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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
976
Purple Innovation
PRPL
$116M
| $221K | ﹤0.01% |
+6,715
| New | +$221K |
|
977
CONMED
CNMD
$1.67B
| $220K | ﹤0.01% |
+1,971
| New | +$220K |
|
978
ProShares UltraPro Short Russell2000
SRTY
$77.6M
| $220K | ﹤0.01% |
+2,540
| New | +$220K |
|
979
ProShares UltraShort QQQ
QID
$277M
| $219K | ﹤0.01% |
+1,545
| New | +$219K |
|
980
SPX Corp
SPXC
$9.4B
| $219K | ﹤0.01% |
4,025
+3,373
| +517% | +$184K |
|
981
Arrow Electronics
ARW
$6.66B
| $217K | ﹤0.01% |
2,238
+1,079
| +93% | +$105K |
|
982
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.81B
| $217K | ﹤0.01% |
+18,471
| New | +$217K |
|
983
Equity Lifestyle Properties
ELS
$11.9B
| $216K | ﹤0.01% |
3,423
-2,329
| -40% | -$147K |
|
|
EQC
984
DELISTED
Equity Commonwealth
EQC
| $216K | ﹤0.01% |
+7,951
| New | +$216K |
|
|
CHS
985
DELISTED
Chicos FAS, Inc.
CHS
| $216K | ﹤0.01% |
136,278
+109,475
| +408% | +$174K |
|
986
Methanex
MEOH
$3.08B
| $215K | ﹤0.01% |
+4,667
| New | +$215K |
|
|
TXNM
987
TXNM Energy, Inc.
TXNM
$6B
| $214K | ﹤0.01% |
+4,416
| New | +$214K |
|
988
Cincinnati Financial
CINF
$24.5B
| $211K | ﹤0.01% |
2,424
-7,344
| -75% | -$639K |
|
989
Canadian Solar
CSIQ
$722M
| $211K | ﹤0.01% |
4,118
-37,268
| -90% | -$1.91M |
|
990
Palantir
PLTR
$390B
| $211K | ﹤0.01% |
+9,000
| New | +$211K |
|
991
Haverty Furniture Companies
HVT
$390M
| $209K | ﹤0.01% |
7,587
+4,958
| +189% | +$137K |
|
992
Manchester United
MANU
$2.76B
| $209K | ﹤0.01% |
+12,533
| New | +$209K |
|
993
Pitney Bowes
PBI
$1.97B
| $209K | ﹤0.01% |
33,988
+21,245
| +167% | +$131K |
|
994
Alkermes
ALKS
$4.57B
| $208K | ﹤0.01% |
10,465
-30,412
| -74% | -$604K |
|
995
ProShares UltraShort Silver
ZSL
$19.4M
| $206K | ﹤0.01% |
1,888
+1,662
| +735% | +$181K |
|
|
MILE
996
DELISTED
Metromile, Inc. Common Stock
MILE
| $206K | ﹤0.01% |
+13,286
| New | +$206K |
|
997
Delek US
DK
$1.72B
| $205K | ﹤0.01% |
12,811
+5,552
| +76% | +$88.8K |
|
998
STAG Industrial
STAG
$6.8B
| $205K | ﹤0.01% |
+6,546
| New | +$205K |
|
999
Global X MSCI China Consumer Discretionary ETF
CHIQ
$249M
| $204K | ﹤0.01% |
+5,754
| New | +$204K |
|
1000
Edison International
EIX
$21.6B
| $203K | ﹤0.01% |
+3,238
| New | +$203K |
|