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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
CDW
CDW
$21.7B
| $248K | ﹤0.01% |
+1,589
| New | +$248K |
|
|
ILPT
827
Industrial Logistics Properties Trust
ILPT
$417M
| $248K | ﹤0.01% |
45,110
+40,961
| +987% | +$225K |
|
828
Trip.com Group
TCOM
$48.9B
| $248K | ﹤0.01% |
9,100
-89,219
| -91% | -$2.43M |
|
829
Exelixis
EXEL
$10.5B
| $247K | ﹤0.01% |
15,775
-69,598
| -82% | -$1.09M |
|
830
Old National Bancorp
ONB
$8.78B
| $246K | ﹤0.01% |
14,953
+12,906
| +630% | +$212K |
|
831
Pebblebrook Hotel Trust
PEB
$1.4B
| $245K | ﹤0.01% |
16,940
+15,617
| +1,180% | +$226K |
|
832
ProPetro Holding
PUMP
$506M
| $245K | ﹤0.01% |
30,485
+12,448
| +69% | +$100K |
|
833
Cabot Corp
CBT
$4.33B
| $244K | ﹤0.01% |
3,832
+2,048
| +115% | +$130K |
|
|
GTHX
834
DELISTED
G1 Therapeutics, Inc. Common Stock
GTHX
| $243K | ﹤0.01% |
+19,501
| New | +$243K |
|
835
Acadia Pharmaceuticals
ACAD
$4.08B
| $242K | ﹤0.01% |
14,802
+9,502
| +179% | +$155K |
|
836
Freshpet
FRPT
$2.6B
| $242K | ﹤0.01% |
4,832
+4,754
| +6,095% | +$238K |
|
837
Commercial Metals
CMC
$6.63B
| $241K | ﹤0.01% |
6,805
-632
| -8% | -$22.4K |
|
838
Organon & Co
OGN
$2.77B
| $241K | ﹤0.01% |
+10,302
| New | +$241K |
|
839
Vital Farms
VITL
$2.17B
| $241K | ﹤0.01% |
20,137
+17,267
| +602% | +$207K |
|
|
HCP
840
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $241K | ﹤0.01% |
+7,508
| New | +$241K |
|
841
Eagle Materials
EXP
$7.7B
| $240K | ﹤0.01% |
+2,241
| New | +$240K |
|
842
Diageo
DEO
$57.6B
| $239K | ﹤0.01% |
+1,410
| New | +$239K |
|
843
Vaxcyte
PCVX
$4.29B
| $239K | ﹤0.01% |
9,973
+9,667
| +3,159% | +$232K |
|
|
BRSL
844
Brightstar Lottery PLC
BRSL
$3.18B
| $238K | ﹤0.01% |
15,126
-185,263
| -92% | -$2.92M |
|
845
Rush Street Interactive
RSI
$2.05B
| $237K | ﹤0.01% |
64,452
+29,293
| +83% | +$108K |
|
846
American Vanguard Corp
AVD
$159M
| $236K | ﹤0.01% |
12,662
+6,125
| +94% | +$114K |
|
|
TUP
847
DELISTED
Tupperware Brands Corporation
TUP
| $236K | ﹤0.01% |
36,056
+35,289
| +4,601% | +$231K |
|
848
DarioHealth
DRIO
$17M
| $234K | ﹤0.01% |
2,537
+1,147
| +83% | +$106K |
|
|
CTIC
849
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $234K | ﹤0.01% |
40,371
-55,428
| -58% | -$321K |
|
850
Consensus Cloud Solutions
CCSI
$537M
| $233K | ﹤0.01% |
4,928
+4,740
| +2,521% | +$224K |
|