Atom Investors LP

In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Atom Investors LP reported 563 stock positions worth $795.8 million. Its top holding was iShares Russell 2000 ETF (IWM) at 1.8% of the portfolio, followed by SS SPDR S&P 500 ETF Trust-US (SPY, 1.8%) and Honeywell International (HON, 1.3%). Compared with Q4 2023, it opened 255 new positions, sold out of 131, added to 183 and reduced 117. The biggest buy was a new position in Regency Centers (REG) and the biggest sale Ecolab (ECL, shares −85%).

Most Recent 13F
Q2 2026
Location
AUSTIN, TX
CIK
0001738902
Portfolio Value
$795.8M (Q1 2024)
SEC Filing
0001214659-24-009126 ↗ filed May 15, 2024

Holdings Value

0$500.0M$1.0B$1.5B Q1 2024: $795.8M $795.8M Q1 2024 Q2 2024: $1.0B Q2 2024 Q3 2024: $955.2M Q3 2024 Q4 2024: $805.0M Q4 2024 Q1 2025: $812.9M Q1 2025 Q2 2025: $1.1B Q2 2025 Q3 2025: $1.3B Q3 2025 Q4 2025: $1.3B Q4 2025 Q1 2026: $1.4B Q1 2026 Q2 2026: $1.1B Q2 2026

