Atom Investors LP
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Atom Investors LP reported 556 stock positions worth $1.3 billion. Its top holding was Vanguard S&P 500 ETF (VOO) at 3.3% of the portfolio, followed by Bio-Techne (TECH, 1.6%) and Siteone Landscape Supply (SITE, 1.2%). Compared with Q3 2025, it opened 274 new positions, sold out of 302, added to 136 and reduced 131. The biggest buy was a new position in Vanguard S&P 500 ETF (VOO) and the biggest sale an exit from iShares Russell 2000 ETF (IWM).
- Most Recent 13F
- Q2 2026
- Location
- AUSTIN, TX
- CIK
- 0001738902
- Portfolio Value
- $1.3B (Q4 2025)
- SEC Filing
- 0001214659-26-001839 ↗ filed Feb 17, 2026
Holdings Value
Holdings 556 stocks · $1.3B
| VOO Vanguard S&P 500 ETF | 3.34% | 67,041 | $42.0M | New |
| TECH Bio-Techne Corp. | 1.64% | 351,673 | $20.7M | New |
| SITE Siteone Landscape Supply Inc. | 1.24% | 125,789 | $15.7M | Add +1732.3% |
| APO Apollo Global Management Inc. | 1.17% | 101,853 | $14.7M | Add +267.4% |
| CRM Salesforce Inc. | 1.11% | 52,870 | $14.0M | Add +75.0% |
| CWST Casella Waste Systems Inc. Class A | 0.95% | 122,675 | $12.0M | New |
| XLU St Sr Utl SL SE SPDR ETF-Usd | 0.90% | 266,557 | $11.4M | Add +263.4% |
| XLP SS Consumer Staples Sel Sect | 0.89% | 143,951 | $11.2M | Add +153.7% |
| USMV iShares MSCI USA Min Vol Fac | 0.89% | 118,443 | $11.2M | Add +10.1% |
| XLV SS Health Care Select Sector | 0.88% | 71,941 | $11.1M | Reduce -32.1% |
| GLNG Golar LNG Ltd. | 0.83% | 282,305 | $10.5M | Add +116.5% |
| ATRO Astronics Corp. | 0.81% | 188,492 | $10.2M | New |
| FFIV F5 Inc. | 0.81% | 40,011 | $10.2M | New |
| XLRE SS Real Estate Select Sector | 0.81% | 252,322 | $10.2M | New |
| SHW The Sherwin-Williams Co. | 0.78% | 30,401 | $9.9M | Add +32.8% |
| RHLD Resolute Holdings Manag | 0.77% | 47,250 | $9.8M | Add +257.4% |
| LBRT Liberty Energy Inc. | 0.75% | 513,742 | $9.5M | New |
| PHIN Phinia Inc. | 0.74% | 149,138 | $9.3M | Add +53.4% |
| CSX CSX Corp. | 0.74% | 257,834 | $9.3M | Add +138.3% |
| COHU Cohu Inc. | 0.74% | 400,439 | $9.3M | New |
| BC Brunswick Corp. | 0.69% | 117,703 | $8.7M | Reduce -13.1% |
| AEIS Advanced Energy Industries | 0.69% | 41,372 | $8.7M | New |
| MCK McKesson Corp. | 0.68% | 10,505 | $8.6M | Add +282.1% |
| CELC Celcuity Inc. | 0.68% | 85,583 | $8.5M | New |
| GLOB Globant SA | 0.67% | 129,534 | $8.5M | Add +2254.7% |
| AA Alcoa Corp. | 0.66% | 155,253 | $8.3M | Reduce -12.4% |
| DVA Davita Inc. | 0.65% | 71,796 | $8.2M | Add +56.1% |
| EHC Encompass Health Corp. | 0.64% | 76,487 | $8.1M | Add +110.1% |
| DAN Dana Inc. | 0.64% | 341,506 | $8.1M | New |
| HURN Huron Consulting Group Inc. | 0.63% | 45,619 | $7.9M | Reduce -18.7% |
