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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1151
United Parks & Resorts
PRKS
$2.76B
| $220K | ﹤0.01% |
3,400
-46,456
| -93% | -$3.01M |
|
|
SIXG
1152
Defiance Connective Technologies ETF
SIXG
$654M
| $220K | ﹤0.01% |
5,284
-7,139
| -57% | -$297K |
|
1153
Schwab U.S Small- Cap ETF
SCHA
$18.9B
| $219K | ﹤0.01% |
+8,568
| New | +$219K |
|
|
CVT
1154
DELISTED
Cvent Holding Corp. Common Stock
CVT
| $219K | ﹤0.01% |
+26,919
| New | +$219K |
|
|
DSL
1155
DoubleLine Income Solutions Fund
DSL
$1.44B
| $217K | ﹤0.01% |
13,514
+1,813
| +15% | +$29.1K |
|
|
MTLS
1156
Materialise
MTLS
$303M
| $217K | ﹤0.01% |
9,132
+6,559
| +255% | +$156K |
|
1157
Penske Automotive Group
PAG
$12B
| $217K | ﹤0.01% |
2,024
+1,523
| +304% | +$163K |
|
|
VRTV
1158
DELISTED
VERITIV CORPORATION
VRTV
| $216K | ﹤0.01% |
+1,764
| New | +$216K |
|
1159
Lightwave Logic
LWLG
$391M
| $214K | ﹤0.01% |
+14,402
| New | +$214K |
|
1160
ProShares UltraShort Bloomberg Crude Oil
SCO
$121M
| $214K | ﹤0.01% |
3,363
+1,651
| +96% | +$105K |
|
1161
Waste Connections
WCN
$45.3B
| $214K | ﹤0.01% |
1,574
+373
| +31% | +$50.7K |
|
1162
Werner Enterprises
WERN
$1.68B
| $214K | ﹤0.01% |
4,500
+4,140
| +1,150% | +$197K |
|
|
IRNT
1163
DELISTED
IronNet, Inc.
IRNT
| $214K | ﹤0.01% |
+51,051
| New | +$214K |
|
|
XENT
1164
DELISTED
Intersect ENT, Inc
XENT
| $214K | ﹤0.01% |
7,862
+564
| +8% | +$15.4K |
|
1165
Joby Aviation
JOBY
$12.2B
| $213K | ﹤0.01% |
+29,184
| New | +$213K |
|
1166
LG Display
LPL
$4.42B
| $213K | ﹤0.01% |
+21,166
| New | +$213K |
|
|
LL
1167
DELISTED
LL Flooring Holdings, Inc.
LL
| $213K | ﹤0.01% |
12,487
-2,027
| -14% | -$34.6K |
|
|
FARO
1168
DELISTED
Faro Technologies
FARO
| $212K | ﹤0.01% |
+3,039
| New | +$212K |
|
1169
Realty Income
O
$55.1B
| $212K | ﹤0.01% |
+2,974
| New | +$212K |
|
1170
Redwire
RDW
$1.24B
| $212K | ﹤0.01% |
+31,527
| New | +$212K |
|
1171
CACI
CACI
$10.8B
| $211K | ﹤0.01% |
784
+295
| +60% | +$79.4K |
|
1172
L3Harris
LHX
$52.5B
| $210K | ﹤0.01% |
+986
| New | +$210K |
|
1173
UFP Industries
UFPI
$5.9B
| $210K | ﹤0.01% |
+2,291
| New | +$210K |
|
|
HOLI
1174
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $210K | ﹤0.01% |
14,961
-23,164
| -61% | -$325K |
|
1175
Allot
ALLT
$436M
| $209K | ﹤0.01% |
17,603
+17,048
| +3,072% | +$202K |
|