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 |
NVIDIA
NVDA
|
$114M |
| 2 |
Citigroup
C
|
$77M |
| 3 |
Broadcom
AVGO
|
$53M |
| 4 |
Pinduoduo
PDD
|
$49.7M |
| 5 |
Intel
INTC
|
$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
$92.5M |
| 2 |
Pfizer
PFE
|
$67.5M |
| 3 |
Boeing
BA
|
$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$44.9M |
| 5 |
PayPal
PYPL
|
$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LSXMK
201
DELISTED
Liberty Media Corporation Series C Liberty SiriusXM Common Stock
LSXMK
| $2.94M | ﹤0.01% |
+132,663
| New | +$2.94M |
|
202
Direxion Daily TSLA Bull 2X Shares
TSLL
$6.33B
| $2.94M | ﹤0.01% |
+319,354
| New | +$2.94M |
|
203
Under Armour
UAA
$2.2B
| $2.91M | ﹤0.01% |
435,789
+27,135
| +7% | +$181K |
|
204
iShares Select Dividend ETF
DVY
$20.8B
| $2.89M | ﹤0.01% |
+23,924
| New | +$2.89M |
|
205
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.43B
| $2.89M | ﹤0.01% |
127,585
+96,593
| +312% | +$2.19M |
|
206
Linde
LIN
$220B
| $2.88M | ﹤0.01% |
+6,564
| New | +$2.88M |
|
207
Cogent Communications
CCOI
$1.81B
| $2.87M | ﹤0.01% |
+50,794
| New | +$2.87M |
|
208
BioNTech
BNTX
$27B
| $2.86M | ﹤0.01% |
35,636
+29,971
| +529% | +$2.41M |
|
209
California Resources
CRC
$4.1B
| $2.85M | ﹤0.01% |
53,470
+46,895
| +713% | +$2.5M |
|
210
MakeMyTrip
MMYT
$9.56B
| $2.84M | ﹤0.01% |
33,752
+7,914
| +31% | +$665K |
|
211
Align Technology
ALGN
$10.1B
| $2.83M | ﹤0.01% |
+11,722
| New | +$2.83M |
|
212
Clorox
CLX
$15.5B
| $2.82M | ﹤0.01% |
+20,688
| New | +$2.82M |
|
213
Hilton Worldwide
HLT
$64B
| $2.82M | ﹤0.01% |
12,904
-42,952
| -77% | -$9.37M |
|
214
Citizens Financial Group
CFG
$22.3B
| $2.79M | ﹤0.01% |
77,556
-48,368
| -38% | -$1.74M |
|
|
SILV
215
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $2.78M | ﹤0.01% |
+340,878
| New | +$2.78M |
|
216
Verizon
VZ
$187B
| $2.78M | ﹤0.01% |
67,317
-37,274
| -36% | -$1.54M |
|
217
Spirit AeroSystems
SPR
$4.8B
| $2.76M | ﹤0.01% |
83,981
+8,964
| +12% | +$295K |
|
218
Rivian
RIVN
$17.2B
| $2.7M | ﹤0.01% |
+200,846
| New | +$2.7M |
|
219
Apellis Pharmaceuticals
APLS
$3.55B
| $2.69M | ﹤0.01% |
+70,072
| New | +$2.69M |
|
220
Equity Residential
EQR
$25.5B
| $2.67M | ﹤0.01% |
38,499
+20,629
| +115% | +$1.43M |
|
221
Five Below
FIVE
$8.46B
| $2.66M | ﹤0.01% |
+24,434
| New | +$2.66M |
|
222
Blackrock
BLK
$170B
| $2.65M | ﹤0.01% |
+3,366
| New | +$2.65M |
|
223
TG Therapeutics
TGTX
$5.11B
| $2.63M | ﹤0.01% |
148,108
-41,741
| -22% | -$742K |
|
224
Cenovus Energy
CVE
$28.7B
| $2.59M | ﹤0.01% |
+131,489
| New | +$2.59M |
|
225
Ciena
CIEN
$16.5B
| $2.58M | ﹤0.01% |
53,635
+33,975
| +173% | +$1.64M |
|