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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 | |
|---|---|---|---|---|---|---|
501
Corsair Gaming
CRSR
$1.13B
| $202K | 0.02% |
+34,034
| New | +$237K |
|
502
C4 Therapeutics
CCCC
$385M
| $200K | 0.02% |
+104,964
| New | +$249K |
|
503
VanEck Oil Services ETF
OIH
$2.06B
| $200K | 0.02% |
703
-26,326
| -97% | -$7.38M |
|
504
Bit Digital
BTBT
$463M
| $195K | 0.02% |
+103,025
| New | +$298K |
|
505
AdvanSix
ASIX
$541M
| $189K | 0.02% |
+10,951
| New | +$191K |
|
506
Quantum Computing Inc
QUBT
$1.83B
| $185K | 0.01% |
+18,026
| New | +$257K |
|
|
UDMY
507
DELISTED
Udemy
UDMY
| $180K | 0.01% |
30,831
+6,319
| +26% | +$36.9K |
|
508
TTEC Holdings
TTEC
$121M
| $174K | 0.01% |
+48,273
| New | +$164K |
|
509
Oscar Health
OSCR
$9.41B
| $171K | 0.01% |
11,888
-50,836
| -81% | -$879K |
|
510
Wabash National
WNC
$512M
| $163K | 0.01% |
18,808
-1,837
| -9% | -$16K |
|
511
Prothena Corp
PRTA
$425M
| $163K | 0.01% |
17,026
-4,289
| -20% | -$43.7K |
|
512
Compugen
CGEN
$222M
| $160K | 0.01% |
104,396
-226,171
| -68% | -$376K |
|
513
Plug Power
PLUG
$2.87B
| $154K | 0.01% |
+78,375
| New | +$205K |
|
514
Methode Electronics
MEI
$496M
| $153K | 0.01% |
+23,106
| New | +$164K |
|
|
BZAI
515
Blaize Holdings
BZAI
$112M
| $145K | 0.01% |
+74,172
| New | +$240K |
|
516
Teladoc Health
TDOC
$1.22B
| $142K | 0.01% |
20,310
-67,625
| -77% | -$529K |
|
517
Coursera
COUR
$1.52B
| $136K | 0.01% |
+18,445
| New | +$161K |
|
518
Rocket Pharmaceuticals
RCKT
$340M
| $128K | 0.01% |
36,480
-16,854
| -32% | -$57.7K |
|
519
KULR Technology Group
KULR
$123M
| $127K | 0.01% |
+43,026
| New | +$158K |
|
520
NET Power
NPWR
$126M
| $126K | 0.01% |
+55,094
| New | +$172K |
|
521
Sana Biotechnology
SANA
$871M
| $124K | 0.01% |
+30,402
| New | +$136K |
|
522
Clover Health Investments
CLOV
$2.2B
| $121K | 0.01% |
51,676
-774,915
| -94% | -$2.12M |
|
523
Unisys
UIS
$209M
| $121K | 0.01% |
+43,730
| New | +$137K |
|
|
ACH
524
Accendra Health
ACH
$237M
| $118K | 0.01% |
41,974
+19,220
| +84% | +$68.7K |
|
525
Portillo's
PTLO
$331M
| $115K | 0.01% |
+25,321
| New | +$132K |
|
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FCP
SC
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.