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 |
|---|---|---|---|---|---|
| ARK Investment Management LLCSuperinvestorARK Invest | 2,525,613 | $185.2M | 0.34% | −71,675−2.8% | Reduced |
| Wasatch Advisors Inc | 2,504,898 | $183.7M | 0.75% | +151,419+6.4% | Added |
| BlackRock Inc. | 1,691,998 | $124.1M | 0.00% | +328,162+24.1% | Added |
| Invesco Ltd. | 1,138,252 | $83.5M | 0.02% | +111,547+10.9% | Added |
| Vanguard Group Inc | 1,127,192 | $82.7M | 0.00% | +112,070+11.0% | Added |
| RTW Investments, LP | 799,009 | $58.6M | 0.88% | 00.0% | Unchanged |
| Zevenbergen Capital Investments LLC | 542,926 | $39.8M | 0.71% | +265,126+95.4% | Added |
| Wells Fargo & Company | 507,538 | $37.2M | 0.01% | −6,353−1.2% | Reduced |
| Macquarie Group Ltd | 490,217 | $35.9M | 0.03% | +489,719+98,337.1% | Added |
| Pembroke Management, LTD | 450,894 | $33.1M | 2.59% | −10,328−2.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 445,112 | $32.6M | 0.02% | +445,112 | New |
| Granahan Investment Management Inc | 444,629 | $32.6M | 0.61% | +160,408+56.4% | Added |
| State Street Corp | 430,898 | $31.6M | 0.00% | +125,419+41.1% | Added |
| GW&K Investment Management, LLC | 422,767 | $31.0M | 0.27% | +740+0.2% | Added |
| Nikko Asset Management Americas, Inc. | 445,112 | $28.4M | 0.11% | +445,112 | New |
| Driehaus Capital Management LLC | 379,493 | $27.8M | 0.37% | +581+0.2% | Added |
| Kornitzer Capital Management Inc | 343,817 | $25.2M | 0.38% | +77,940+29.3% | Added |
| Geode Capital Management, LLC | 340,075 | $24.9M | 0.00% | +59,033+21.0% | Added |
| Goldman Sachs Group Inc | 334,615 | $24.5M | 0.01% | −69,519−17.2% | Reduced |
| Victory Capital Management Inc | 308,257 | $22.6M | 0.02% | −78,528−20.3% | Reduced |
| Next Century Growth Investors LLC | 281,795 | $20.7M | 1.61% | −36,644−11.5% | Reduced |
| Northern Trust Corp | 222,803 | $16.3M | 0.00% | +45,829+25.9% | Added |
| Grandeur Peak Global Advisors, LLC | 215,218 | $15.8M | 0.75% | +175,879+447.1% | Added |
| UBS Asset Management Americas Inc | 186,807 | $13.7M | 0.01% | −6,771−3.5% | Reduced |
| Redwood Investments, LLC | 186,491 | $13.7M | 1.10% | −171−0.1% | Reduced |
| Intrinsic Edge Capital Management LLC | 169,965 | $12.5M | 0.75% | +129,965+324.9% | Added |
| Principal Financial Group Inc | 168,827 | $12.4M | 0.01% | +80,263+90.6% | Added |
| Castleark Management LLC | 155,437 | $11.4M | 0.38% | −8,170−5.0% | Reduced |
| Monarch Partners Asset Management LLC | 153,887 | $11.3M | 1.62% | +140,227+1,026.6% | Added |
| Trustcore Financial Services, LLC | 152,474 | $11.2M | 1.18% | −2,000−1.3% | Reduced |
| Charles Schwab Investment Management Inc | 133,253 | $9.77M | 0.00% | +16,606+14.2% | Added |
| Calamos Advisors LLC | 114,607 | $8.40M | 0.04% | +8,846+8.4% | Added |
| Polar Asset Management Partners Inc. | 113,904 | $8.35M | 0.10% | +113,904 | New |
| Lisanti Capital Growth, LLC | 107,650 | $7.89M | 0.98% | +50,470+88.3% | Added |
| Lord, Abbett & Co. LLC | 98,100 | $7.19M | 0.02% | −95,349−49.3% | Reduced |
| Essex Investment Management Co LLC | 96,721 | $7.09M | 0.82% | +49,103+103.1% | Added |
| DF Dent & Co Inc | 94,200 | $6.91M | 0.07% | +6,857+7.9% | Added |
| Ameriprise Financial Inc | 93,292 | $6.84M | 0.00% | −15,760−14.5% | Reduced |
| M&G Investment Management Ltd | 91,678 | $6.69M | 0.03% | +91,678 | New |
| King Luther Capital Management Corp | 84,204 | $6.17M | 0.03% | +4,224+5.3% | Added |
| Premier Fund Managers Ltd | 82,054 | $6.12M | 0.21% | −26,387−24.3% | Reduced |
| Nuveen Asset Management, LLC | 81,986 | $6.01M | 0.00% | +30,342+58.8% | Added |
| Bank of New York Mellon Corp | 81,355 | $5.97M | 0.00% | +3,342+4.3% | Added |
| Russell Investments Group, Ltd. | 77,897 | $5.71M | 0.01% | −2,114−2.6% | Reduced |
| Oberweis Asset Management Inc | 74,060 | $5.43M | 1.19% | −23,010−23.7% | Reduced |
| Madison Asset Management, LLC | 71,437 | $5.24M | 0.07% | +14,456+25.4% | Added |
| Putnam Investments LLC | 71,336 | $5.23M | 0.01% | +2,474+3.6% | Added |
| Segall Bryant & Hamill, LLC | 69,440 | $5.09M | 0.05% | −14,909−17.7% | Reduced |
