | $3.21M | 0.00% | +2,300+5.6% | Added |
| New York State Common Retirement Fund | 45,140 | $3.31M | 0.00% | +14,422+46.9% | Added |
| Morgan Stanley | 47,479 | $3.48M | 0.00% | −88,939−65.2% | Reduced |
| Bank of Montreal | 46,518 | $3.51M | 0.00% | +420+0.9% | Added |
| Brinker Capital Investments, LLC | 50,161 | $3.68M | 0.05% | +50,161 | New |
| Two Sigma Advisers, LP | 50,800 | $3.73M | 0.01% | −11,300−18.2% | Reduced |
| ArrowMark Colorado Holdings LLC | 50,844 | $3.73M | 0.03% | −9,834−16.2% | Reduced |
| Public Employees Retirement System of Ohio | 56,254 | $4.13M | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 60,005 | $4.40M | 0.00% | −87−0.1% | Reduced |
| Altium Capital Management LP | 69,000 | $5.06M | 1.17% | +41,635+152.1% | Added |
| Segall Bryant & Hamill, LLC | 69,440 | $5.09M | 0.05% | −14,909−17.7% | Reduced |
| Putnam Investments LLC | 71,336 | $5.23M | 0.01% | +2,474+3.6% | Added |
| Madison Asset Management, LLC | 71,437 | $5.24M | 0.07% | +14,456+25.4% | Added |
| Oberweis Asset Management Inc | 74,060 | $5.43M | 1.19% | −23,010−23.7% | Reduced |
| Russell Investments Group, Ltd. | 77,897 | $5.71M | 0.01% | −2,114−2.6% | Reduced |
| Bank of New York Mellon Corp | 81,355 | $5.97M | 0.00% | +3,342+4.3% | Added |
| Nuveen Asset Management, LLC | 81,986 | $6.01M | 0.00% | +30,342+58.8% | Added |
| Premier Fund Managers Ltd | 82,054 | $6.12M | 0.21% | −26,387−24.3% | Reduced |
| King Luther Capital Management Corp | 84,204 | $6.17M | 0.03% | +4,224+5.3% | Added |
| M&G Investment Management Ltd | 91,678 | $6.69M | 0.03% | +91,678 | New |
| Ameriprise Financial Inc | 93,292 | $6.84M | 0.00% | −15,760−14.5% | Reduced |
| DF Dent & Co Inc | 94,200 | $6.91M | 0.07% | +6,857+7.9% | Added |
| Essex Investment Management Co LLC | 96,721 | $7.09M | 0.82% | +49,103+103.1% | Added |
| Lord, Abbett & Co. LLC | 98,100 | $7.19M | 0.02% | −95,349−49.3% | Reduced |
| Lisanti Capital Growth, LLC | 107,650 | $7.89M | 0.98% | +50,470+88.3% | Added |
| Polar Asset Management Partners Inc. | 113,904 | $8.35M | 0.10% | +113,904 | New |
| Calamos Advisors LLC | 114,607 | $8.40M | 0.04% | +8,846+8.4% | Added |
| Charles Schwab Investment Management Inc | 133,253 | $9.77M | 0.00% | +16,606+14.2% | Added |
| Trustcore Financial Services, LLC | 152,474 | $11.2M | 1.18% | −2,000−1.3% | Reduced |
| Monarch Partners Asset Management LLC | 153,887 | $11.3M | 1.62% | +140,227+1,026.6% | Added |
| Castleark Management LLC | 155,437 | $11.4M | 0.38% | −8,170−5.0% | Reduced |
| Principal Financial Group Inc | 168,827 | $12.4M | 0.01% | +80,263+90.6% | Added |
| Intrinsic Edge Capital Management LLC | 169,965 | $12.5M | 0.75% | +129,965+324.9% | Added |
| Redwood Investments, LLC | 186,491 | $13.7M | 1.10% | −171−0.1% | Reduced |
| UBS Asset Management Americas Inc | 186,807 | $13.7M | 0.01% | −6,771−3.5% | Reduced |
| Grandeur Peak Global Advisors, LLC | 215,218 | $15.8M | 0.75% | +175,879+447.1% | Added |
| Northern Trust Corp | 222,803 | $16.3M | 0.00% | +45,829+25.9% | Added |
| Next Century Growth Investors LLC | 281,795 | $20.7M | 1.61% | −36,644−11.5% | Reduced |
| Victory Capital Management Inc | 308,257 | $22.6M | 0.02% | −78,528−20.3% | Reduced |
| Goldman Sachs Group Inc | 334,615 | $24.5M | 0.01% | −69,519−17.2% | Reduced |
| Geode Capital Management, LLC | 340,075 | $24.9M | 0.00% | +59,033+21.0% | Added |
| Kornitzer Capital Management Inc | 343,817 | $25.2M | 0.38% | +77,940+29.3% | Added |
| Driehaus Capital Management LLC | 379,493 | $27.8M | 0.37% | +581+0.2% | Added |
| Nikko Asset Management Americas, Inc. | 445,112 | $28.4M | 0.11% | +445,112 | New |
| GW&K Investment Management, LLC | 422,767 | $31.0M | 0.27% | +740+0.2% | Added |
| State Street Corp | 430,898 | $31.6M | 0.00% | +125,419+41.1% | Added |
| Granahan Investment Management Inc | 444,629 | $32.6M | 0.61% | +160,408+56.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 445,112 | $32.6M | 0.02% | +445,112 | New |
| Pembroke Management, LTD | 450,894 | $33.1M | 2.59% | −10,328−2.2% | Reduced |
| Macquarie Group Ltd | 490,217 | $35.9M | 0.03% | +489,719+98,337.1% | Added |
| Wells Fargo & Company | 507,538 | $37.2M | 0.01% | −6,353−1.2% | Reduced |
| Zevenbergen Capital Investments LLC | 542,926 | $39.8M | 0.71% | +265,126+95.4% | Added |
| RTW Investments, LP | 799,009 | $58.6M | 0.88% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,127,192 | $82.7M | 0.00% | +112,070+11.0% | Added |
| Invesco Ltd. | 1,138,252 | $83.5M | 0.02% | +111,547+10.9% | Added |
| BlackRock Inc. | 1,691,998 | $124.1M | 0.00% | +328,162+24.1% | Added |
| Wasatch Advisors Inc | 2,504,898 | $183.7M | 0.75% | +151,419+6.4% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 2,525,613 | $185.2M | 0.34% | −71,675−2.8% | Reduced |
| Matrix Capital Management Company, LP | 0 | $0 | 0.00% | −1,000,000−100.0% | Sold out |
| Highland Capital Management LP | 0 | $0 | 0.00% | −916,270−100.0% | Sold out |
| Select Equity Group, L.P. | 0 | $0 | 0.00% | −360,085−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −250,070−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −142,988−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −139,747−100.0% | Sold out |
| Ally Bridge Group (NY) LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −46,501−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −41,070−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −27,500−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −26,861−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −23,900−100.0% | Sold out |
| Aviva PLC | 0 | $0 | 0.00% | −19,319−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −19,153−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −18,210−100.0% | Sold out |
| Graticule Asia Macro Advisors LLC | 0 | $0 | 0.00% | −14,521−100.0% | Sold out |
| Claybrook Capital, LLC | 0 | $0 | 0.00% | −10,026−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −8,300−100.0% | Sold out |