CSTL — CASTLE BIOSCIENCES INC

Ownership history in Dynamic Technology Lab Private Ltd  ·  8 quarters on record

This page tracks every 13F SEC filing in which Dynamic Technology Lab Private Ltd reported a position in CASTLE BIOSCIENCES INC (CSTL). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.13% (2024 Q3)
Avg. % of fund
0.07%
First filed
2020 Q1
Last filed
2025 Q3
Quarters held
8
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 ADDED 29,310 +8,075 +38.0% 0.11% $667K $22.77
2025 Q1 ADDED 21,235 +3,605 +20.4% 0.06% $425K $20.02
2024 Q4 REDUCED 17,630 -26,264 -59.8% 0.08% $470K $26.65
2024 Q3 ADDED 43,894 +35,184 +403.9% 0.13% $1.3M $28.52
2021 Q4 ADDED 8,710 +5,570 +177.4% 0.04% $373K $42.87
2021 Q2 REDUCED 3,140 -1,431 -31.3% 0.02% $230K $73.33
2020 Q3 REDUCED 4,571 -6,741 -59.6% 0.04% $235K $51.45
2020 Q1 INITIATED 11,312 — — 0.07% $337K $29.81
% of Fund (quarterly)    CSTL price (monthly, adj. close)

Other funds also holding CSTL

As of 2025 Q4 — sorted by position size

AIGH Capital Management LLC 3Y 5.88% Portolan Capital Management, LLC 3Y 7Y 3.6% Birchview Capital, LP 3Y 7Y 1.84% PERKINS CAPITAL MANAGEMENT INC 3Y 7Y 0.87% SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 3Y 7Y 0.86% RTW INVESTMENTS, LP 3Y 7Y 0.82% PALISADE CAPITAL MANAGEMENT, LP 3Y 7Y 0.65% Parkman Healthcare Partners LLC 3Y 0.56% Green Alpha Advisors, LLC 3Y 0.36% Informed Momentum Co LLC 3Y 7Y 0.32%
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