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D. E. Shaw & Co., Inc.

Position in CSTL — Castle Biosciences Inc

CIK 1009207 New York, NY

Position in CSTL

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$5,203,765
-$1,008,915 QoQ
Shares Held
211,966
+32.7% QoQ
Ownership
0.699%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2020
15 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CSTL Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Mar 31, 2026

D. E. Shaw & Co., Inc. holds $1,656,514,763 across 27 Diagnostics & Research names. CSTL ranks #18 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CSTL

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15 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $5,203,765 211,966
2025-12-31 $6,212,680 159,709
2025-09-30 $2,108,820 92,614
2025-06-30 $3,026,039 148,190
2025-03-31 $3,787,322 189,177
2024-12-31 $2,413,503 90,563
2024-03-31 $296,411 13,382
2023-12-31 $1,130,015 52,364
2022-12-31 $681,176 28,937
2022-09-30 $718,034 27,532
2021-09-30 $472,416 7,104
2021-03-31 $1,311,214 19,153
2020-12-31 $1,281,826 19,089
2020-09-30 $442,315 8,597
2020-06-30 $657,728 17,451