Q2 2026 13F · SEC CIK 1738902

Atom Investors LP

Hedge fundFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $1.1B
Reported positions: 818
Top holdings a year, 3 yrs: +16.7%
Assets under management: $6.8B

Atom Investors LP is a hedge fund that reported 818 positions worth $1.1B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Vanguard S&p 500 ETF (VOO, 4.1%), Viatris Inc (VTRS, 1.0%), Intel Corp (INTC, 0.9%). A portfolio copying its top holdings returned 16.7% a year over the last 3 years, against 20.4% for the S&P 500.

Atom Investors LP holdings largest 50 of 818 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Atom Investors LP 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
VOOVanguard S&p 500 ETF	4.1%	2.9%	66,972	-0.1%	$46.0M
VTRSViatris Inc	1.0%	—	705,683	—	$11.2M
INTCIntel Corp	0.9%	—	76,015	—	$10.6M
HPEHewlett Packard Enterprise	0.9%	—	215,283	—	$9.7M
RYTMRhythm Pharmaceuticals Inc	0.7%	—	73,465	—	$8.2M
ESABEsab Corporation	0.7%	—	82,405	—	$8.1M
EWZIshares Inc	0.7%	—	234,771	—	$8.1M
GXOGXO Logistics Inc	0.7%	—	156,873	—	$8.0M
AMATApplied Matls Inc	0.6%	0.5%	9,715	-49.5%	$7.0M
AVGOBroadcom Inc	0.6%	0.8%	18,060	-51.4%	$6.8M
NVDANvidia Corporation Com	0.6%	0.7%	33,901	-40.9%	$6.8M
VSECVse Corp	0.6%	—	28,386	—	$6.5M
AAPLApple Inc	0.6%	—	21,814	—	$6.3M
IMNMImmunome Inc	0.6%	0.5%	297,489	-3.1%	$6.3M
JBTJbt Marel Corporation	0.5%	—	42,492	—	$6.2M
VRSNVerisign Inc.	0.5%	—	24,293	—	$6.1M
EQIXEquinix Inc	0.5%	0.8%	5,714	-52.2%	$6.0M
RSPInvesco S&p 500 Equal Weight ETF	0.5%	—	27,764	—	$5.9M
HDHome Depot Inc Com	0.5%	—	16,683	—	$5.9M
RAREUltragenyx Pharmaceutical in	0.5%	—	171,771	—	$5.7M
GGGGraco Inc	0.5%	—	74,973	—	$5.7M
AMEAmetek Inc	0.5%	—	22,891	—	$5.5M
MSFTMicrosoft Corp	0.5%	—	14,579	—	$5.4M
TTMITTM Technologies, Inc.	0.5%	—	28,908	—	$5.4M
AMZNAmazon Com Inc Com	0.5%	0.7%	22,644	-53.9%	$5.4M
GOOGAlphabet Inc	0.5%	—	15,198	—	$5.4M
ZETAZeta Global Holdings Corp	0.5%	—	264,086	—	$5.2M
SLGNSilgan Holdings Inc	0.4%	—	107,324	—	$5.0M
FERGFerguson Enterprises Inc	0.4%	—	20,966	—	$5.0M
SMTCSemtech Corp	0.4%	—	30,064	—	$4.9M
MUMicron Technology Inc	0.4%	—	4,068	—	$4.7M
ABTAbbott Laboratories	0.4%	—	50,174	—	$4.6M
LECOLincoln Electric Holdings Inc	0.4%	—	16,908	—	$4.5M
LRCXLam Research Corp	0.4%	—	9,535	—	$4.1M
EDConsolidated Edison Inc	0.4%	—	35,657	—	$3.9M
MGRCMcgrath Rentcorp	0.3%	—	32,013	—	$3.9M
LOWLowes Cos Inc	0.3%	—	17,565	—	$3.9M
MAMastercard Inc.	0.3%	—	7,408	—	$3.8M
NPKNational Presto Inds Inc	0.3%	—	30,383	—	$3.8M
HNIHni Corp	0.3%	—	93,877	—	$3.8M
RSReliance Inc	0.3%	0.6%	10,023	-65.7%	$3.7M
SUPNSupernus Pharmaceuticals	0.3%	—	79,936	—	$3.7M
GILDGilead Sciences	0.3%	—	29,028	—	$3.7M
DNTHDianthus Therapeutics Inc	0.3%	0.6%	37,228	-65.5%	$3.6M
CNMCore & Main Inc	0.3%	—	74,801	—	$3.6M
CELCCelcuity Inc	0.3%	0.6%	34,488	-54.8%	$3.6M
PEPPepsico Inc	0.3%	—	26,345	—	$3.6M
SNDXSyndax Pharmaceuticals Inc	0.3%	—	162,524	—	$3.6M
NRGNrg Energy Inc	0.3%	0.5%	24,183	-48.5%	$3.5M
MBUUMalibu Boats Inc	0.3%	—	127,366	—	$3.5M

What Atom Investors LP bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

No position grew by more than 5%.

Reduced

RS Reliance Inc-65.7% shares
DNTH Dianthus Therapeutics Inc-65.5% shares
CELC Celcuity Inc-54.8% shares
AMZN Amazon Com Inc Com-53.9% shares
EQIX Equinix Inc-52.2% shares
AVGO Broadcom Inc-51.4% shares
AMAT Applied Matls Inc-49.5% shares
NRG Nrg Energy Inc-48.5% shares

Left the top 50

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +23.7% /yr; S&P 500 +20.1%
3 years: +16.7% /yr; S&P 500 +20.4%
5 years: +6.0% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$1.1B	818
Q1 2026	$1.4B	641
Q4 2025	$1.3B	556
Q3 2025	$1.3B	584
Q2 2025	$1.1B	587
Q1 2025	$812.9M	488
Q4 2024	$805.0M	481
Q3 2024	$955.2M	456
Q2 2024	$1.0B	457
Q1 2024	$795.8M	563
Q4 2023	$566.2M	439
Q3 2023	$438.6M	421

Questions about Atom Investors LP's portfolio

What stocks does Atom Investors LP own?

Atom Investors LP's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 818 positions worth $1.1B. The largest are Vanguard S&p 500 ETF (VOO) at 4.1%, Viatris Inc (VTRS) at 1.0%, Intel Corp (INTC) at 0.9%, Hewlett Packard Enterprise (HPE) at 0.9% and Rhythm Pharmaceuticals Inc (RYTM) at 0.7%.

What did Atom Investors LP buy last quarter?

Atom Investors LP opened no new positions and grew none by more than 5% among its largest holdings in Q2 2026.

What did Atom Investors LP sell last quarter?

In Q2 2026, Atom Investors LP cut from its top 50 Bio-Techne Corp (TECH), cut from its top 50 Scotts Miracle-Gro Co Cl A (SMG), cut from its top 50 Lkq Corp (LKQ), cut from its top 50 Carlisle Cos Inc (CSL), cut from its top 50 Ameren Corp (AEE), Reliance Inc (RS) (-65.7% shares), Dianthus Therapeutics Inc (DNTH) (-65.5% shares) and Celcuity Inc (CELC) (-54.8% shares), compared with its Q1 2026 filing.

How has Atom Investors LP's portfolio performed?

A portfolio copying Atom Investors LP's 20 largest 13F holdings each quarter, from the day each filing was public, returned +16.7% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +23.7% against +20.1%. Over 5 years: +6.0% a year against +11.6%.

When is Atom Investors LP's next 13F filing due?

13F filings are due 45 days after each quarter ends. Atom Investors LP's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Atom Investors LP manage?

Atom Investors LP reported $6.8B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $1.1B.