Castle Biosciences Inc.
CSTL | NASDAQ
$34.99
-$0.35 (-0.99%)
At close: Sep 21, 2026, 4:00 PM ET
$34.99
$0 (0.00%)
After-hours:
Sep 21, 2026, 7:30 PM ET
Institutional Ownership
Net InflowTotal Institutions
190
Total Ownership
92.37%
Capital Flow
+$384.26M
Shares Change
+299.65K
Ownership Distribution
Institutions (92.37%)
Others (7.63%)
Institutional Sentiment
Overall: bullishEquity Sentiment & Activity
bullishNew Positions
28
Increased Positions
101
Reduced Positions
61
Closed Positions
38
New (28)
Increased (101)
Reduced (61)
Closed (38)
Options Sentiment & Activity
bullishPut/Call Ratio
0.194
Call Flow
64,600
Put Flow
12,500
Calls (84%)
Puts (16%)
Super Investors
| Super Investor / Fund | Ownership | Portfolio Weight | Shares | Market Value | |
|---|---|---|---|---|---|
| Renaissance Technologies LLC | 1.24% -30.33% | 0.02% | 371.2K | 13.12M | |
| Point72 Asset Management LP | 1.20% 0.00% | 0.02% | 357.32K | 12.63M | |
| Tudor Investment Corp ET AL | 0.05% -93.51% | < 0.01% | 14.46K | 511.09K |
Top Shareholders
| Institution | Ownership | Portfolio Weight | Shares | Market Value | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 9.98% -6.84% | < 0.01% -37.33% | 2.98M -3.94% | 73.23M -39.38% | |
| Rtw Investments, LP | 9.23% +26.46% | 0.67% -18.25% | 2.76M +30.40% | 67.72M -17.70% | |
| Principal Financial Group Inc | 5.92% -5.05% | 0.02% -35.36% | 1.77M -2.09% | 43.45M -38.21% |
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