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 | |
|---|---|---|---|---|---|---|
251
CBRE Group
CBRE
$44.7B
| $1.69M | ﹤0.01% |
+12,891
|
|
||
252
Golar LNG
GLNG
$4.05B
| $1.68M | ﹤0.01% |
44,322
-49,575
|
|
||
253
Frontline
FRO
$5.19B
| $1.68M | ﹤0.01% |
112,934
-11,682
|
|
||
254
Akero Therapeutics
AKRO
$4.33B
| $1.65M | ﹤0.01% |
40,853
+17,998
|
|
||
255
Pitney Bowes
PBI
$1.52B
| $1.65M | ﹤0.01% |
+181,818
|
|
||
256
Goodyear
GT
$2.3B
| $1.63M | ﹤0.01% |
176,675
-124,016
|
|
||
257
Knight Transportation
KNX
$7.24B
| $1.62M | ﹤0.01% |
37,327
-9,703
|
|
||
258
Groupon
GRPN
$828M
| $1.59M | ﹤0.01% |
84,988
-8,690
|
|
||
259
BHP
BHP
$141B
| $1.58M | ﹤0.01% |
32,628
+1,491
|
|
||
260
B2Gold
BTG
$5.34B
| $1.58M | ﹤0.01% |
555,671
+418,641
|
|
||
261
Tapestry
TPR
$22.6B
| $1.58M | ﹤0.01% |
22,489
-44,939
|
|
||
262
Patterson-UTI
PTEN
$2.3B
| $1.57M | ﹤0.01% |
191,387
-13,409
|
|
||
263
Crane Co
CR
$11B
| $1.56M | ﹤0.01% |
10,223
+7,185
|
|
||
|
MSTX
264
Defiance Daily Target 2x Long MSTR ETF
MSTX
$362M
| $1.55M | ﹤0.01% |
60,117
-637,229
|
|
||
265
iShares 3-7 Year Treasury Bond ETF
IEI
$16.9B
| $1.53M | ﹤0.01% |
12,958
+1,487
|
|
||
266
UGI
UGI
$7.24B
| $1.52M | ﹤0.01% |
46,042
+17,563
|
|
||
267
Diageo
DEO
$52.2B
| $1.52M | ﹤0.01% |
14,478
+184
|
|
||
268
iShares US Aerospace & Defense ETF
ITA
$11.5B
| $1.52M | ﹤0.01% |
9,903
-21,402
|
|
||
269
Marqeta
MQ
$2B
| $1.51M | ﹤0.01% |
366,745
+305,613
|
|
||
270
MarketAxess Holdings
MKTX
$6.02B
| $1.5M | ﹤0.01% |
6,943
+6,246
|
|
||
271
DocuSign
DOCU
$14.3B
| $1.5M | ﹤0.01% |
+18,425
|
|
||
272
Invesco KBW Bank ETF
KBWB
$5.14B
| $1.5M | ﹤0.01% |
23,837
+18,247
|
|
||
|
MOMO
273
Hello Group
MOMO
$1.08B
| $1.49M | ﹤0.01% |
+236,558
|
|
||
274
Permian Resources
PR
$9.02B
| $1.49M | ﹤0.01% |
+107,615
|
|
||
275
Darling Ingredients
DAR
$5.1B
| $1.48M | ﹤0.01% |
47,270
-3,148
|
|