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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
201
Post Holdings
POST
$5.64B
| $3.17M | ﹤0.01% |
29,860
+27,153
| +1,003% | +$2.89M |
|
|
FL
202
DELISTED
Foot Locker
FL
| $3.15M | ﹤0.01% |
110,566
-18,438
| -14% | -$525K |
|
203
TransUnion
TRU
$17.5B
| $3.15M | ﹤0.01% |
+39,485
| New | +$3.15M |
|
204
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$239M
| $3.14M | ﹤0.01% |
76,659
+17,189
| +29% | +$705K |
|
205
Keurig Dr Pepper
KDP
$36.8B
| $3.14M | ﹤0.01% |
+102,349
| New | +$3.14M |
|
206
TopBuild
BLD
$11.7B
| $3.12M | ﹤0.01% |
7,089
+3,549
| +100% | +$1.56M |
|
207
Healthcare Realty
HR
$6.36B
| $3.09M | ﹤0.01% |
+218,709
| New | +$3.09M |
|
208
Dave & Buster's
PLAY
$680M
| $3.09M | ﹤0.01% |
49,382
+28,120
| +132% | +$1.76M |
|
209
Agilent Technologies
A
$35.8B
| $3.07M | ﹤0.01% |
+21,083
| New | +$3.07M |
|
210
StoneCo
STNE
$5.19B
| $3.03M | ﹤0.01% |
+182,666
| New | +$3.03M |
|
211
Williams-Sonoma
WSM
$24.1B
| $3.02M | ﹤0.01% |
+19,014
| New | +$3.02M |
|
212
Under Armour
UAA
$2.07B
| $3.02M | ﹤0.01% |
408,654
+243,659
| +148% | +$1.8M |
|
|
NVEI
213
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $3.02M | ﹤0.01% |
95,367
+81,108
| +569% | +$2.56M |
|
214
XPeng
XPEV
$20.6B
| $2.97M | ﹤0.01% |
+387,276
| New | +$2.97M |
|
215
InMode
INMD
$929M
| $2.93M | ﹤0.01% |
135,423
+98,183
| +264% | +$2.12M |
|
216
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$501M
| $2.92M | ﹤0.01% |
87,547
-8,899
| -9% | -$297K |
|
217
KeyCorp
KEY
$20.9B
| $2.9M | ﹤0.01% |
183,425
-44,597
| -20% | -$705K |
|
218
Atlassian
TEAM
$44.3B
| $2.89M | ﹤0.01% |
+14,810
| New | +$2.89M |
|
219
TG Therapeutics
TGTX
$5.14B
| $2.89M | ﹤0.01% |
189,849
-27,872
| -13% | -$424K |
|
220
Burlington
BURL
$16.6B
| $2.88M | ﹤0.01% |
12,394
+10,853
| +704% | +$2.52M |
|
221
S&P Global
SPGI
$155B
| $2.88M | ﹤0.01% |
+6,763
| New | +$2.88M |
|
222
Cipher Mining
CIFR
$4.83B
| $2.84M | ﹤0.01% |
552,391
+399,184
| +261% | +$2.06M |
|
223
Liberty Broadband Class C
LBRDK
$8.67B
| $2.84M | ﹤0.01% |
49,651
+48,123
| +3,149% | +$2.75M |
|
224
GitLab
GTLB
$8.37B
| $2.84M | ﹤0.01% |
48,661
+21,308
| +78% | +$1.24M |
|
225
Symbotic
SYM
$6.35B
| $2.83M | ﹤0.01% |
+62,960
| New | +$2.83M |
|