SEC 13F Intelligence

Managers / Q4 2025 · view latest →

Atom Investors LP

CIK 0001738902 · 3711 S MOPAC EXPY, BUILDING ONE, SUITE 100, AUSTIN, TX, 78746 · 7372490292

Reported Value
$1.3B
Q4 2025
Positions
556
Filings on Record
30
2019–present window
Filed
Feb 17, 2026
original filing

Summary

Atom Investors LP reported $1.3B in U.S.-listed holdings across 556 positions for Q4 2025.

Its largest position, Vanguard Index Fds, represents 3.3% of the portfolio.

Compared with Q3 2025, the fund opened 275 new positions and exited 303.

Portfolio Metrics

Turnover
+62.0%
vs prior filed quarter
Top-10 Concentration
+13.0%
share of reported value
Largest Position
+3.3%
Vanguard Index Fds
New / Exited
275 / 303
positions this quarter

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $1.0BQ4 ’18Q1 ’19: $1.2BQ2 ’19: $1.5BQ3 ’19: $1.5BQ4 ’19: $1.2BQ4 ’19Q1 ’20: $1.1BQ2 ’20: $1.5BQ3 ’20: $1.0BQ4 ’20: $990MQ4 ’20Q1 ’21: $598MQ2 ’21: $795MQ3 ’21: $1.2BQ4 ’21: $596MQ4 ’21Q1 ’22: $214MQ2 ’22: $229MQ3 ’22: $284MQ4 ’22: $200MQ4 ’22Q1 ’23: $184MQ2 ’23: $263MQ3 ’23: $439MQ4 ’23: $566MQ4 ’23Q1 ’24: $802MQ2 ’24: $1.0BQ3 ’24: $955MQ4 ’24: $805MQ4 ’24Q1 ’25: $813MQ2 ’25: $1.1BQ3 ’25: $1.3BQ4 ’25: $1.3BQ4 ’25Q1 ’26: $1.4Bfilingsflow.com

Portfolio Composition

By security type
Common Stock: 81.5%Other: 8.6%ETP: 8.1%REIT: 1.7%ADR: 0.1%
  • Common Stock · 81.5% · $1.0B
  • Other · 8.6% · $108M
  • ETP · 8.1% · $102M
  • REIT · 1.7% · $22M
  • ADR · 0.1% · $909,292

Quarter-over-Quarter Changes full breakdown →

vs Q3 2025 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
VANGUARD INDEX FDSNEW+67.0K67.0K+$42M$42M
TECHBIO-TECHNE CORPNEW+351.7K351.7K+$21M$21M
CWSTCASELLA WASTE SYS INCNEW+122.7K122.7K+$12M$12M
ATROASTRONICS CORPNEW+188.5K188.5K+$10M$10M
FFIVF5 INCNEW+40.0K40.0K+$10M$10M
SELECT SECTOR SPDR TRNEW+252.3K252.3K+$10M$10M
LBRTLIBERTY ENERGY INCNEW+513.7K513.7K+$9M$9M
COHUCOHU INCNEW+400.4K400.4K+$9M$9M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q4 2025

