CASTLEARK MANAGEMENT LLC

Q1 2026 13F-HR Holdings

Location
Chicago, IL
Holdings as of
3/31/2026
Date filed
5/15/2026
Form type
13F-HR
Num holdings
292
Total value ($000)
$3,022,182
Net value change ($000)
-384,293 (-11.3%)
New positions
53
Sold out positions
55
Turnover %
24.6%
Sector allocation + QoQ delta (equities-only)
Prev filing: 2/13/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q4 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)
FANG 28,684 NEW
CVX 28,252 NEW
BKR 21,221 878.0%
CF 16,769 NEW
RRC 15,937 610.6%
VCLT 15,564 86.8%
GILD 13,646 40.1%
PR 13,452 NEW
XOM 10,936 NEW
TPR 10,699 58.9%
Top Reduces (Value $000, Stocks/ETFs)
MSFT -80,915 -45.3%
AMZN -57,776 -53.0%
NVDA -43,222 -16.5%
BX -37,651 -100.0%
EFA -33,378 -100.0%
PODD -23,011 -100.0%
LLY -20,087 -22.9%
MCHP -19,610 -59.7%
SPOT -19,433 -100.0%
SHOP -18,754 -33.7%
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.
Filter:
Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type