Stocks/Funds/CIK 1738902

Atom Investors LP

index-like (500+ pos)
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1738902
Assets
$1.39B
+71.7% YoY
Holdings
639
Lifetime alpha vs market
+1.79% annual
Average hold time
1.5 yr
median 1.3 yr

Quarterly history

Cum return +179% vs S&P +152% · α +27% lifetimeAUM $1.4B · peak $1.5BFlow $87M (+7%)2018-122020-032021-062022-092023-122025-032026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-6.74%
trims when stocks drop
when a holding falls −10%+
Middle response
-11.33%
baseline attrition
Rally response
-27.68%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
VOOVanguard S&P 500 ETF$40M2.9%0.5 yr
TECHBio-Techne Corporation$17M1.2%-10.4%0.5 yr
EQIXEquinix, Inc.$12M0.8%+23.0%4.0 yr
AVGOBroadcom Inc.$12M0.8%+86.0%3.8 yr
SMGThe Scotts Miracle-Gro C$11M0.8%+15.8%1.8 yr
AMZNAmazon.com, Inc.$10M0.7%+9.5%7.0 yr
NVDANVIDIA Corporation$10M0.7%+60.9%4.0 yr
LKQLKQ Corporation$10M0.7%-28.4%0.8 yr
CSLCarlisle Companies Incor$9M0.7%-0.9%3.8 yr
DNTHDianthus Therapeutics, I$9M0.6%+362.6%0.8 yr
AEEAmeren Corporation$9M0.6%+12.7%3.0 yr
RSReliance Steel & Aluminu$9M0.6%+7.0%1.0 yr
WEXWEX Inc.$9M0.6%-2.5%0.3 yr
CELCCelcuity Inc.$9M0.6%+1029.0%0.5 yr
HRBH&R Block, Inc.$9M0.6%-40.0%0.8 yr

Portfolio composition (YoY)

Industry mix
Biotechnology8.7%+5.3pp$121M
Asset Management5.1%-15.8pp$71M
Unknown3.7%+1.5pp$52M
Semiconductors3.6%+1.2pp$51M
Regulated Electric3.2%+2.3pp$44M
Banks - Regional3.1%-3.4pp$44M
Software - Application3.0%+0.3pp$41M
Software - Infrastructure2.7%+1.8pp$38M
Specialty Retail2.5%+1.9pp$34M
Industrial - Machinery2.3%-1.2pp$33M
Country
US90.9%-2.6pp
Unknown3.7%+1.5pp
GB1.0%+0.4pp
IE1.0%+0.3pp
KY0.6%+0.1pp
BR0.5%
UY0.3%
LU0.2%
Top 5: 6.5% · Top 10: 10.0% · Top 25: 18.7%

Winners

TickerPrev $PnLYoY %
NVDA$3M+0.00B60.9%
WTTR$3M+0.00B50.0%
AVGO$1M+0.00B86.0%
HBAN$6M+0.00B8.2%
EQIX$2M+0.00B23.0%

Losers

TickerPrev $PnLYoY %
BLDR$0M-0.00B-34.1%
CSL$4M-0.00B-0.9%

Top buys this quarter · 15

EQIX Equinix, Inc.+$9M
AVGO Broadcom Inc.+$9M
WEX WEX Inc.new+$9M
CDE Coeur Mining, Inc.+$7M
AMZN Amazon.com, Inc.+$7M
RS Reliance Steel & Aluminum Co.+$7M
ALK Alaska Air Group, Inc.+$7M
BURL Burlington Stores, Inc.+$7M
HBAN Huntington Bancshares Incorpor+$6M
PTEN Patterson-UTI Energy, Inc.+$6M

Top sells this quarter · 15

LBRT Liberty Energy Inc.$14M
SITE SiteOne Landscape Supply, Inc.$14M
GLNG Golar LNG Limited$14M
ATRO Astronics Corporationexit$13M
FFIV F5, Inc.exit$12M
DVA DaVita Inc.exit$11M
COHU Cohu, Inc.$10M
CRM Salesforce, Inc.exit$10M
SHW The Sherwin-Williams Companyexit$10M
DAN Dana Incorporated$9M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$1.39B639+18.04%+17.59%+0.45%+0.09B
2025-12-31$1.26B555+9.71%+17.72%-8.01%-0.08B
2025-09-30$1.31B583+9.56%+17.52%-7.96%+0.13B
2025-06-30$1.12B586+12.27%+14.94%-2.68%+0.27B
2025-03-31$811M487+5.51%+8.30%-2.79%+0.03B
2024-12-31$805M480+17.78%+24.89%-7.10%-0.17B
2024-09-30$955M456+29.31%+36.04%-6.73%-0.12B
2024-06-30$994M455+18.43%+24.49%-6.06%+0.21B
2024-03-31$791M560+25.74%+29.62%-3.89%+0.18B
2023-12-31$563M436+21.49%+26.18%-4.68%+0.07B
2023-09-30$438M419+12.31%+21.57%-9.26%+0.18B
2023-06-30$262M279+9.02%+19.42%-10.40%+0.07B
2023-03-31$183M246-15.06%-7.82%-7.24%-0.02B
2022-12-31$200M215-13.55%-18.17%+4.62%-0.09B
2022-09-30$283M273-11.83%-15.51%+3.67%+0.06B
2022-06-30$228M245-7.53%-10.62%+3.09%+0.05B