Atom Investors LP

Q4 2025 13F-HR Holdings

Location
Austin, TX
Holdings as of
12/31/2025
Date filed
2/17/2026
Form type
13F-HR
Num holdings
556
Total value ($000)
$1,259,348
Net value change ($000)
-59,690 (-4.5%)
New positions
275
Sold out positions
303
Turnover %
84.4%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/14/2025 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)
VOO 42,043 NEW
TECH 20,682 NEW
SITE 14,784 1672.4%
CWST 12,015 NEW
APO 11,050 299.1%
ATRO 10,224 NEW
FFIV 10,213 NEW
XLRE 10,181 NEW
LBRT 9,484 NEW
COHU 9,318 NEW
Top Reduces (Value $000, Stocks/ETFs)
IWM -97,887 -100.0%
SPY -66,292 -98.5%
IWN -39,565 -97.6%
XRT -20,032 -97.8%
XLF -17,674 -97.9%
QQQ -15,798 -100.0%
XHB -15,337 -97.5%
XBI -11,965 -97.8%
OLLI -10,355 -100.0%
XLI -10,126 -97.0%
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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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type