Institutional Ownership
Castle Biosciences Inc
CUSIP 14843C105COMCSTLQ1 2026
Institutional Holders
178
13F filers
Shares Held
25.29M
Aggregate institutional
Institutional Value
$598.22M
Q1 2026
Net New Holders
-13
22 new · 35 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions22
Increased71
Decreased61
Sold out35
Institutional Holders
178 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | 2.98M | $73.23M | −122.3K | Reduced |
| 2 | Rtw Investments, LP | 2.76M | $67.72M | +643.1K | Added |
| 3 | Principal Financial Group Inc | 1.77M | $43.45M | −37.8K | Reduced |
| 4 | Portolan Capital Management, LLC | 1.35M | $33.15M | −379.2K | Reduced |
| 5 | Dimensional Fund Advisors LP | 1.04M | $25.52M | −104.0K | Reduced |
| 6 | Summit Partners Public Asset Management, LLC | 940.7K | $23.09M | −118.0K | Reduced |
| 7 | Allianz Asset Management Gmbh | 811.3K | $19.92M | +189.0K | Added |
| 8 | State Street Corp | 769.1K | $18.88M | +32.6K | Added |
| 9 | Geode Capital Management, LLC | 728.1K | $17.88M | +13.2K | Added |
| 10 | Aigh Capital Management LLC | 590.6K | $14.50M | −34.1K | Reduced |
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