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 |
Apple
AAPL
|
+$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$82.5M |
| 3 |
Intel
INTC
|
+$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
+$39.4M |
| 5 |
Uber
UBER
|
+$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$130M |
| 2 |
Pinduoduo
PDD
|
+$95.7M |
| 3 |
Boeing
BA
|
+$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$40.7M |
| 5 |
Microsoft
MSFT
|
+$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1051
Atlanta Braves Holdings Series B
BATRK
$2.62B
| $150K | ﹤0.01% |
+3,944
| New | +$150K |
|
|
INN
1052
Summit Hotel Properties
INN
$613M
| $150K | ﹤0.01% |
22,015
+17,435
| +381% | +$119K |
|
1053
Defiance R2000 Enhanced Options Income ETF
IWMY
$142M
| $150K | ﹤0.01% |
+5,029
| New | +$150K |
|
1054
Array Technologies
ARRY
$1.25B
| $149K | ﹤0.01% |
24,731
-77,957
| -76% | -$470K |
|
1055
Verra Mobility
VRRM
$3.87B
| $149K | ﹤0.01% |
+6,200
| New | +$149K |
|
1056
Pacific Biosciences
PACB
$366M
| $148K | ﹤0.01% |
+81,022
| New | +$148K |
|
1057
Beam Therapeutics
BEAM
$2.01B
| $146K | ﹤0.01% |
+5,896
| New | +$146K |
|
1058
iShares International Developed Real Estate ETF
IFGL
$97.4M
| $146K | ﹤0.01% |
+7,601
| New | +$146K |
|
1059
Lithia Motors
LAD
$8.64B
| $146K | ﹤0.01% |
+410
| New | +$146K |
|
1060
Allogene Therapeutics
ALLO
$246M
| $145K | ﹤0.01% |
68,311
+41,181
| +152% | +$87.4K |
|
1061
Clearway Energy Class C
CWEN
$3.35B
| $145K | ﹤0.01% |
5,581
-819
| -13% | -$21.3K |
|
1062
Manhattan Associates
MANH
$12.8B
| $145K | ﹤0.01% |
540
-2,912
| -84% | -$782K |
|
|
TSLW
1063
DELISTED
Tradr 1.5X Long TSLA Weekly ETF
TSLW
| $145K | ﹤0.01% |
+2,445
| New | +$145K |
|
1064
Gartner
IT
$17.6B
| $144K | ﹤0.01% |
298
+254
| +577% | +$123K |
|
1065
SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$12.7B
| $144K | ﹤0.01% |
3,216
+2,925
| +1,005% | +$131K |
|
|
DQ
1066
Daqo New Energy
DQ
$1.77B
| $143K | ﹤0.01% |
7,374
-7,531
| -51% | -$146K |
|
1067
Mistras Group
MG
$301M
| $143K | ﹤0.01% |
15,823
+13,395
| +552% | +$121K |
|
1068
Cassava Sciences
SAVA
$101M
| $143K | ﹤0.01% |
+60,921
| New | +$143K |
|
1069
Astrana Health
ASTH
$1.34B
| $143K | ﹤0.01% |
4,565
+4,268
| +1,437% | +$134K |
|
1070
IMAX
IMAX
$1.67B
| $142K | ﹤0.01% |
5,579
-118,259
| -95% | -$3.01M |
|
1071
Agilon Health
AGL
$468M
| $141K | ﹤0.01% |
74,230
+66,125
| +816% | +$126K |
|
1072
Genesco
GCO
$355M
| $141K | ﹤0.01% |
+3,315
| New | +$141K |
|
1073
Alliant Energy
LNT
$16.4B
| $141K | ﹤0.01% |
2,399
+1,742
| +265% | +$102K |
|
|
EU
1074
enCore Energy
EU
$438M
| $140K | ﹤0.01% |
41,306
+19,277
| +88% | +$65.3K |
|
1075
Nuvation Bio
NUVB
$1.14B
| $140K | ﹤0.01% |
52,737
+5,040
| +11% | +$13.4K |
|