Security key
14843C105
CASTLE BIOSCIENCES INC - Common Stock, $0.001 par value per share (CSTL)
CUSIP: 14843C105
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock, $0.001 par value per share
- Shares outstanding
- 30,343,438
- Total 13F shares
- 27,312,139
- Share change
- +805,646
- Total reported value
- $1,062,098,938
- Put/Call ratio
- 0%
- Price per share
- $38.90
- Number of holders
- 195
- Value change
- +$35,010,217
- Number of buys
- 99
- Number of sells
- 85
Report period
Q4 2025
Institutions
195
Top holders
10
CSTL full security history
Newer quarter: Q1 2026
Previous quarter: Q3 2025
CASTLE BIOSCIENCES INC SEC filings
CASTLE BIOSCIENCES INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 14843C105
Recent filing periods:
Top shareholders of CSTL - CASTLE BIOSCIENCES INC - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
8.2%
from 13D/G
|
3,189,896
|
$72,633,931 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
7.2%
|
2,172,318
|
$49,463,681 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
|
Company |
3.9%
|
1,143,799
|
$44,494,010 | -$12,848,347 | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
5.9%
|
1,794,355
|
$40,857,463 | — | 30 Sep 2025 | |
| Portolan Capital Management, LLC |
13F
|
Company |
5%
|
1,515,111
|
$34,499,077 | — | 30 Sep 2025 | |
| Nuveen, LLC |
13F
|
Company |
3.2%
|
957,081
|
$21,792,735 | — | 30 Sep 2025 | |
| WASATCH ADVISORS LP |
13D/G
13F
|
Company |
3.5%
|
998,455
|
$20,078,930 | $0 | 31 Mar 2025 | |
| BRAIDWELL LP |
13F
|
Company |
2.7%
|
822,735
|
$18,733,676 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.4%
|
724,080
|
$16,487,302 | — | 30 Sep 2025 | |
| AIGH Capital Management LLC |
13F
|
Company |
2.3%
|
707,287
|
$16,104,925 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
698,610
|
$15,909,607 | — | 30 Sep 2025 | |
| Allianz Asset Management GmbH |
13F
|
Company |
2.1%
|
648,351
|
$14,762,953 | — | 30 Sep 2025 | |
| PALISADE CAPITAL MANAGEMENT, LP |
13F
|
Company |
2.1%
|
638,656
|
$14,542,197 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
1.9%
|
575,089
|
$13,094,777 | — | 30 Sep 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.9%
|
562,600
|
$12,810,402 | — | 30 Sep 2025 | |
| SCHRODER INVESTMENT MANAGEMENT GROUP |
13F
|
Company |
1.6%
|
494,950
|
$11,067,082 | — | 30 Sep 2025 | |
| Parkman Healthcare Partners LLC |
13F
|
Company |
1.6%
|
475,568
|
$10,828,683 | — | 30 Sep 2025 | |
| KABAKOFF DAVID S |
3/4/5
|
Director |
—
mixed-class rows
|
507,786
mixed-class rows
|
$10,282,139 | — | 17 Jun 2021 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.5%
|
451,652
|
$10,281,000 | — | 30 Sep 2025 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC |
13F
|
Company |
1.3%
|
400,000
|
$9,108,000 | — | 30 Sep 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
1.2%
|
367,888
|
$8,376,810 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.1%
|
345,099
|
$7,857,904 | — | 30 Sep 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
1.1%
|
336,958
|
$7,672,533 | — | 30 Sep 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
1.1%
|
335,891
|
$7,648,238 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
1%
|
315,370
|
$7,180,975 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.96%
|
291,362
|
$6,634,313 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.93%
|
282,267
|
$6,427,220 | — | 30 Sep 2025 | |
| KORNITZER CAPITAL MANAGEMENT INC /KS |
13F
|
Company |
0.92%
|
278,314
|
$6,337,210 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.89%
|
269,631
|
$6,139,520 | — | 30 Sep 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.84%
|
256,233
|
$5,834,424 | — | 30 Sep 2025 | |
| Advisors Capital Management, LLC |
13F
|
Company |
0.84%
|
254,200
|
$5,788,134 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.83%
|
250,915
|
$5,713,335 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.78%
|
238,154
|
$5,422,767 | — | 30 Sep 2025 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
0.76%
|
230,046
|
$5,238,147 | — | 30 Sep 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.73%
|
220,961
|
$5,031,282 | — | 30 Sep 2025 | |
| SUMMIT WEALTH GROUP LLC / CO |
13F
|
Company |
0.4%
|
122,494
|
$4,507,886 | — | 30 Sep 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.59%
|
178,442
|
$4,063,124 | — | 30 Sep 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.58%
|
177,180
|
$4,034,389 | — | 30 Sep 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.52%
|
156,513
|
$3,563,801 | — | 30 Sep 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.46%
|
139,914
|
$3,185,842 | — | 30 Sep 2025 | |
| Birchview Capital, LP |
13F
|
Company |
0.36%
|
110,600
|
$2,518,362 | — | 30 Sep 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
0.33%
|
99,787
|
$2,272,150 | — | 30 Sep 2025 | |
| Empowered Funds, LLC |
13F
|
Company |
0.32%
|
98,180
|
$2,235,559 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.31%
|
94,016
|
$2,140,735 | — | 30 Sep 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.31%
|
92,614
|
$2,108,821 | — | 30 Sep 2025 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.29%
|
87,691
|
$1,996,723 | — | 30 Sep 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.28%
|
85,435
|
$1,945,355 | — | 30 Sep 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.27%
|
82,512
|
$1,878,798 | — | 30 Sep 2025 | |
| Orion Porfolio Solutions, LLC |
13F
|
Company |
0.25%
|
76,344
|
$1,738,353 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.24%
|
73,068
|
$1,663,758 | — | 30 Sep 2025 |
Institutional Holders of CASTLE BIOSCIENCES INC - Common Stock, $0.001 par value per share (CSTL) as of Q4 2025
As of 31 Dec 2025,
CASTLE BIOSCIENCES INC - Common Stock, $0.001 par value per share (CSTL) was held by
195 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
27,312,139 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, RTW INVESTMENTS, LP, PRINCIPAL FINANCIAL GROUP INC, Portolan Capital Management, LLC, DIMENSIONAL FUND ADVISORS LP, SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, and AIGH Capital Management LLC.
This page lists
195
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
170
Q4 2025 holders
195
Holder diff
25
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.