Holdings 563 stocks · $795.8M
IWM iShares Russell 2000 ETF 1.81% 68,366 $14.4M Add +5.4%
SPY SS SPDR S&P 500 ETF Trust-US 1.76% 26,835 $14.0M Add +57.4%
HON Honeywell International Inc. 1.30% 50,462 $10.4M Add +33.8%
TSM Taiwan Semiconductor-SP ADR 1.11% 65,045 $8.8M Add +158.7%
XBI SS SPDR S&P Biotech ETF 1.08% 90,891 $8.6M Add +243.9%
REG Regency Centers Corp. 1.05% 138,608 $8.4M New
V Visa Inc. Class A 1.02% 28,997 $8.1M Add +10.3%
AWK American Water Works Co. Inc. 1.00% 65,224 $8.0M Add +32.1%
ABT Abbott Laboratories 0.98% 68,316 $7.8M Add +57.1%
MSFT Microsoft Corp. 0.94% 17,810 $7.5M Add +29.8%
VRT Vertiv Holdings Co. Class A 0.91% 88,275 $7.2M Add +20.3%
PSA Public Storage 0.83% 22,906 $6.6M New
IVV iShares Core S&P 500 ETF 0.83% 12,630 $6.6M No change
ABM Abm Industries Inc. 0.81% 144,078 $6.4M New
TMUS T-Mobile US Inc. 0.78% 37,957 $6.2M Reduce -4.2%
CRM Salesforce Inc. 0.77% 20,425 $6.2M Add +101.5%
MDT Medtronic PLC 0.75% 68,763 $6.0M Add +125.3%
SBAC SBA Communications Corp. 0.74% 27,152 $5.9M Add +109.8%
NVS Novartis AG-Sponsored ADR 0.74% 60,515 $5.9M New
HOG Harley-Davidson Inc. 0.73% 133,441 $5.8M New
BAC Bank of America Corp. filed as BANK AMERICA CORP 0.73% 153,183 $5.8M Add +101.5%
TJX TJX Companies Inc. filed as TJX COS INC NEW 0.72% 56,787 $5.8M Add +97.7%
LIN Linde PLC 0.71% 12,233 $5.7M Add +95.0%
KO The Coca-Cola Co. 0.71% 92,525 $5.7M Add +342.0%
LNT Alliant Energy Corp. 0.71% 111,408 $5.6M Add +82.5%
SHW The Sherwin-Williams Co. 0.70% 15,928 $5.5M Add +87.8%
AWR American States Water Co. filed as AMER STATES WTR CO 0.68% 74,395 $5.4M Add +417.4%
AMZN Amazon.com Inc. 0.65% 28,857 $5.2M Add +19.5%
EZU iShares MSCI Eurozone ETF 0.65% 101,410 $5.2M Add +21.3%
VGK Vanguard Ftse Europe ETF 0.64% 76,001 $5.1M Reduce -10.3%
FTV Fortive Corp. 0.64% 59,318 $5.1M Add +9.6%
YUM Yum! Brands Inc. 0.64% 36,456 $5.1M Add +21.5%
ACM Aecom 0.63% 51,442 $5.0M New
MTZ Mastec Inc. 0.63% 54,008 $5.0M Add +37.0%
GSK GSK PLC-Spon ADR 0.63% 116,706 $5.0M Add +1006.6%
ELV Elevance Health Inc. 0.62% 9,441 $4.9M Add +1.7%
XHB SS SPDR S&P Homebldrs ETF 0.61% 43,623 $4.9M Add +6.3%
NOV Nov Inc. 0.60% 244,608 $4.8M Add +124.0%
NVDA Nvidia Corp. 0.60% 5,273 $4.8M Add +2.1%
AZN Astrazeneca PLC-Spons ADR 0.59% 69,276 $4.7M New
CZR Caesars Entertainment Inc. 0.59% 106,546 $4.7M Add +21.6%
WTRG Essential Utilities Inc. 0.58% 125,077 $4.6M Reduce -16.3%
INVH Invitation Homes Inc. 0.58% 128,679 $4.6M New
AAPL Apple Inc. 0.58% 26,698 $4.6M Add +9.9%
AYI Acuity Inc. 0.56% 16,613 $4.5M Add +975.3%
CVSA Covista Inc. filed as ADTALEM GLOBAL ED INC 0.56% 86,605 $4.5M Add +73.5%
BNY Bank of New York Mellon Corp. filed as BANK NEW YORK MELLON CORP 0.54% 74,481 $4.3M Add +45.4%
KRE SS SPDR S&P Regional Bank 0.53% 84,668 $4.3M Add +48.0%
EHC Encompass Health Corp. 0.53% 51,392 $4.2M Add +87.3%
BP BP PLC-Spons ADR 0.52% 109,309 $4.1M Add +454.7%
AXTA Axalta Coating Systems Ltd. 0.52% 119,262 $4.1M Add +202.3%
LZ Legalzoomcom Inc. 0.51% 304,799 $4.1M Add +11.6%
VMC Vulcan Materials Co. 0.51% 14,820 $4.0M Reduce -45.3%
IEX Idex Corp. 0.50% 16,451 $4.0M New
ALL Allstate Corp. 0.50% 23,146 $4.0M Add +40.7%
TW Tradeweb Markets Inc. Class A 0.49% 37,782 $3.9M Add +141.0%
OLN Olin Corp. 0.47% 63,637 $3.7M Add +56.3%
DESP Despegar.com Corp. 0.46% 307,237 $3.7M Add +38.5%
AVB Avalonbay Communities Inc. 0.45% 19,434 $3.6M Add +199.6%
CSX CSX Corp. 0.45% 96,872 $3.6M New
MTUS Metallus Inc. 0.45% 161,156 $3.6M Add +38.5%
PH Parker Hannifin Corp. 0.45% 6,421 $3.6M Reduce -26.9%
VICI Vici Properties Inc. filed as VICI PPTYS INC 0.44% 117,902 $3.5M Reduce -3.0%
SMTC Semtech Corp. 0.44% 126,786 $3.5M Add +894.2%
XLF SS Financial Select Sector 0.42% 80,174 $3.4M Add +57.1%
BDX Becton Dickinson and Co. 0.42% 13,436 $3.3M New
CWH Camping World Holdings Inc. Class A 0.41% 118,085 $3.3M Add +63.2%
ROST Ross Stores Inc. 0.41% 22,141 $3.2M Add +16.3%
ASML ASML Holding NV-NY Reg SHS 0.41% 3,347 $3.2M New
GIL Gildan Activewear Inc. 0.41% 87,028 $3.2M New
IBKR Interactive Brokers Gro Class A 0.41% 28,902 $3.2M New
MRUS Merus NV 0.40% 70,571 $3.2M Add +98.5%
XLE SS Energy Select Sector 0.40% 33,343 $3.1M Add +48.2%
MLM Martin Marietta Materials 0.39% 5,070 $3.1M Reduce -17.1%
MORF Morphic Holding Inc. 0.38% 86,630 $3.0M Add +17.5%
XLB SS Materials Select Sector 0.38% 32,764 $3.0M Add +43.6%
AMH American Homes 4 Rent- A 0.38% 82,013 $3.0M New
GOOG Alphabet Inc. Class C 0.37% 19,180 $2.9M Reduce -11.2%
JPM JPMorgan Chase & Co. 0.37% 14,551 $2.9M Add +78.0%
ALGM Allegro Microsystems Inc. 0.37% 108,038 $2.9M Reduce -24.1%
BANC Banc of California Inc. 0.36% 187,088 $2.8M Add +21.9%
IBB iShares Biotechnology ETF 0.36% 20,713 $2.8M Add +27.3%
STT State Street Corp. 0.35% 36,340 $2.8M Add +260.8%
GOOGL Alphabet Inc. Class A 0.34% 17,947 $2.7M Add +29.1%
MUR Murphy Oil Corp. 0.34% 59,008 $2.7M New
SXT Sensient Technologies Corp. 0.33% 37,980 $2.6M Add +3.9%
ZUO Zuora Inc. Class A 0.33% 287,898 $2.6M Add +58.6%
CCCC C4 Therapeutics Inc. 0.32% 316,246 $2.6M New
P Everpure Inc. Class A filed as PURE STORAGE INC 0.32% 49,623 $2.6M Reduce -18.1%
PHIN Phinia Inc. 0.32% 66,928 $2.6M New
MHK Mohawk Industries Inc. 0.32% 19,547 $2.6M Reduce -54.0%
FUL H.B. Fuller Co. filed as FULLER H B CO 0.32% 31,952 $2.5M New
BRK.A Berkshire Hathaway Inc. Class A 0.32% 4 $2.5M Reduce -20.0%
AVGO Broadcom Inc. 0.31% 1,872 $2.5M Add +56.4%
SGI Somnigroup International Inc. filed as TEMPUR SEALY INTL INC 0.31% 43,155 $2.5M Add +246.0%
AMN Amn Healthcare Services Inc. 0.31% 38,917 $2.4M New
BC Brunswick Corp. 0.30% 24,918 $2.4M Add +84.8%
PETQ Petiq Inc. 0.30% 130,560 $2.4M New
GE General Electric 0.30% 13,509 $2.4M New
ACGL Arch Capital Group Ltd. 0.29% 25,315 $2.3M New

