Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
Chefs' Warehouse
CHEF
$2.69B
| $179K | ﹤0.01% |
+5,390
| New | +$179K |
|
827
Evolent Health
EVH
$1.08B
| $179K | ﹤0.01% |
6,381
-10,126
| -61% | -$284K |
|
|
JWN
828
DELISTED
Nordstrom
JWN
| $179K | ﹤0.01% |
+11,137
| New | +$179K |
|
829
IAMGOLD
IAG
$6.35B
| $178K | ﹤0.01% |
69,084
+23,608
| +52% | +$60.8K |
|
830
RenaissanceRe
RNR
$11.5B
| $177K | ﹤0.01% |
966
+400
| +71% | +$73.3K |
|
|
JOAN
831
DELISTED
JOANN, Inc. Common Stock
JOAN
| $177K | ﹤0.01% |
+62,451
| New | +$177K |
|
832
Azenta
AZTA
$1.43B
| $176K | ﹤0.01% |
+3,028
| New | +$176K |
|
|
UROY
833
Uranium Royalty Corp
UROY
$430M
| $176K | ﹤0.01% |
74,656
+51,656
| +225% | +$122K |
|
|
AIMC
834
DELISTED
Altra Industrial Motion Corp.
AIMC
| $176K | ﹤0.01% |
+2,954
| New | +$176K |
|
835
FTC Solar
FTCI
$102M
| $173K | ﹤0.01% |
6,474
+4,873
| +304% | +$130K |
|
836
International Seaways
INSW
$2.32B
| $173K | ﹤0.01% |
+4,674
| New | +$173K |
|
837
Pulmonx
LUNG
$68.9M
| $173K | ﹤0.01% |
+20,627
| New | +$173K |
|
838
Topgolf Callaway Brands
MODG
$1.78B
| $173K | ﹤0.01% |
+8,780
| New | +$173K |
|
839
Progress Software
PRGS
$1.85B
| $173K | ﹤0.01% |
+3,434
| New | +$173K |
|
|
PFSW
840
DELISTED
PFSweb, Inc.
PFSW
| $173K | ﹤0.01% |
+28,221
| New | +$173K |
|
841
WIX.com
WIX
$9.44B
| $172K | ﹤0.01% |
2,251
+68
| +3% | +$5.2K |
|
842
iShares Russell 2000 Growth ETF
IWO
$12.8B
| $171K | ﹤0.01% |
800
| – | – |
|
843
Piper Sandler
PIPR
$6.13B
| $171K | ﹤0.01% |
+1,321
| New | +$171K |
|
844
Genmab
GMAB
$17.6B
| $170K | ﹤0.01% |
4,027
+4,016
| +36,509% | +$170K |
|
|
ME
845
DELISTED
23andMe Holding Co. Class A Common Stock
ME
| $170K | ﹤0.01% |
3,950
-2,029
| -34% | -$87.3K |
|
846
The RealReal
REAL
$1.08B
| $169K | ﹤0.01% |
135,309
+129,435
| +2,204% | +$162K |
|
847
Selective Insurance
SIGI
$4.85B
| $169K | ﹤0.01% |
+1,918
| New | +$169K |
|
848
Upland Software
UPLD
$70.8M
| $169K | ﹤0.01% |
23,805
-11,787
| -33% | -$83.7K |
|
|
ENLC
849
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $169K | ﹤0.01% |
+13,806
| New | +$169K |
|
850
iShares MSCI ACWI ex US ETF
ACWX
$6.81B
| $168K | ﹤0.01% |
3,705
+3,605
| +3,605% | +$163K |
|