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Castle Biosciences (CSTL) Ownership Overview
1.89% Insiders
30.78% Mutual Funds
1.44% Other Institutional Investors
15.81% ETFs
50.08% Public Companies and
Individual Investors
The ownership structure of Castle Biosciences (CSTL) stock is a mix of institutional, retail, and individual investors. Approximately 48.03% of the company’s stock is owned by Institutional Investors, 1.89% is owned by Insiders, and 50.08% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Aug 26, 2026 | xxxxxxxxxxxxx | $837711 | |
Aug 18, 2026 | xxxxxxxxxxxxx | $741511 | |
Mar 09, 2026 | xxxxxxxxxxxxx | $210727 | |
Dec 19, 2025 | xxxxxxxxxxxxx | $585247 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Jun 30, 2026 | xxxxxxxxxxxxx | $213267 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 2,281,563 | Institution | 7.47% | 87,862,991 | |
| 1,725,077 | Institution | 5.65% | 66,432,715 | |
| 1,499,195 | Institution | 4.91% | 57,733,999 | |
| 1,195,359 | Institution | 3.91% | 46,033,275 | |
| 766,253 | Institution | 2.51% | 29,508,403 | |
| 727,106 | Institution | 2.38% | 28,000,852 | |
| 572,916 | Institution | 1.88% | 22,062,995 | |
| 412,146 | Institution | 1.35% | 15,871,742 | |
| 410,720 | Institution | 1.34% | 15,816,827 | |
| 374,397 | Institution | 1.23% | 14,418,028 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 2,281,563 | Institution | 7.47% | 87,862,991 | |
| 1,195,359 | Institution | 3.91% | 46,033,275 | |
| 766,253 | Institution | 2.51% | 29,508,403 | |
| 727,106 | Institution | 2.38% | 28,000,852 | |
| 572,916 | Institution | 1.88% | 22,062,995 | |
| 410,720 | Institution | 1.34% | 15,816,827 | |
| 374,397 | Institution | 1.23% | 14,418,028 | |
| 293,222 | Institution | 0.96% | 11,291,979 | |
| 279,452 | Institution | 0.91% | 10,761,697 | |
| 276,685 | Institution | 0.91% | 10,655,139 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 866,498 | Institution | 2.84% | 30,786,674 | |
| 754,738 | Institution | 2.47% | 27,683,790 | |
| 344,862 | Institution | 1.13% | 12,252,947 | |
| 282,412 | Institution | 0.92% | 10,358,872 | |
| 235,000 | Institution | 0.77% | 9,049,850 | |
| 225,927 | Institution | 0.74% | 8,287,002 | |
| 176,898 | Institution | 0.58% | 6,488,619 | |
| 174,033 | Institution | 0.57% | 6,183,392 | |
| 162,647 | Institution | 0.53% | 5,965,892 | |
| 152,668 | Institution | 0.50% | 5,599,862 |
FAQ
Who Owns Castle Biosciences (CSTL)?
According to the latest TipRanks data, approximately 1.44% of the company's stock is held by institutional investors, 1.89% is held by insiders, and 50.08% is held by retail investors.
What percentage of Castle Biosciences (CSTL) stock is held by institutional investors?
According to the latest TipRanks data, approximately 1.44% of Castle Biosciences (CSTL) stock is held by institutional investors.
What percentage of Castle Biosciences (CSTL) stock is held by retail investors?
According to the latest TipRanks data, approximately 50.08% of Castle Biosciences (CSTL) stock is held by retail investors.
Who owns the most shares of Castle Biosciences (CSTL)?
COLUMBIA FUNDS SERIES TRUST I owns the most shares of Castle Biosciences (CSTL).
What is the significance of the ownership structure for a publicly traded company?
The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.