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, Q1 2025
Institutional positions in Castle Biosciences Inc as of Mar 31, 2025. 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
- 180
- −14 vs. Q4 2024
- Shares held
- 25.9M
- −168.1K (−0.6%) vs. Q4 2024
- Total value
- $516.3M
- −$177.7M (−25.6%) vs. Q4 2024
- New holders
- 30
- 76 more added
- Sold out
- 44
- 54 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sherbrooke Park Advisers LLC | 19,439 | $389.2K | 0.18% | +7,067+57.1% | Added |
| Russell Investments Group, Ltd. | 18,669 | $372.6K | 0.00% | +11,457+158.9% | Added |
| STRS Ohio | 18,300 | $366.4K | 0.00% | 00.0% | Unchanged |
| CWM Advisors, LLC | 17,153 | $343.4K | 0.04% | −28,597−62.5% | Reduced |
| Oak Harvest Investment Services | 16,883 | $338.0K | 0.05% | +9,156+118.5% | Added |
| Centiva Capital, LP | 16,802 | $336.4K | 0.02% | −6,213−27.0% | Reduced |
| Harbor Capital Advisors, Inc. | 16,595 | $332.0K | 0.02% | −101,905−86.0% | Reduced |
| Caxton Associates LLP | 16,440 | $329.1K | 0.01% | +16,440 | New |
| Wells Fargo & Company | 16,347 | $327.3K | 0.00% | +972+6.3% | Added |
| Intech Investment Management LLC | 16,078 | $321.9K | 0.00% | +4,500+38.9% | Added |
| MetLife Investment Management | 15,729 | $314.9K | 0.00% | −288−1.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 15,441 | $309.1K | 0.00% | +655+4.4% | Added |
| Quantbot Technologies LP | 15,287 | $306.0K | 0.01% | +15,287 | New |
| First Bank & Trust | 15,136 | $303.0K | 0.06% | +6,512+75.5% | Added |
| Man Group plc | 14,514 | $290.6K | 0.00% | +1,212+9.1% | Added |
| Stephens Inc | 13,639 | $273.1K | 0.00% | −800−5.5% | Reduced |
| Simon Quick Advisors, LLC | 13,595 | $272.2K | 0.02% | +20+0.1% | Added |
| Mach-1 Financial Group, Inc. | 13,313 | $266.5K | 0.08% | +13,313 | New |
| Diversify Wealth Management, LLC | 13,102 | $260.1K | 0.02% | +717+5.8% | Added |
| Winton Group Ltd | 12,869 | $257.6K | 0.02% | +12,869 | New |
| Corebridge Financial, Inc. | 12,866 | $257.6K | 0.00% | +60.0% | Added |
| Brevan Howard Capital Management LP | 12,205 | $244.3K | 0.01% | +12,205 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 12,081 | $241.9K | 0.00% | −1,561−11.4% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 11,753 | $235.3K | 0.00% | +11,753 | New |
| Magnetar Financial LLC | 11,226 | $224.7K | 0.00% | +11,226 | New |
| Creative Planning | 11,100 | $222.2K | 0.00% | +1,560+16.4% | Added |
| Great West Life Assurance Co | 10,713 | $215.0K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 10,383 | $207.9K | 0.00% | +908+9.6% | Added |
| Lido Advisors, LLC | 10,031 | $200.8K | 0.00% | −493−4.7% | Reduced |
| Royal Bank of Canada | 9,087 | $182.0K | 0.00% | +191+2.1% | Added |
| Quest Partners LLC | 6,008 | $120.3K | 0.01% | −4,223−41.3% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 5,837 | $116.9K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 5,719 | $114.5K | 0.01% | −220−3.7% | Reduced |
| Lazard Asset Management LLC | 4,928 | $98.0K | 0.00% | +4,928 | New |
| KLP Kapitalforvaltning AS | 4,800 | $96.1K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 4,142 | $83.0K | 0.00% | +3,699+835.0% | Added |
| Assetmark, Inc | 3,980 | $79.7K | 0.00% | −432−9.8% | Reduced |
| Amundi | 4,137 | $79.4K | 0.00% | +4,111+15,811.5% | Added |
| C M Bidwell & Associates Ltd | 3,180 | $63.7K | 0.04% | +482+17.9% | Added |
| Harbour Investments, Inc. | 2,500 | $50.0K | 0.00% | +2,500 | New |
| Ameritas Investment Partners, Inc. | 2,450 | $49.0K | 0.00% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 2,400 | $48.0K | 0.00% | +1,500+166.7% | Added |
| First Horizon Advisors, Inc. | 1,810 | $36.2K | 0.00% | −200−10.0% | Reduced |
| Point72 (DIFC) Ltd | 1,773 | $35.5K | 0.00% | +539+43.7% | Added |
| Covestor Ltd | 1,219 | $24.0K | 0.02% | +283+30.2% | Added |
