- Type / Class
- Equity / Common Stock
- Shares outstanding
- 29,378,292
- Total 13F shares
- 2,553,202
- Share change
- +39,146
- Total reported value
- $62,677,518
- Price per share
- $24.55
- Number of holders
- 37
- Value change
- -$394,456
- Number of buys
- 13
- Number of sells
- 25
Quarterly Holders Quick Answers
What is CUSIP 14843C105?
CUSIP 14843C105 identifies CSTL - CASTLE BIOSCIENCES INC - Common Stock in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Next holder-history checks
These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 14843C105:
Top shareholders of CSTL - CASTLE BIOSCIENCES INC - Common Stock (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
|
3,105,246
|
$120,794,069 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
7.5%
|
2,199,829
|
$85,573,349 | — | 31 Dec 2025 | |
| RTW INVESTMENTS, LP |
13D/G
13F
|
Company |
7.2%
|
2,115,237
|
$84,757,547 | $0 | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
6.2%
|
1,807,644
|
$70,317,352 | — | 31 Dec 2025 | |
| Portolan Capital Management, LLC |
13F
13D/G
|
Company |
5.6%
from 13D/G
|
1,729,463
|
$67,276,111 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
|
Company |
3.9%
from 13D/G
|
1,143,799
|
$44,494,673 | — | 31 Dec 2025 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC |
13F
|
Company |
3.6%
|
1,058,725
|
$41,184,403 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.5%
|
736,454
|
$28,648,061 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.4%
|
714,913
|
$27,814,871 | — | 31 Dec 2025 | |
| AIGH Capital Management LLC |
13F
|
Company |
2.1%
|
624,719
|
$24,301,569 | — | 31 Dec 2025 | |
| Allianz Asset Management GmbH |
13F
|
Company |
2.1%
|
622,299
|
$24,207,431 | — | 31 Dec 2025 | |
| PALISADE CAPITAL MANAGEMENT, LP |
13F
|
Company |
1.9%
|
567,777
|
$22,086,525 | — | 31 Dec 2025 | |
| WASATCH ADVISORS LP |
13F
13D/G
|
Company |
3.5%
from 13D/G
|
537,241
|
$20,898,675 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.8%
|
524,681
|
$20,410,091 | — | 31 Dec 2025 | |
| SCHRODER INVESTMENT MANAGEMENT GROUP |
13F
|
Company |
1.7%
|
492,161
|
$19,346,849 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.7%
|
493,100
|
$19,181,590 | — | 31 Dec 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.3%
|
390,406
|
$15,180,000 | — | 31 Dec 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
1.3%
|
388,491
|
$15,112,300 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1.2%
|
366,356
|
$14,251,249 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
1.1%
|
308,914
|
$12,016,755 | — | 31 Dec 2025 | |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
|
Company |
1%
|
305,000
|
$11,864,500 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.98%
|
287,235
|
$11,173,441 | — | 31 Dec 2025 | |
| KORNITZER CAPITAL MANAGEMENT INC /KS |
13F
|
Company |
0.91%
|
267,733
|
$10,414,814 | — | 31 Dec 2025 | |
| KABAKOFF DAVID S |
3/4/5
|
Director |
—
mixed-class rows
|
507,786
mixed-class rows
|
$10,282,139 | — | 17 Jun 2021 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.9%
|
263,019
|
$10,231,439 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.89%
|
262,243
|
$10,201,253 | — | 31 Dec 2025 | |
| Advisors Capital Management, LLC |
13F
|
Company |
0.85%
|
250,677
|
$9,751,335 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.84%
|
246,920
|
$9,605,188 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.83%
|
242,535
|
$9,434,617 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.8%
|
235,518
|
$9,161,650 | — | 31 Dec 2025 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
0.79%
|
233,046
|
$9,065,489 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.74%
|
218,560
|
$8,501,984 | — | 31 Dec 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
0.7%
|
205,002
|
$7,974,578 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.69%
|
203,577
|
$7,919,150 | — | 31 Dec 2025 | |
| BRAIDWELL LP |
13F
|
Company |
0.6%
|
177,183
|
$6,892,419 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.57%
|
168,646
|
$6,560,329 | — | 31 Dec 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.57%
|
167,178
|
$6,503,224 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.54%
|
159,709
|
$6,212,680 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.54%
|
159,171
|
$6,134,450 | — | 31 Dec 2025 | |
| Kristen M. Oelschlager |
3/4/5
|
Chief Operating Officer |
—
mixed-class rows
|
181,383
mixed-class rows
|
$5,914,637 | -$1,957,834 | 03 Mar 2026 | |
| Parkman Healthcare Partners LLC |
13F
|
Company |
0.51%
|
150,558
|
$5,856,706 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.51%
|
150,011
|
$5,835,428 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.48%
|
141,873
|
$5,518,860 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.46%
|
135,461
|
$5,269,433 | — | 31 Dec 2025 | |
| Empowered Funds, LLC |
13F
|
Company |
0.42%
|
121,920
|
$4,742,688 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.41%
|
119,458
|
$4,646,916 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.31%
|
90,032
|
$3,502,245 | — | 31 Dec 2025 | |
| Tobin W. Juvenal |
3/4/5
|
Chief Commercial Officer |
—
mixed-class rows
|
143,120
mixed-class rows
|
$3,397,994 | -$1,213,070 | 12 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.3%
|
86,984
|
$3,383,662 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.29%
|
84,066
|
$3,270,167 | — | 31 Dec 2025 |
Institutional Holders of CASTLE BIOSCIENCES INC - Common Stock (CSTL) as of Q1 2026
As of 31 Mar 2026,
CASTLE BIOSCIENCES INC - Common Stock (CSTL) was held by
37 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
2,553,202 shares.
The largest 10 holders included
AIGH Capital Management LLC, Nuveen, LLC, WASATCH ADVISORS LP, KORNITZER CAPITAL MANAGEMENT INC /KS, Advisors Capital Management, LLC, SG Americas Securities, LLC, HARBOR CAPITAL ADVISORS, INC., STRS OHIO, TRUIST FINANCIAL CORP, and Y-Intercept (Hong Kong) Ltd.
This page lists
37
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
195
Q1 2026 holders
37
Holder diff
-158
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 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.