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Atom Investors Portfolio holdings
AUM
$1.4B
1-Year Est. Return
23.77%
This Fund
S&P 500
This Quarter
Est. Return
+4.81%
1 Year Est. Return
+23.77%
3 Year Est. Return
+63.44%
5 Year Est. Return
+52.26%
10 Year Est. Return
–
AUM
$1.26B
AUM Growth
-$59.7M
(-4.5%)
Cap. Flow
-$53.1M
Cap. Flow
% of AUM
-4.22%
Top 10 Holdings %
Top 10 Hldgs %
13.02%
Holding
858
New
274
Increased
136
Reduced
131
Closed
302
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Vanguard S&P 500 ETF
VOO
|
+$41.7M |
| 2 |
Bio-Techne
TECH
|
+$21.4M |
| 3 |
SiteOne Landscape Supply
SITE
|
+$15.1M |
| 4 |
Casella Waste Systems
CWST
|
+$11.4M |
| 5 |
F5
FFIV
|
+$10.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$97.9M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$67.3M |
| 3 |
iShares Russell 2000 Value ETF
IWN
|
+$40.2M |
| 4 |
State Street SPDR S&P Retail ETF
XRT
|
+$19.5M |
| 5 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$17.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 17.84% |
| 2 | Healthcare | 17.1% |
| 3 | Consumer Discretionary | 15.33% |
| 4 | Technology | 13% |
| 5 | Financials | 7.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
726
Molina Healthcare
MOH
$10.2B
| – | – |
-28,071
| Closed | -$5.37M |
|
727
Morningstar
MORN
$7.34B
| – | – |
-3,863
| Closed | -$896K |
|
728
Monolithic Power Systems
MPWR
$64.7B
| – | – |
-271
| Closed | -$249K |
|
|
MRC
729
DELISTED
MRC Global
MRC
| – | – |
-234,584
| Closed | -$3.38M |
|
730
Maravai LifeSciences
MRVI
$996M
| – | – |
-55,047
| Closed | -$158K |
|
731
M&T Bank
MTB
$35.8B
| – | – |
-11,294
| Closed | -$2.23M |
|
732
Vail Resorts
MTN
$5.45B
| – | – |
-20,755
| Closed | -$3.1M |
|
733
iShares MSCI USA Momentum Factor ETF
MTUM
$24.9B
| – | – |
-25,821
| Closed | -$6.62M |
|
734
Myriad Genetics
MYGN
$507M
| – | – |
-53,129
| Closed | -$384K |
|
735
Nabors Industries
NBR
$1.22B
| – | – |
-9,815
| Closed | -$401K |
|
736
Nasdaq
NDAQ
$53.2B
| – | – |
-4,497
| Closed | -$398K |
|
737
NextEra Energy
NEE
$183B
| – | – |
-3,115
| Closed | -$235K |
|
738
Nkarta
NKTX
$154M
| – | – |
-35,701
| Closed | -$73.9K |
|
739
Napco Security Technologies
NSSC
$1.3B
| – | – |
-6,115
| Closed | -$263K |
|
740
NETGEAR
NTGR
$616M
| – | – |
-7,335
| Closed | -$238K |
|
741
NovoCure
NVCR
$1.77B
| – | – |
-13,740
| Closed | -$178K |
|
742
nVent Electric
NVT
$23.4B
| – | – |
-7,592
| Closed | -$749K |
|
743
New York Times
NYT
$12.3B
| – | – |
-27,014
| Closed | -$1.55M |
|
744
Orthofix Medical
OFIX
$477M
| – | – |
-21,784
| Closed | -$319K |
|
745
Omega Healthcare
OHI
$15B
| – | – |
-31,642
| Closed | -$1.34M |
|
746
Oneok
OKE
$56.1B
| – | – |
-11,127
| Closed | -$812K |
|
747
Okta
OKTA
$24.4B
| – | – |
-2,675
| Closed | -$245K |
|
748
Ollie's Bargain Outlet
OLLI
$4.4B
| – | – |
-80,643
| Closed | -$10.4M |
|
749
Omeros
OMER
$863M
| – | – |
-53,266
| Closed | -$218K |
|
750
Old National Bancorp
ONB
$10.1B
| – | – |
-61,568
| Closed | -$1.35M |
|
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Atom Investors's Q4 2025 Portfolio in Review
As of Q4 2025, Atom Investors held 858 positions worth $1.26B, down 4.5% from $1.32B the previous quarter. Its ten largest holdings account for 13% of the portfolio.
Atom Investors withdrew a net $53.1M in Q4 2025, closing 302 positions and reducing 131 holdings. Its most notable exit was iShares Russell 2000 ETF, an estimated $97.9M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 18% of assets, up from 11% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Atom Investors opened a new position in Vanguard S&P 500 ETF worth $42M.
- Atom Investors's largest Q4 2025 buy was Vanguard S&P 500 ETF: 67,041 shares worth $42M.
- Atom Investors added most to SiteOne Landscape Supply in Q4 2025, an estimated $15.1M increase.
- Atom Investors's biggest Q4 2025 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $67.3M.
- Atom Investors fully exited iShares Russell 2000 ETF in Q4 2025, selling an estimated $97.9M.
- Atom Investors's ten largest holdings make up 13% of its $1.26B portfolio in Q4 2025.
- Atom Investors opened 274 new positions and closed 302 in Q4 2025.
- Atom Investors's portfolio value fell 4.5% quarter-over-quarter to $1.26B.
Based on Atom Investors's 13F filing for Q4 2025, filed 17 Feb 2026.