Show all 563 holdings

Options reported separately and not counted above: XBI puts ($5.7M).

Portfolio Sells Q4 2023 → Q1 2024
ECL Ecolab Inc. Reduce -84.8% 0.15% −1.01
TEL Te Connectivity Ltd. Reduce -66.7% 0.29% −0.90
WM Waste Management Inc. Reduce -89.1% 0.07% −0.68
FLO Flowers Foods Inc. Sold out 0.00% −0.67
CLS Celestica Inc. Sold out 0.00% −0.64
HDB HDFC Bank Ltd.-ADR Reduce -87.8% 0.05% −0.63
EWBC East West Bancorp Inc. Sold out 0.00% −0.60
CME Cme Group Inc. Sold out 0.00% −0.58
VMC Vulcan Materials Co. Reduce -45.3% 0.51% −0.58
CI The Cigna Group Reduce -76.6% 0.14% −0.55
LRN Stride Inc. Reduce -64.9% 0.20% −0.54
JCI Johnson Controls Internation Sold out 0.00% −0.54
WNS WNS Holdings Ltd.-ADR Sold out 0.00% −0.50
CIEN Ciena Corp. Reduce -91.8% 0.03% −0.49
REXR Rexford Industrial Realty Inc. Reduce -76.7% 0.08% −0.47
MHK Mohawk Industries Inc. Reduce -54.0% 0.32% −0.45
CMP Compass Minerals Internation Sold out 0.00% −0.43
FROG Jfrog Ltd. Sold out 0.00% −0.42
WTRG Essential Utilities Inc. Reduce -16.3% 0.58% −0.40
ALGM Allegro Microsystems Inc. Reduce -24.1% 0.37% −0.39
DD Dupont DE Nemours Inc. Sold out 0.00% −0.38
AMD Advanced Micro Devices Reduce -73.5% 0.11% −0.37
ADSK Autodesk Inc. Reduce -73.4% 0.09% −0.35
IBN Icici Bank Ltd.-Spon ADR Reduce -72.0% 0.10% −0.35
TMUS T-Mobile US Inc. Reduce -4.2% 0.78% −0.34
BERY Berry Global Group Inc. Sold out 0.00% −0.34
CINF Cincinnati Financial Corp. Sold out 0.00% −0.34
SNY Sanofi-ADR Reduce -83.4% 0.04% −0.34
ROVR Rover Group Inc. Sold out 0.00% −0.34
VGK Vanguard Ftse Europe ETF Reduce -10.3% 0.64% −0.32
UNP Union Pacific Corp. Sold out 0.00% −0.32
UHS Universal Health Services-B Sold out 0.00% −0.32
NVT Nvent Electric PLC Reduce -83.6% 0.06% −0.32
CRBG Corebridge Financial Inc. Reduce -49.8% 0.28% −0.31
BLDR Builders Firstsource Inc. Sold out 0.00% −0.31
DVA Davita Inc. Reduce -75.8% 0.09% −0.31
AZEK The Azek Co. Inc. Reduce -81.2% 0.06% −0.30
AMAT Applied Materials Inc. Reduce -58.8% 0.17% −0.29
GM General Motors Co. Reduce -76.6% 0.08% −0.29
ISRG Intuitive Surgical Inc. Sold out 0.00% −0.29
ARMK Aramark Reduce -58.1% 0.15% −0.29
WH Wyndham Hotels & Resorts Inc. Reduce -73.3% 0.06% −0.28
SQSP Squarespace Inc. Class A Reduce -87.0% 0.03% −0.27
VZIO Vizio Holding Corp. Class A Sold out 0.00% −0.27
PH Parker Hannifin Corp. Reduce -26.9% 0.45% −0.27
VAC Marriott Vacations World Reduce -65.0% 0.12% −0.27
TTMI TTM Technologies Sold out 0.00% −0.25
QDEL Quidelortho Corp. Reduce -70.4% 0.04% −0.25
AVDX Avidxchange Holdings Inc. Sold out 0.00% −0.24
VICI Vici Properties Inc. Reduce -3.0% 0.44% −0.24