| FMR LLC | 1,156 | $23.1K | 0.00% | +75+6.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 932 | $18.6K | 0.00% | −1−0.1% | Reduced |
| Arcadia Investment Management Corp | 904 | $18.1K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 893 | $18.0K | 0.00% | +60+7.2% | Added |
| Tower Research Capital LLC (TRC) | 782 | $15.7K | 0.00% | −10,483−93.1% | Reduced |
| GF Fund Management Co. Ltd. | 716 | $14.3K | 0.00% | +128+21.8% | Added |
| Hughes Financial Services, LLC | 435 | $8.60K | 0.00% | +435 | New |
| Coldstream Capital Management Inc | 342 | $6.85K | 0.00% | +342 | New |
| Nisa Investment Advisors, LLC | 336 | $6.73K | 0.00% | −109−24.5% | Reduced |
| Sterling Capital Management LLC | 316 | $6.33K | 0.00% | −256−44.8% | Reduced |
| GAMMA Investing LLC | 218 | $4.36K | 0.00% | −4−1.8% | Reduced |
| Advisor Group Holdings, Inc. | 202 | $4.04K | 0.00% | +188+1,342.9% | Added |
| True Wealth Design, LLC | 201 | $4.03K | 0.00% | +200+20,000.0% | Added |
| Lindbrook Capital, LLC | 179 | $3.58K | 0.00% | +7+4.1% | Added |
| Caitong International Asset Management Co., Ltd | 156 | $3.12K | 0.00% | +156 | New |
| Rossby Financial, LCC | 142 | $2.93K | 0.00% | +142 | New |
| The PNC Financial Services Group, Inc. | 120 | $2.40K | 0.00% | +120 | New |
| Principal Securities, Inc. | 90 | $2.40K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 86 | $2.00K | 0.00% | 00.0% | Unchanged |
| BFSG, LLC | 90 | $1.80K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 58 | $1.16K | 0.00% | +8+16.0% | Added |
| Massmutual Trust Co FSB | 51 | $1.02K | 0.00% | −39−43.3% | Reduced |
| Spire Wealth Management | 50 | $1.00K | 0.00% | +50 | New |
| Simplex Trading, LLC | 97 | $1.00K | 0.00% | −2,967−96.8% | Reduced |
| EverSource Wealth Advisors, LLC | 47 | $941 | 0.00% | +38+422.2% | Added |
| Bryn Mawr Trust Co | 46 | $921 | 0.00% | +46 | New |
| Steward Partners Investment Advisory, LLC | 31 | $621 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 25 | $499 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 24 | $480 | 0.00% | −1,178−98.0% | Reduced |
| Parkside Financial Bank & Trust | 20 | $401 | 0.00% | +20 | New |
| Rothschild Investment LLC | 20 | $400 | 0.00% | −20−50.0% | Reduced |
| Missouri Trust & Investment Co | 19 | $380 | 0.00% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 11 | $221 | 0.00% | +11 | New |
| Farther Finance Advisors, LLC | 5 | $99 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1 | $20 | 0.00% | 00.0% | Unchanged |
| Proequities, Inc. | 0 | $0 | 0.00% | −6,960−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −252,917−100.0% | Sold out |
| Next Century Growth Investors LLC | 0 | $0 | 0.00% | −235,214−100.0% | Sold out |
| Intrinsic Edge Capital Management LLC | 0 | $0 | 0.00% | −232,711−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −215,322−100.0% | Sold out |
| Granahan Investment Management Inc | 0 | $0 | 0.00% | −110,824−100.0% | Sold out |
| Public Employees Retirement System of Ohio | 0 | $0 | 0.00% | −74,132−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −46,265−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −28,903−100.0% | Sold out |
| LPL Financial LLC | 0 | $0 | 0.00% | −23,043−100.0% | Sold out |
| Huntleigh Advisors, Inc. | 0 | $0 | 0.00% | −22,167−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −21,839−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −20,218−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −19,600−100.0% | Sold out |
| Alpha DNA Investment Management LLC | 0 | $0 | 0.00% | −15,174−100.0% | Sold out |
| Counterpoint Mutual Funds LLC | 0 | $0 | 0.00% | −13,587−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −12,405−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −11,400−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −10,716−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −10,395−100.0% | Sold out |