| DNTH Dianthus Therapeutics Inc. | 0.60% | 181,860 | $7.5M | Add +197.9% |
| HRB H&R Block Inc. filed as BLOCK H & R INC | 0.59% | 171,538 | $7.5M | New |
| COR Cencora Inc. | 0.59% | 21,942 | $7.4M | Add +41.6% |
| PATK Patrick Industries Inc. | 0.58% | 67,065 | $7.3M | New |
| CLH Clean Harbors Inc. | 0.58% | 31,001 | $7.3M | New |
| NCLH Norwegian Cruise Line Holdin | 0.58% | 324,590 | $7.2M | New |
| WM Waste Management Inc. | 0.56% | 31,975 | $7.0M | Add +9.0% |
| OWL Blue Owl Capital Inc. | 0.53% | 447,272 | $6.7M | New |
| SMG Scotts Miracle-Gro Co. | 0.53% | 113,989 | $6.7M | New |
| APTV Aptiv PLC | 0.52% | 86,251 | $6.6M | New |
| CSL Carlisle Cos Inc. | 0.52% | 20,483 | $6.6M | Reduce -38.0% |
| GPGI Gpgi Inc. filed as COMPOSECURE INC | 0.51% | 334,666 | $6.5M | Reduce -10.4% |
| STE Steris PLC | 0.51% | 25,427 | $6.4M | Add +63.1% |
| MTH Meritage Homes Corp. | 0.50% | 95,073 | $6.3M | New |
| SAIA Saia Inc. | 0.49% | 19,048 | $6.2M | Add +1014.6% |
| DORM Dorman Products Inc. | 0.49% | 50,191 | $6.2M | Add +293.4% |
| FLUT Flutter Entertainment PLC-Di | 0.49% | 28,495 | $6.1M | New |
| LKQ LKQ Corp. | 0.48% | 200,963 | $6.1M | Add +4.2% |
| AAP Advance Auto Parts Inc. | 0.47% | 150,108 | $5.9M | Add +98.7% |
| NVDA Nvidia Corp. | 0.47% | 31,433 | $5.9M | Add +51.4% |
| BLBD Blue Bird Corp. | 0.46% | 123,801 | $5.8M | New |
| KOD Kodiak Sciences Inc. | 0.46% | 207,495 | $5.8M | New |
| ENSG The Ensign Group Inc. | 0.46% | 32,943 | $5.7M | Add +50.5% |
| PFGC Performance Food Group Co. | 0.44% | 61,856 | $5.6M | Add +18.9% |
| GWW WW Grainger Inc. | 0.44% | 5,505 | $5.6M | New |
| LNT Alliant Energy Corp. | 0.44% | 84,997 | $5.5M | New |
| URGN Urogen Pharma Ltd. | 0.44% | 234,423 | $5.5M | Reduce -19.7% |
| FND Floor & Decor Holdings Inc. Class A | 0.43% | 88,938 | $5.4M | Add +252.1% |
| UTI Universal Technical Institut | 0.43% | 207,027 | $5.4M | New |
| BLDR Builders Firstsource Inc. | 0.42% | 51,161 | $5.3M | Add +26.3% |
| MBUU Malibu Boats Inc. Class A | 0.42% | 186,051 | $5.2M | Add +11.0% |
| AI C3.AI Inc. Class A | 0.40% | 374,371 | $5.0M | Add +498.4% |
| EFOR Everforth Inc. filed as ASGN INC | 0.40% | 104,762 | $5.0M | New |
| THR Thermon Group Holdings Inc. | 0.40% | 134,849 | $5.0M | Add +187.9% |
| STZ Constellation Brands Inc. Class A | 0.39% | 36,040 | $5.0M | Add +85.9% |
| ESI Element Solutions Inc. | 0.39% | 196,251 | $4.9M | Reduce -17.9% |
| WHD Cactus Inc. Class A | 0.39% | 106,891 | $4.9M | New |
| ENTG Entegris Inc. | 0.39% | 57,914 | $4.9M | New |
| DBRG Digitalbridge Group Inc. | 0.39% | 317,345 | $4.9M | New |
| PRAX Praxis Precision Medicines I | 0.39% | 16,487 | $4.9M | New |
| BAX Baxter International Inc. | 0.39% | 253,943 | $4.9M | New |
