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 | |
|---|---|---|---|---|---|---|
876
Commault Systems
CVLT
$8.04B
| $292K | ﹤0.01% |
+5,284
| New | +$292K |
|
877
M/I Homes
MHO
$4.14B
| $292K | ﹤0.01% |
6,614
+464
| +8% | +$20.5K |
|
878
Ternium
TX
$6.87B
| $289K | ﹤0.01% |
9,967
+2,234
| +29% | +$64.8K |
|
879
Yext
YEXT
$1.07B
| $289K | ﹤0.01% |
+18,396
| New | +$289K |
|
880
Gogo Inc
GOGO
$1.38B
| $287K | ﹤0.01% |
+29,818
| New | +$287K |
|
|
RWT
881
Redwood Trust
RWT
$802M
| $286K | ﹤0.01% |
+32,623
| New | +$286K |
|
882
Icahn Enterprises
IEP
$4.79B
| $284K | ﹤0.01% |
+5,623
| New | +$284K |
|
883
ALPS O'Shares Global Internet Giants ETF
OGIG
$164M
| $283K | ﹤0.01% |
+5,221
| New | +$283K |
|
884
Akebia Therapeutics
AKBA
$793M
| $282K | ﹤0.01% |
100,822
+3,373
| +3% | +$9.43K |
|
885
NatWest
NWG
$58B
| $282K | ﹤0.01% |
58,136
+40,256
| +225% | +$195K |
|
886
News Corp Class B
NWS
$18.2B
| $282K | ﹤0.01% |
+15,902
| New | +$282K |
|
887
ProShares UltraShort Bloomberg Crude Oil
SCO
$125M
| $282K | ﹤0.01% |
1,213
+504
| +71% | +$117K |
|
888
Arlo Technologies
ARLO
$1.81B
| $281K | ﹤0.01% |
36,113
+22,401
| +163% | +$174K |
|
889
WisdomTree Japan Hedged Equity Fund
DXJ
$3.84B
| $280K | ﹤0.01% |
5,162
-35,298
| -87% | -$1.91M |
|
|
WIFI
890
DELISTED
Boingo Wireless, Inc.
WIFI
| $280K | ﹤0.01% |
22,016
+1,839
| +9% | +$23.4K |
|
891
Progress Software
PRGS
$1.85B
| $279K | ﹤0.01% |
6,194
+5,046
| +440% | +$227K |
|
892
Prospect Capital
PSEC
$1.29B
| $277K | ﹤0.01% |
51,208
-19,438
| -28% | -$105K |
|
893
Rithm Capital
RITM
$6.65B
| $276K | ﹤0.01% |
27,781
-27,406
| -50% | -$272K |
|
894
iShares Global Clean Energy ETF
ICLN
$1.59B
| $275K | ﹤0.01% |
9,744
-12,066
| -55% | -$341K |
|
|
ARNA
895
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $275K | ﹤0.01% |
3,583
+1,751
| +96% | +$134K |
|
896
Customers Bancorp
CUBI
$2.33B
| $274K | ﹤0.01% |
15,075
+6,815
| +83% | +$124K |
|
897
Dell
DELL
$84.3B
| $274K | ﹤0.01% |
+7,397
| New | +$274K |
|
898
Comstock Resources
CRK
$4.69B
| $273K | ﹤0.01% |
62,676
-13,211
| -17% | -$57.5K |
|
899
Seres Therapeutics
MCRB
$154M
| $272K | ﹤0.01% |
556
-1,285
| -70% | -$629K |
|
900
Titan Machinery
TITN
$466M
| $272K | ﹤0.01% |
13,941
+10,687
| +328% | +$209K |
|