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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 | |
|---|---|---|---|---|---|---|
751
Option Care Health
OPCH
$3.45B
| – | – |
-35,215
| Closed | -$978K |
|
752
Oracle
ORCL
$374B
| – | – |
-2,838
| Closed | -$798K |
|
753
Old Republic International
ORI
$10.5B
| – | – |
-8,123
| Closed | -$345K |
|
754
OneSpan
OSPN
$574M
| – | – |
-17,350
| Closed | -$276K |
|
755
Pacific Biosciences
PACB
$435M
| – | – |
-17,161
| Closed | -$22K |
|
756
Pitney Bowes
PBI
$2.37B
| – | – |
-53,348
| Closed | -$609K |
|
757
Phillips Edison & Co
PECO
$5.46B
| – | – |
-50,922
| Closed | -$1.75M |
|
758
PennyMac Financial
PFSI
$3.92B
| – | – |
-51,821
| Closed | -$6.42M |
|
759
Pilgrim's Pride
PPC
$6.51B
| – | – |
-69,702
| Closed | -$2.84M |
|
760
PPG Industries
PPG
$24.6B
| – | – |
-5,470
| Closed | -$575K |
|
|
PRO
761
DELISTED
PROS Holdings
PRO
| – | – |
-33,681
| Closed | -$772K |
|
762
Personalis
PSNL
$1.35B
| – | – |
-18,043
| Closed | -$118K |
|
|
PSTL
763
Postal Realty Trust
PSTL
$694M
| – | – |
-47,778
| Closed | -$750K |
|
764
Patterson-UTI
PTEN
$3.98B
| – | – |
-34,407
| Closed | -$178K |
|
765
PayPal
PYPL
$48.9B
| – | – |
-5,498
| Closed | -$369K |
|
766
Papa John's
PZZA
$984M
| – | – |
-43,400
| Closed | -$2.09M |
|
767
Invesco QQQ Trust
QQQ
$453B
| – | – |
-26,313
| Closed | -$15.8M |
|
768
Quanterix
QTRX
$164M
| – | – |
-19,571
| Closed | -$106K |
|
769
RBC Bearings
RBC
$17.4B
| – | – |
-2,086
| Closed | -$814K |
|
770
Roblox
RBLX
$25.5B
| – | – |
-24,946
| Closed | -$3.46M |
|
771
Redwire
RDW
$2.06B
| – | – |
-46,024
| Closed | -$414K |
|
772
Regency Centers
REG
$14.7B
| – | – |
-27,133
| Closed | -$1.98M |
|
773
Transocean
RIG
$5.89B
| – | – |
-79,091
| Closed | -$247K |
|
774
Rambus
RMBS
$9.87B
| – | – |
-4,292
| Closed | -$447K |
|
775
Rockwell Automation
ROK
$53.4B
| – | – |
-659
| Closed | -$230K |
|
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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.