| JHX James Hardie Ind PLC | 0.38% | 233,159 | $4.8M | New |
| DIS The Walt Disney Co. filed as DISNEY WALT CO | 0.38% | 42,322 | $4.8M | Add +1737.7% |
| WH Wyndham Hotels & Resorts Inc. | 0.38% | 63,595 | $4.8M | Add +153.8% |
| GOOG Alphabet Inc. Class C | 0.38% | 15,183 | $4.8M | Reduce -0.1% |
| REZI Resideo Technologies Inc. | 0.38% | 135,557 | $4.8M | Add +427.2% |
| GTLS Chart Industries Inc. | 0.38% | 23,019 | $4.7M | New |
| FICO Fair Isaac Corp. | 0.38% | 2,801 | $4.7M | Reduce -10.1% |
| MSFT Microsoft Corp. | 0.37% | 9,747 | $4.7M | Add +3.3% |
| PCG P G & E Corp. | 0.37% | 291,917 | $4.7M | Reduce -31.1% |
| BCO The Brink's Co. | 0.37% | 39,816 | $4.6M | New |
| MU Micron Technology Inc. | 0.37% | 16,213 | $4.6M | New |
| ETR Entergy Corp. | 0.37% | 49,806 | $4.6M | Reduce -54.8% |
| DHR Danaher Corp. | 0.36% | 19,861 | $4.5M | Reduce -18.5% |
| DNOW Dnow Inc. | 0.36% | 339,210 | $4.5M | New |
| ONTO Onto Innovation Inc. | 0.36% | 28,349 | $4.5M | Reduce -19.5% |
| UAL United Airlines Holdings Inc. | 0.35% | 39,949 | $4.5M | New |
| MNRO Monro Inc. | 0.35% | 222,586 | $4.5M | Add +66.7% |
| KALV Kalvista Pharmaceuticals Inc. | 0.35% | 276,113 | $4.5M | New |
| XEL Xcel Energy Inc. | 0.35% | 59,796 | $4.4M | New |
| LOPE Grand Canyon Education Inc. | 0.35% | 26,451 | $4.4M | Add +182.9% |
| SSB Southstate Bank Corp. | 0.35% | 46,199 | $4.3M | Reduce -0.9% |
| AAPL Apple Inc. | 0.34% | 15,892 | $4.3M | Reduce -2.0% |
| NU Nu Holdings Ltd./Cayman Isl-A filed as NU HLDGS LTD | 0.34% | 257,023 | $4.3M | New |
| CI The Cigna Group | 0.34% | 15,443 | $4.3M | Reduce -55.8% |
| DGX Quest Diagnostics Inc. | 0.33% | 24,043 | $4.2M | New |
| BLD Topbuild Corp. | 0.33% | 9,990 | $4.2M | Reduce -33.7% |
| PFE Pfizer Inc. | 0.33% | 167,271 | $4.2M | Add +242.7% |
| GUTS Fractyl Health Inc. | 0.33% | 1,883,018 | $4.1M | New |
| UNH Unitedhealth Group Inc. | 0.33% | 12,528 | $4.1M | New |
Portfolio Sells Q3 2025 → Q4 2025
| IWM iShares Russell 2000 ETF | Sold out | 0.00% | −7.42 |
| SPY SS SPDR S&P 500 ETF Trust-US | Reduce -98.5% | 0.08% | −5.02 |
| IWN iShares Russell 2000 Value E | Reduce -97.6% | 0.08% | −3.00 |
| XRT SS SPDR S&P Retail ETF | Reduce -97.7% | 0.04% | −1.52 |
| XLF SS Financial Select Sector | Reduce -97.9% | 0.03% | −1.34 |
| QQQ Invesco QQQ Trust Series 1 | Sold out | 0.00% | −1.20 |
| XHB SS SPDR S&P Homebldrs ETF | Reduce -97.3% | 0.03% | −1.16 |
| XBI SS SPDR S&P Biotech ETF | Reduce -98.2% | 0.02% | −0.91 |
| OLLI Ollie's Bargain Outlet Holdi | Sold out | 0.00% | −0.79 |
| XLI SS Industrial Select Sector | Reduce -97.0% | 0.03% | −0.77 |
| MIDD Middleby Corp. | Sold out | 0.00% | −0.74 |
| AZZ Azz Inc. | Sold out | 0.00% | −0.70 |
| LUV Southwest Airlines Co. | Sold out | 0.00% | −0.67 |
