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 | +$278M | |
| 2 | +$84.4M | |
| 3 | +$76.9M | |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 | +$497M | |
| 2 | +$73.7M | |
| 3 | +$49M | |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
201
Oxford Industries
OXM
$563M
| $2.17M | ﹤0.01% |
36,922
+36,174
|
|
||
202
Deere & Co
DE
$128B
| $2.14M | ﹤0.01% |
4,567
-401
|
|
||
203
HSBC
HSBC
$245B
| $2.14M | ﹤0.01% |
+37,320
|
|
||
204
American Electric Power
AEP
$64B
| $2.12M | ﹤0.01% |
+19,392
|
|
||
205
Gogo Inc
GOGO
$1.17B
| $2.11M | ﹤0.01% |
245,149
-13,984
|
|
||
206
Phillips 66
PSX
$55.4B
| $2.11M | ﹤0.01% |
17,120
+5,721
|
|
||
207
Stanley Black & Decker
SWK
$11B
| $2.06M | ﹤0.01% |
26,750
+19,500
|
|
||
|
SWTX
208
DELISTED
SpringWorks Therapeutics
SWTX
| $2.05M | ﹤0.01% |
46,435
+38,020
|
|
||
|
GTM
209
ZoomInfo Technologies
GTM
$3.57B
| $2.05M | ﹤0.01% |
204,622
+81,124
|
|
||
210
SharkNinja
SN
$12.5B
| $2M | ﹤0.01% |
24,037
+831
|
|
||
211
US Global Jets ETF
JETS
$761M
| $2M | ﹤0.01% |
96,265
+93,940
|
|
||
212
CoStar Group
CSGP
$29.8B
| $2M | ﹤0.01% |
+25,214
|
|
||
213
Macy's
M
$5.6B
| $1.99M | ﹤0.01% |
158,286
-130,809
|
|
||
214
Philip Morris
PM
$230B
| $1.99M | ﹤0.01% |
+12,508
|
|
||
215
Vale
VALE
$52.6B
| $1.97M | ﹤0.01% |
196,978
-1,081,062
|
|
||
216
Prudential Financial
PRU
$36.9B
| $1.96M | ﹤0.01% |
+17,582
|
|
||
217
Ionis Pharmaceuticals
IONS
$12B
| $1.95M | ﹤0.01% |
+64,581
|
|
||
218
Intuitive Machines
LUNR
$1.27B
| $1.94M | ﹤0.01% |
260,354
+235,960
|
|
||
219
GE Vernova
GEV
$153B
| $1.93M | ﹤0.01% |
6,324
+2,914
|
|
||
220
BWX Technologies
BWXT
$18.2B
| $1.93M | ﹤0.01% |
19,523
+5,793
|
|
||
221
FedEx
FDX
$60.9B
| $1.92M | ﹤0.01% |
7,868
-5,612
|
|
||
222
Take-Two Interactive
TTWO
$46.7B
| $1.92M | ﹤0.01% |
+9,259
|
|
||
223
LyondellBasell Industries
LYB
$14.3B
| $1.91M | ﹤0.01% |
27,201
+25,940
|
|
||
224
Cintas
CTAS
$74.6B
| $1.91M | ﹤0.01% |
+9,275
|
|
||
225
ODDITY Tech
ODD
$2.45B
| $1.91M | ﹤0.01% |
+44,058
|
|