CASTLEARK MANAGEMENT LLC

Q4 2025 13F-HR Holdings

Location
Chicago, IL
Holdings as of
12/31/2025
Date filed
2/13/2026
Form type
13F-HR
Num holdings
294
Total value ($000)
$3,406,475
Net value change ($000)
-160,104 (-4.5%)
New positions
63
Sold out positions
53
Turnover %
28.7%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/17/2025 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
LLY 53,676 157.9%
ULTA 30,215 NEW
GOOGL 28,563 31.4%
AMZN 23,215 27.1%
AMD 22,432 NEW
GILD 18,384 117.4%
BKNG 18,182 163.5%
TPR 18,154 NEW
ODFL 15,010 NEW
TSLA 11,392 915.0%
Top Reduces (Value $000, Stocks/ETFs)
CARK -322,061 -100.0%
NFLX -65,878 -100.0%
META -27,424 -25.3%
DXCM -20,204 -100.0%
XRT -16,221 -100.0%
ORCL -14,399 -100.0%
AVAV -10,837 -81.3%
LIF -10,715 -100.0%
HD -10,676 -70.7%
PNC -9,693 -100.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type