| HUBB Hubbell Inc. | Sold out | 0.00% | −0.66 |
| LRN Stride Inc. | Sold out | 0.00% | −0.64 |
| META Meta Platforms Inc. Class A | Sold out | 0.00% | −0.64 |
| IGV iShares Expanded Tech-Softwa | Sold out | 0.00% | −0.58 |
| VNOM Viper Energy Inc. Class A | Reduce -75.3% | 0.20% | −0.57 |
| HTGC Hercules Capital Inc. | Sold out | 0.00% | −0.55 |
| OIH Vaneck Oil Services ETF | Reduce -97.4% | 0.02% | −0.52 |
| FUN Six Flags Entertainment Corp. | Sold out | 0.00% | −0.51 |
| BRO Brown & Brown Inc. | Sold out | 0.00% | −0.50 |
| TYL Tyler Technologies Inc. | Sold out | 0.00% | −0.50 |
| XLE SS Energy Select Sector | Reduce -96.7% | 0.02% | −0.50 |
| MTUM iShares MSCI USA Momentum Fa | Sold out | 0.00% | −0.50 |
| PGR Progressive Corp. | Reduce -94.2% | 0.03% | −0.50 |
| PFSI Pennymac Financial Services | Sold out | 0.00% | −0.49 |
| XLK SS Technology Select Sector | Sold out | 0.00% | −0.47 |
| BILL Bill Holdings Inc. | Sold out | 0.00% | −0.47 |
| SMH Vaneck Semiconductor ETF | Reduce -96.6% | 0.02% | −0.46 |
| GPC Genuine Parts Co. | Reduce -95.8% | 0.02% | −0.44 |
| PRGO Perrigo Co. PLC | Reduce -64.9% | 0.13% | −0.44 |
| AMBA Ambarella Inc. | Sold out | 0.00% | −0.43 |
| HLI Houlihan Lokey Inc. | Sold out | 0.00% | −0.43 |
| CI The Cigna Group | Reduce -55.8% | 0.34% | −0.43 |
| XOP SS SPDR S&P Og Exp & Prod | Sold out | 0.00% | −0.42 |
| DLTR Dollar Tree Inc. | Sold out | 0.00% | −0.42 |
| ETR Entergy Corp. | Reduce -54.8% | 0.37% | −0.41 |
| MOH Molina Healthcare Inc. | Sold out | 0.00% | −0.41 |
| VECO Veeco Instruments Inc. | Reduce -72.2% | 0.15% | −0.40 |
| VEA Vanguard Ftse Developed ETF | Reduce -96.4% | 0.02% | −0.39 |
| AAON Aaon Inc. | Reduce -71.3% | 0.13% | −0.39 |
| SYY Sysco Corp. | Reduce -54.9% | 0.28% | −0.38 |
| XLB SS Materials Select Sector | Sold out | 0.00% | −0.37 |
| IBB iShares Biotechnology ETF | Sold out | 0.00% | −0.37 |
| CNK Cinemark Holdings Inc. | Reduce -51.2% | 0.27% | −0.36 |
| RSP Invesco S&P 500 Equal Weight | Sold out | 0.00% | −0.35 |
| BMY Bristol-Myers Squibb Co. | Sold out | 0.00% | −0.35 |
| NOW ServiceNow Inc. | Reduce -57.8% | 0.19% | −0.33 |
| CMCSA Comcast Corp. Class A | Reduce -93.3% | 0.02% | −0.32 |
Portfolio Buys Q3 2025 → Q4 2025
| VOO Vanguard S&P 500 ETF | New | 3.34% | +3.34 |
| TECH Bio-Techne Corp. | New | 1.64% | +1.64 |
| SITE Siteone Landscape Supply Inc. | Add +1732.3% | 1.24% | +1.18 |
| CWST Casella Waste Systems Inc. Class A | New | 0.95% | +0.95 |
| APO Apollo Global Management Inc. | Add +267.4% | 1.17% | +0.89 |
| ATRO Astronics Corp. | New | 0.81% | +0.81 |
| FFIV F5 Inc. | New | 0.81% | +0.81 |
| XLRE SS Real Estate Select Sector | New | 0.81% | +0.81 |
| LBRT Liberty Energy Inc. | New | 0.75% | +0.75 |
