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 |
Boeing
BA
|
$49.5M |
| 2 |
Pinduoduo
PDD
|
$45.3M |
| 3 |
Microsoft
MSFT
|
$42.5M |
| 4 |
Apple
AAPL
|
$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
$95.4M |
| 2 |
Citigroup
C
|
$57.9M |
| 3 |
Pfizer
PFE
|
$55.9M |
| 4 |
TSMC
TSM
|
$40.4M |
| 5 |
Starbucks
SBUX
|
$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Roku
ROKU
$14B
| $3.74M | ﹤0.01% |
50,046
-120,041
| -71% | -$8.96M |
|
177
Caesars Entertainment
CZR
$5.48B
| $3.71M | ﹤0.01% |
88,979
+25,005
| +39% | +$1.04M |
|
178
Maplebear
CART
$11.9B
| $3.71M | ﹤0.01% |
91,132
+38,481
| +73% | +$1.57M |
|
179
XPO
XPO
$15.4B
| $3.69M | ﹤0.01% |
34,312
+2,989
| +10% | +$321K |
|
180
Truist Financial
TFC
$60B
| $3.68M | ﹤0.01% |
86,033
-42,998
| -33% | -$1.84M |
|
|
PARA
181
DELISTED
Paramount Global Class B
PARA
| $3.66M | ﹤0.01% |
344,892
-591,418
| -63% | -$6.28M |
|
182
Astera Labs
ALAB
$31.8B
| $3.65M | ﹤0.01% |
+69,670
| New | +$3.65M |
|
183
Enphase Energy
ENPH
$5.18B
| $3.64M | ﹤0.01% |
+32,231
| New | +$3.64M |
|
184
PENN Entertainment
PENN
$2.99B
| $3.6M | ﹤0.01% |
191,012
-326,434
| -63% | -$6.16M |
|
185
Take-Two Interactive
TTWO
$44.2B
| $3.58M | ﹤0.01% |
+23,259
| New | +$3.58M |
|
186
Adobe
ADBE
$148B
| $3.53M | ﹤0.01% |
6,816
-935
| -12% | -$484K |
|
187
Cummins
CMI
$55.1B
| $3.52M | ﹤0.01% |
10,874
+6,489
| +148% | +$2.1M |
|
188
Fair Isaac
FICO
$36.8B
| $3.48M | ﹤0.01% |
1,792
+658
| +58% | +$1.28M |
|
189
Alcoa
AA
$8.24B
| $3.48M | ﹤0.01% |
+90,177
| New | +$3.48M |
|
190
Xcel Energy
XEL
$43B
| $3.45M | ﹤0.01% |
52,891
+21,905
| +71% | +$1.43M |
|
191
UiPath
PATH
$6.15B
| $3.44M | ﹤0.01% |
+269,011
| New | +$3.44M |
|
192
ARK Innovation ETF
ARKK
$7.49B
| $3.43M | ﹤0.01% |
72,073
+52,684
| +272% | +$2.5M |
|
193
Jabil
JBL
$22.5B
| $3.36M | ﹤0.01% |
28,023
-967
| -3% | -$116K |
|
194
ProShares UltraPro Short QQQ
SQQQ
$2.32B
| $3.35M | ﹤0.01% |
90,706
-13,336
| -13% | -$493K |
|
195
Edison International
EIX
$21B
| $3.3M | ﹤0.01% |
37,869
+25,249
| +200% | +$2.2M |
|
196
Citizens Financial Group
CFG
$22.3B
| $3.29M | ﹤0.01% |
80,041
+2,485
| +3% | +$102K |
|
197
Air Products & Chemicals
APD
$64.5B
| $3.26M | ﹤0.01% |
10,947
-23,501
| -68% | -$7M |
|
198
BHP
BHP
$138B
| $3.2M | ﹤0.01% |
51,503
+27,737
| +117% | +$1.72M |
|
199
Johnson Controls International
JCI
$69.5B
| $3.15M | ﹤0.01% |
40,626
-15,171
| -27% | -$1.18M |
|
200
CRISPR Therapeutics
CRSP
$4.99B
| $3.14M | ﹤0.01% |
+66,880
| New | +$3.14M |
|