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
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
976
nCino
NCNO
$3.47B
| $141K | ﹤0.01% |
+1,776
| New | +$141K |
|
|
LMNX
977
DELISTED
Luminex Corp
LMNX
| $141K | ﹤0.01% |
5,382
-6,115
| -53% | -$160K |
|
|
MGIC
978
Magic Software Enterprises
MGIC
$1.01B
| $140K | ﹤0.01% |
10,728
+9,327
| +666% | +$122K |
|
979
Pearson
PSO
$9.05B
| $140K | ﹤0.01% |
19,753
+7,790
| +65% | +$55.2K |
|
980
iShares Core S&P Total US Stock Market ETF
ITOT
$76.8B
| $139K | ﹤0.01% |
+1,850
| New | +$139K |
|
981
Lemonade
LMND
$3.73B
| $139K | ﹤0.01% |
+2,797
| New | +$139K |
|
982
Invesco WilderHill Clean Energy ETF
PBW
$365M
| $139K | ﹤0.01% |
2,298
+200
| +10% | +$12.1K |
|
983
iShares Russell 1000 ETF
IWB
$44.6B
| $138K | ﹤0.01% |
741
+616
| +493% | +$115K |
|
984
Flex
FLEX
$21.7B
| $137K | ﹤0.01% |
16,403
+12,166
| +287% | +$102K |
|
|
ARNA
985
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $137K | ﹤0.01% |
1,832
-796
| -30% | -$59.5K |
|
|
VSLR
986
DELISTED
VIVINT SOLAR, INC.
VSLR
| $137K | ﹤0.01% |
+3,243
| New | +$137K |
|
987
Arch Capital
ACGL
$33.8B
| $136K | ﹤0.01% |
4,659
-8,078
| -63% | -$236K |
|
988
Dynavax Technologies
DVAX
$1.14B
| $136K | ﹤0.01% |
31,519
-56,984
| -64% | -$246K |
|
989
Innovator IBD 50 ETF
FFTY
$81.2M
| $136K | ﹤0.01% |
+3,646
| New | +$136K |
|
990
Conduent
CNDT
$442M
| $135K | ﹤0.01% |
42,700
+34,761
| +438% | +$110K |
|
991
Energizer
ENR
$1.94B
| $135K | ﹤0.01% |
3,467
+3,253
| +1,520% | +$127K |
|
|
ECOM
992
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $135K | ﹤0.01% |
9,392
-10,794
| -53% | -$155K |
|
993
Guidewire Software
GWRE
$21.3B
| $134K | ﹤0.01% |
1,292
-1,981
| -61% | -$205K |
|
994
Trustmark
TRMK
$2.42B
| $133K | ﹤0.01% |
6,213
+5,331
| +604% | +$114K |
|
995
iShare MSCI Eurozone ETF
EZU
$7.98B
| $132K | ﹤0.01% |
3,484
-8,270
| -70% | -$313K |
|
996
Steven Madden
SHOO
$2.22B
| $132K | ﹤0.01% |
6,803
+6,087
| +850% | +$118K |
|
|
TFFP
997
DELISTED
TFF Pharmaceuticals, Inc. Common Stock
TFFP
| $132K | ﹤0.01% |
+287
| New | +$132K |
|
998
Atlanta Braves Holdings Series B
BATRK
$2.62B
| $131K | ﹤0.01% |
+6,262
| New | +$131K |
|
999
International Paper
IP
$24.5B
| $131K | ﹤0.01% |
+3,435
| New | +$131K |
|
1000
Gibraltar Industries
ROCK
$1.79B
| $131K | ﹤0.01% |
+2,021
| New | +$131K |
|