| Altium Capital Management LP | 69,000 | $5.06M | 1.17% | +41,635+152.1% | Added |
| Citadel Advisors LLC | 60,005 | $4.40M | 0.00% | −87−0.1% | Reduced |
| Public Employees Retirement System of Ohio | 56,254 | $4.13M | 0.01% | 00.0% | Unchanged |
| ArrowMark Colorado Holdings LLC | 50,844 | $3.73M | 0.03% | −9,834−16.2% | Reduced |
| Two Sigma Advisers, LP | 50,800 | $3.73M | 0.01% | −11,300−18.2% | Reduced |
| Brinker Capital Investments, LLC | 50,161 | $3.68M | 0.05% | +50,161 | New |
| Bank of Montreal | 46,518 | $3.51M | 0.00% | +420+0.9% | Added |
| Morgan Stanley | 47,479 | $3.48M | 0.00% | −88,939−65.2% | Reduced |
| New York State Common Retirement Fund | 45,140 | $3.31M | 0.00% | +14,422+46.9% | Added |
| Swiss National Bank | 43,700 | $3.21M | 0.00% | +2,300+5.6% | Added |
| Two Sigma Investments, LP | 42,938 | $3.15M | 0.01% | −49,286−53.4% | Reduced |
| Swedbank AB | 40,000 | $2.93M | 0.01% | +5,000+14.3% | Added |
| Parametric Portfolio Associates LLC | 35,396 | $2.60M | 0.00% | +1,716+5.1% | Added |
| Rice Hall James & Associates, LLC | 34,337 | $2.52M | 0.09% | −1,482−4.1% | Reduced |
| Perkins Capital Management Inc | 33,150 | $2.43M | 1.38% | −350−1.0% | Reduced |
| Axiom Investors LLC | 31,310 | $2.30M | 0.04% | −17,370−35.7% | Reduced |
| Envestnet Asset Management Inc | 30,422 | $2.23M | 0.00% | +22,569+287.4% | Added |
| California State Teachers Retirement System | 29,374 | $2.15M | 0.00% | +7,402+33.7% | Added |
| Polar Capital Holdings Plc | 28,761 | $2.11M | 0.01% | +28,761 | New |
| Schonfeld Strategic Advisors LLC | 27,413 | $2.01M | 0.02% | −118−0.4% | Reduced |
| Bridgewater Associates, LP | 25,978 | $1.91M | 0.01% | +25,978 | New |
| Alliancebernstein L.P. | 25,300 | $1.85M | 0.00% | +12,200+93.1% | Added |
| Banque Pictet & Cie SA | 23,050 | $1.69M | 0.02% | +1,087+4.9% | 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 |
| Knights of Columbus Asset Advisors LLC | 22,084 | $1.62M | 0.15% | +131+0.6% | Added |
| Parallel Advisors, LLC | 21,791 | $1.60M | 0.07% | +1,791+9.0% | Added |
| State of Wisconsin Investment Board | 21,300 | $1.56M | 0.00% | 00.0% | Unchanged |
| Covenant Partners, LLC | 21,279 | $1.56M | 0.59% | 00.0% | Unchanged |
| Rhumbline Advisers | 20,423 | $1.50M | 0.00% | +5,913+40.8% | Added |
| Advisory Research Inc | 19,752 | $1.45M | 0.10% | −2,168−9.9% | Reduced |
| Signaturefd, LLC | 19,373 | $1.42M | 0.06% | +80.0% | Added |
| United Capital Financial Advisers, LLC | 17,440 | $1.28M | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 17,194 | $1.26M | 0.00% | −15,078−46.7% | Reduced |
| Deutsche Bank AG | 15,372 | $1.13M | 0.00% | +3,658+31.2% | Added |
| Susquehanna International Group, LLP | 14,477 | $1.06M | 0.00% | −29,890−67.4% | Reduced |
| Chartwell Investment Partners, LLC | 14,146 | $1.04M | 0.03% | +127+0.9% | Added |
| Citigroup Inc | 13,710 | $1.00M | 0.00% | +11,993+698.5% | Added |
| Capital Impact Advisors, LLC | 13,203 | $968.0K | 0.31% | +11,172+550.1% | Added |
| Baird Financial Group, Inc. | 12,593 | $923.0K | 0.00% | +230+1.9% | Added |
| Credit Suisse AG | 11,995 | $879.0K | 0.00% | −589−4.7% | Reduced |
| Voya Investment Management LLC | 11,953 | $877.0K | 0.00% | +2,905+32.1% | Added |
| Manufacturers Life Insurance Company, The | 11,959 | $877.0K | 0.00% | +3,777+46.2% | Added |
| American International Group, Inc. | 11,938 | $875.0K | 0.00% | +3,449+40.6% | Added |
| SEI Investments Co | 11,049 | $838.0K | 0.00% | −852−7.2% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 11,170 | $819.0K | 0.00% | +3,394+43.6% | Added |
| Advisors Capital Management, LLC | 10,859 | $796.0K | 0.03% | +10,859 | New |
| ProShare Advisors LLC | 10,031 | $736.0K | 0.00% | +2,758+37.9% | Added |
| Isthmus Partners, LLC | 9,577 | $702.0K | 0.12% | +9,577 | New |
| Pictet & Cie (Europe) SA | 9,386 | $688.0K | 0.02% | +1,266+15.6% | Added |
| Portolan Capital Management, LLC | 9,127 | $669.0K | 0.05% | +9,127 | New |
| Qube Research & Technologies Ltd | 9,067 | $665.0K | 0.01% | +718+8.6% | Added |