Portfolio Buys Q4 2023 → Q1 2024
REG Regency Centers Corp. New 1.05% +1.05
PSA Public Storage New 0.83% +0.83
ABM Abm Industries Inc. New 0.81% +0.81
NVS Novartis AG-Sponsored ADR New 0.74% +0.74
HOG Harley-Davidson Inc. New 0.73% +0.73
XBI SS SPDR S&P Biotech ETF Add +243.9% 1.08% +0.67
TSM Taiwan Semiconductor-SP ADR Add +158.7% 1.11% +0.65
ACM Aecom New 0.63% +0.63
AZN Astrazeneca PLC-Spons ADR New 0.59% +0.59
INVH Invitation Homes Inc. New 0.58% +0.58
GSK GSK PLC-Spon ADR Add +1006.6% 0.63% +0.56
AYI Acuity Inc. Add +975.3% 0.56% +0.51
IEX Idex Corp. New 0.50% +0.50
KO The Coca-Cola Co. Add +342.0% 0.71% +0.49
AWR American States Water Co. Add +417.4% 0.68% +0.47
CSX CSX Corp. New 0.45% +0.45
BDX Becton Dickinson and Co. New 0.42% +0.42
ASML ASML Holding NV-NY Reg SHS New 0.41% +0.41
GIL Gildan Activewear Inc. New 0.41% +0.41
IBKR Interactive Brokers Gro Class A New 0.41% +0.41
BP BP PLC-Spons ADR Add +454.7% 0.52% +0.39
SMTC Semtech Corp. Add +894.2% 0.44% +0.39
AMH American Homes 4 Rent- A New 0.38% +0.38
MUR Murphy Oil Corp. New 0.34% +0.34
SPY SS SPDR S&P 500 ETF Trust-US Add +57.4% 1.76% +0.33
CCCC C4 Therapeutics Inc. New 0.32% +0.32
PHIN Phinia Inc. New 0.32% +0.32
FUL H.B. Fuller Co. New 0.32% +0.32
MDT Medtronic PLC Add +125.3% 0.75% +0.31
AMN Amn Healthcare Services Inc. New 0.31% +0.31
CRM Salesforce Inc. Add +101.5% 0.77% +0.30
PETQ Petiq Inc. New 0.30% +0.30
GE General Electric New 0.30% +0.30
ACGL Arch Capital Group Ltd. New 0.29% +0.29
TRUP Trupanion Inc. New 0.29% +0.29
BLK BlackRock Finance Inc. New 0.29% +0.29
GMED Globus Medical Inc. Class A New 0.28% +0.28
VRT Vertiv Holdings Co. Class A Add +20.3% 0.91% +0.28
APH Amphenol Corp. Class A New 0.28% +0.28
AXTA Axalta Coating Systems Ltd. Add +202.3% 0.52% +0.28
BAC Bank of America Corp. Add +101.5% 0.73% +0.28
REGN Regeneron Pharmaceuticals New 0.28% +0.28
CHRD Chord Energy Corp. New 0.28% +0.28
HSIC Henry Schein Inc. New 0.27% +0.27
UAL United Airlines Holdings Inc. New 0.26% +0.26
LIN Linde PLC Add +95.0% 0.71% +0.26
MRVL Marvell Technology Inc. New 0.26% +0.26
WMT Walmart Inc. New 0.25% +0.25
TJX TJX Companies Inc. Add +97.7% 0.72% +0.25
QQQ Invesco QQQ Trust Series 1 New 0.25% +0.25

Options Activity Q4 2023 → Q1 2024
XBI SS SPDR S&P Biotech ETF put New 60,000 $5.7M

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 818$1.1BVOO, VTRS, INTC, HPE, RYTM
Q1 2026 641$1.4BVOO, TECH, EQIX, AVGO, SMG
Q4 2025 556$1.3BVOO, TECH, SITE, APO, CRM
Q3 2025 584$1.3BIWM, SPY, IWN, XRT, XLF
Q2 2025 587$1.1BIWM, IWN, XLF, XHB, XRT
Q1 2025 488$812.9MIWN, XLF, AWK, IEX, BC
Q4 2024 481$805.0MIWM, IWN, AWK, IEX, COF
Q3 2024 456$955.2MIWN, MSFT, AXTA, UNH, V
Q2 2024 457$1.0BIWN, BAC, TSM, AMT, V
Q1 2024 563$795.8MIWM, SPY, HON, TSM, XBI