47 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1XLUSELECT SECTOR SPDR TRSTATE STREET UTI · STATE STREET CON · STATE STREET HEA · STATE STREET REA3.48%$44M734.8K
2VANGUARD INDEX FDSS&P 500 ETF SHS3.34%$42M67.0K
3TECHBIO-TECHNE CORPhistory →COM1.64%$21M351.7K
4SITESITEONE LANDSCAPE SUPPLYhistory →COM1.24%$16M125.8K
5APOAPOLLO GLOBAL MGMT INChistory →COM1.17%$15M101.9K
6CRMSALESFORCE INChistory →COM1.11%$14M52.9K
7CWSTCASELLA WASTE SYS INChistory →CL A0.95%$12M122.7K
8ISHARES TRMSCI USA MIN VOL0.89%$11M118.4K
9GOLAR LNG LTDSHS0.83%$11M282.3K
10ATROASTRONICS CORPhistory →COM0.81%$10M188.5K
11FFIVF5 INChistory →COM0.81%$10M40.0K
12SHWSHERWIN WILLIAMS COCOM0.78%$10M30.4K
13RHLDRESOLUTE HLDGS MGMT INCCOM0.77%$10M47.3K
14LBRTLIBERTY ENERGY INCCOM CL A0.75%$9M513.7K
15PHINPHINIA INCCOMMON STOCK0.74%$9M149.1K
16CSXCSX CORPCOM0.74%$9M257.8K
17COHUCOHU INCCOM0.74%$9M400.4K
18BCBRUNSWICK CORPCOM0.69%$9M117.7K
19AEISADVANCED ENERGY INDSCOM0.69%$9M41.4K
20MCKMCKESSON CORPCOM0.68%$9M10.5K
21CELCCELCUITY INCCOM0.68%$9M85.6K
22GLOBANT S ACOM0.67%$8M129.5K
23AAALCOA CORPCOM0.66%$8M155.3K
24TRLDAVITA INCCOM0.65%$8M71.8K
25EHCENCOMPASS HEALTH CORPCOM0.64%$8M76.5K
264DHDANA INCCOM0.64%$8M341.5K
27HURNHURON CONSULTING GROUP INCCOM0.63%$8M45.6K
28DNTHDIANTHUS THERAPEUTICS INCCOM0.60%$7M181.9K
29HRBBLOCK H & R INCCOM0.59%$7M171.5K
30ABGCENCORA INCCOM0.59%$7M21.9K
31PATKPATRICK INDS INCCOM0.58%$7M67.1K
32CLHCLEAN HARBORS INCCOM0.58%$7M31.0K
33NORWEGIAN CRUISE LINE HLDGSHS0.58%$7M324.6K
34WMWASTE MGMT INC DELCOM0.56%$7M32.0K
35OWLBLUE OWL CAPITAL INCCOM CL A0.53%$7M447.3K
36SMGSCOTTS MIRACLE-GRO COCL A0.53%$7M114.0K
37APTIV PLCCOM SHS0.52%$7M86.3K
38CSLCARLISLE COS INCCOM0.52%$7M20.5K
39GPGICOMPOSECURE INCCOM CL A0.51%$6M334.7K
40STERIS PLCSHS USD0.51%$6M25.4K
41MTHMERITAGE HOMES CORPCOM0.50%$6M95.1K
42SAIASAIA INCCOM0.49%$6M19.0K
43DORMDORMAN PRODS INCCOM0.49%$6M50.2K
44FLUTTER ENTMT PLCSHS0.49%$6M28.5K
45LKQ1LKQ CORPCOM0.48%$6M201.0K
46AWNADVANCE AUTO PARTS INCCOM0.47%$6M150.1K
47NVDANVIDIA CORPORATIONCOM0.47%$6M31.4K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$1.4B641May 15, 202613F-HRchanges · EDGAR ↗
Q4 2025$1.3B556Feb 17, 202613F-HRchanges · EDGAR ↗
Q3 2025$1.3B584Nov 14, 202513F-HRchanges · EDGAR ↗
Q2 2025$1.1B587Aug 14, 202513F-HRchanges · EDGAR ↗
Q1 2025$813M488May 15, 202513F-HRchanges · EDGAR ↗
Q4 2024$805M481Feb 14, 202513F-HRchanges · EDGAR ↗
Q3 2024$955M456Nov 14, 202413F-HRchanges · EDGAR ↗
Q2 2024$1.0B457Aug 14, 202413F-HRchanges · EDGAR ↗
Q1 2024$802M564May 15, 202413F-HRchanges · EDGAR ↗
Q4 2023$566M439Feb 14, 202413F-HRchanges · EDGAR ↗
Q3 2023$439M421Nov 14, 202313F-HRchanges · EDGAR ↗
Q2 2023$263M282Aug 14, 202313F-HRchanges · EDGAR ↗
Q1 2023$184M247May 15, 202313F-HRchanges · EDGAR ↗
Q4 2022$200M217Feb 14, 202313F-HRchanges · EDGAR ↗
Q3 2022$284M274Nov 8, 202213F-HRchanges · EDGAR ↗
Q2 2022$229M246Aug 15, 202213F-HRchanges · EDGAR ↗
Q1 2022$214M186May 16, 202213F-HRchanges · EDGAR ↗
Q4 2021$596M263Feb 14, 202213F-HRchanges · EDGAR ↗
Q3 2021$1.2B302Nov 15, 202113F-HRchanges · EDGAR ↗
Q2 2021$795M238Aug 16, 202113F-HRchanges · EDGAR ↗
Q1 2021$598M237May 17, 202113F-HRchanges · EDGAR ↗
Q4 2020$990M360Feb 16, 202113F-HRchanges · EDGAR ↗
Q3 2020$1.0B495Nov 13, 202013F-HRchanges · EDGAR ↗
Q2 2020$1.5B388Aug 14, 202013F-HRchanges · EDGAR ↗
Q1 2020$1.1B312May 15, 202013F-HRchanges · EDGAR ↗
Q4 2019$1.2B234Feb 13, 202013F-HRchanges · EDGAR ↗
Q3 2019$1.5B274Nov 14, 201913F-HRchanges · EDGAR ↗
Q2 2019$1.5B393Aug 14, 201913F-HRchanges · EDGAR ↗
Q1 2019$1.2B494May 15, 201913F-HRchanges · EDGAR ↗
Q4 2018$1.0B514Feb 14, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.