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, Q3 2023
Institutional positions in Castle Biosciences Inc as of Sep 30, 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
- 135
- +6 vs. Q2 2023
- Shares held
- 23.2M
- +181.5K (+0.8%) vs. Q2 2023
- Total value
- $391.0M
- +$74.4M (+23.5%) vs. Q2 2023
- New holders
- 22
- 52 more added
- Sold out
- 16
- 41 more reduced
1 institution that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Stephens Inc | 96,951 | $1.64M | 0.03% | −10,947−10.1% | Reduced |
| Public Employees Retirement System of Ohio | 100,254 | $1.69M | 0.01% | +18,679+22.9% | Added |
| Renaissance Technologies LLC | 106,800 | $1.80M | 0.00% | −65,600−38.1% | Reduced |
| Advisors Capital Management, LLC | 116,890 | $1.97M | 0.05% | +37,318+46.9% | Added |
| Cubist Systematic Strategies, LLC | 136,537 | $2.31M | 0.03% | +88,647+185.1% | Added |
| Schonfeld Strategic Advisors LLC | 148,030 | $2.50M | 0.02% | +110,500+294.4% | Added |
| Goldman Sachs Group Inc | 151,751 | $2.56M | 0.00% | +70,030+85.7% | Added |
| Intrinsic Edge Capital Management LLC | 156,270 | $2.64M | 0.33% | −199,936−56.1% | Reduced |
| Walleye Capital LLC | 170,786 | $2.88M | 0.04% | +170,786 | New |
| Nuveen Asset Management, LLC | 176,284 | $2.98M | 0.00% | −240,130−57.7% | Reduced |
| Charles Schwab Investment Management Inc | 200,989 | $3.39M | 0.00% | +14,994+8.1% | Added |
| Banque Pictet & Cie SA | 203,275 | $3.43M | 0.04% | +19,472+10.6% | Added |
| Parkman Healthcare Partners LLC | 224,592 | $3.79M | 0.70% | +76,590+51.7% | Added |
| Northern Trust Corp | 243,846 | $4.12M | 0.00% | +6,762+2.9% | Added |
| New York State Common Retirement Fund | 245,868 | $4.15M | 0.01% | +4,635+1.9% | Added |
| Portolan Capital Management, LLC | 253,028 | $4.27M | 0.40% | −178,446−41.4% | Reduced |
| Ameriprise Financial Inc | 266,000 | $4.49M | 0.00% | −51,954−16.3% | Reduced |
| Soleus Capital Management, L.P. | 283,500 | $4.79M | 0.48% | +283,500 | New |
| Invenomic Capital Management LP | 285,957 | $4.83M | 0.20% | +7,139+2.6% | Added |
| GW&K Investment Management, LLC | 493,982 | $8.34M | 0.08% | +5,237+1.1% | Added |
| Citadel Advisors LLC | 518,058 | $8.75M | 0.01% | +461,775+820.5% | Added |
| Geode Capital Management, LLC | 536,236 | $9.06M | 0.00% | +38,552+7.7% | Added |
| Jacobs Levy Equity Management, Inc | 547,403 | $9.25M | 0.05% | +289,252+112.0% | Added |
| Dimensional Fund Advisors LP | 555,401 | $9.38M | 0.00% | +65,818+13.4% | Added |
| State Street Corp | 565,164 | $9.55M | 0.00% | +29,836+5.6% | Added |
| Millennium Management LLC | 595,096 | $10.1M | 0.01% | −440,497−42.5% | Reduced |
| Palisade Capital Management LLC | 602,261 | $10.2M | 0.28% | +570.0% | Added |
| Kornitzer Capital Management Inc | 648,224 | $10.9M | 0.23% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 946,620 | $16.0M | 0.35% | +946,620 | New |
| Bellevue Group AG | 1,228,031 | $20.7M | 0.33% | +103,988+9.3% | Added |
| Vanguard Group Inc | 1,439,388 | $24.3M | 0.00% | +11,967+0.8% | Added |
| Principal Financial Group Inc | 1,482,170 | $25.0M | 0.02% | +122,169+9.0% | Added |
| BlackRock Inc. | 2,136,180 | $36.1M | 0.00% | +4,480+0.2% | Added |
| Granahan Investment Management Inc | 2,487,673 | $42.0M | 1.50% | −41,758−1.7% | Reduced |
| Wasatch Advisors Inc | 2,780,744 | $47.0M | 0.30% | −306,257−9.9% | Reduced |
| First Light Asset Management, LLC | 0 | $0 | 0.00% | −160,126−100.0% | Sold out |
| Greenhouse Funds LLLP | 0 | $0 | 0.00% | −150,670−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −116,977−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −109,995−100.0% | Sold out |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −91,978−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −63,773−100.0% | Sold out |
| Fan Yu | 0 | $0 | 0.00% | −20,592−100.0% | Sold out |
| Isthmus Partners, LLC | 0 | $0 | 0.00% | −15,342−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −14,765−100.0% | Sold out |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −13,398−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −12,941−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −12,699−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −11,551−100.0% | Sold out |
| Bollard Group LLC | 0 | $0 | 0.00% | −139−100.0% | Sold out |
| Baystate Wealth Management LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| BerganKDV Wealth Management, LLC | – | – | – | – | Not filed |