| COHU Cohu Inc. | New | 0.74% | +0.74 |
| RHLD Resolute Holdings Manag | Add +257.4% | 0.77% | +0.70 |
| AEIS Advanced Energy Industries | New | 0.69% | +0.69 |
| CELC Celcuity Inc. | New | 0.68% | +0.68 |
| XLU St Sr Utl SL SE SPDR ETF-Usd | Add +263.4% | 0.90% | +0.66 |
| GLOB Globant SA | Add +2254.7% | 0.67% | +0.65 |
| DAN Dana Inc. | New | 0.64% | +0.64 |
| HRB H&R Block Inc. | New | 0.59% | +0.59 |
| PATK Patrick Industries Inc. | New | 0.58% | +0.58 |
| CLH Clean Harbors Inc. | New | 0.58% | +0.58 |
| NCLH Norwegian Cruise Line Holdin | New | 0.58% | +0.58 |
| CRM Salesforce Inc. | Add +75.0% | 1.11% | +0.57 |
| XLP SS Consumer Staples Sel Sect | Add +153.7% | 0.89% | +0.55 |
| OWL Blue Owl Capital Inc. | New | 0.53% | +0.53 |
| SMG Scotts Miracle-Gro Co. | New | 0.53% | +0.53 |
| MCK McKesson Corp. | Add +282.1% | 0.68% | +0.52 |
| APTV Aptiv PLC | New | 0.52% | +0.52 |
| MTH Meritage Homes Corp. | New | 0.50% | +0.50 |
| FLUT Flutter Entertainment PLC-Di | New | 0.49% | +0.49 |
| BLBD Blue Bird Corp. | New | 0.46% | +0.46 |
| KOD Kodiak Sciences Inc. | New | 0.46% | +0.46 |
| SAIA Saia Inc. | Add +1014.6% | 0.49% | +0.46 |
| CSX CSX Corp. | Add +138.3% | 0.74% | +0.45 |
| GWW WW Grainger Inc. | New | 0.44% | +0.44 |
| LNT Alliant Energy Corp. | New | 0.44% | +0.44 |
| GLNG Golar LNG Ltd. | Add +116.5% | 0.83% | +0.43 |
| UTI Universal Technical Institut | New | 0.43% | +0.43 |
| DNTH Dianthus Therapeutics Inc. | Add +197.9% | 0.60% | +0.41 |
| EFOR Everforth Inc. | New | 0.40% | +0.40 |
| WHD Cactus Inc. Class A | New | 0.39% | +0.39 |
| ENTG Entegris Inc. | New | 0.39% | +0.39 |
| DBRG Digitalbridge Group Inc. | New | 0.39% | +0.39 |
| PRAX Praxis Precision Medicines I | New | 0.39% | +0.39 |
| BAX Baxter International Inc. | New | 0.39% | +0.39 |
| JHX James Hardie Ind PLC | New | 0.38% | +0.38 |
| GTLS Chart Industries Inc. | New | 0.38% | +0.38 |
| BCO The Brink's Co. | New | 0.37% | +0.37 |
| MU Micron Technology Inc. | New | 0.37% | +0.37 |
| DIS The Walt Disney Co. | Add +1737.7% | 0.38% | +0.36 |
| DNOW Dnow Inc. | New | 0.36% | +0.36 |
| UAL United Airlines Holdings Inc. | New | 0.35% | +0.35 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 818 | $1.1B | VOO, VTRS, INTC, HPE, RYTM |
| Q1 2026 | 641 | $1.4B | VOO, TECH, EQIX, AVGO, SMG |
| Q4 2025 | 556 | $1.3B | VOO, TECH, SITE, APO, CRM |
| Q3 2025 | 584 | $1.3B | IWM, SPY, IWN, XRT, XLF |
| Q2 2025 | 587 | $1.1B | IWM, IWN, XLF, XHB, XRT |
| Q1 2025 | 488 | $812.9M | IWN, XLF, AWK, IEX, BC |
| Q4 2024 | 481 | $805.0M | IWM, IWN, AWK, IEX, COF |
| Q3 2024 | 456 | $955.2M | IWN, MSFT, AXTA, UNH, V |
| Q2 2024 | 457 | $1.0B | IWN, BAC, TSM, AMT, V |
| Q1 2024 | 563 | $795.8M | IWM, SPY, HON, TSM, XBI |