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 | +$237M | |
| 2 | +$103M | |
| 3 | +$93.9M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.5M |
| 5 |
Pinduoduo
PDD
|
+$61.3M |
Top Sells
| 1 | +$129M | |
| 2 | +$108M | |
| 3 | +$89.1M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$79.3M |
| 5 |
Micron Technology
MU
|
+$64.3M |
Sector Composition
| 1 | Technology | 34.04% |
| 2 | Consumer Discretionary | 13.08% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.02% |
| 5 | Industrials | 3.96% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
251
Enovix
ENVX
$1.73B
| $2.47M | ﹤0.01% |
248,028
+38,350
|
|
||
252
Fastenal
FAST
$47B
| $2.42M | ﹤0.01% |
49,375
-2,806
|
|
||
253
Vail Resorts
MTN
$5.39B
| $2.42M | ﹤0.01% |
16,165
+9,013
|
|
||
254
Simon Property Group
SPG
$60B
| $2.38M | ﹤0.01% |
12,712
+11,033
|
|
||
255
Genius Sports
GENI
$2.4B
| $2.37M | ﹤0.01% |
191,240
+63,802
|
|
||
256
Bitdeer Technologies
BTDR
$2.39B
| $2.36M | ﹤0.01% |
+137,893
|
|
||
257
Colgate-Palmolive
CL
$63.6B
| $2.35M | ﹤0.01% |
29,398
+24,266
|
|
||
258
Ares Management
ARES
$32.9B
| $2.35M | ﹤0.01% |
+14,672
|
|
||
259
Amphenol
APH
$166B
| $2.34M | ﹤0.01% |
18,902
+14,401
|
|
||
260
Mercury Insurance
MCY
$4.83B
| $2.32M | ﹤0.01% |
+27,402
|
|
||
261
JetBlue
JBLU
$1.59B
| $2.31M | ﹤0.01% |
469,702
+112,690
|
|
||
262
MSCI
MSCI
$42.9B
| $2.31M | ﹤0.01% |
+4,069
|
|
||
263
Global E Online
GLBE
$6.14B
| $2.31M | ﹤0.01% |
64,485
+28,133
|
|
||
264
Nice
NICE
$8.36B
| $2.29M | ﹤0.01% |
15,825
+11,106
|
|
||
265
United States Natural Gas Fund
UNG
$677M
| $2.28M | ﹤0.01% |
174,524
+136,163
|
|
||
266
Unum
UNM
$12.9B
| $2.28M | ﹤0.01% |
29,325
+25,863
|
|
||
267
CVR Partners
UAN
$1.03B
| $2.27M | ﹤0.01% |
+25,154
|
|
||
268
Cytokinetics
CYTK
$7.95B
| $2.25M | ﹤0.01% |
+41,004
|
|
||
269
TripAdvisor
TRIP
$1.8B
| $2.25M | ﹤0.01% |
138,597
+110,026
|
|
||
270
First Horizon
FHN
$10.7B
| $2.25M | ﹤0.01% |
99,562
+29,100
|
|
||
271
B2Gold
BTG
$5.52B
| $2.22M | ﹤0.01% |
448,944
+234,702
|
|
||
272
AeroVironment
AVAV
$15.4B
| $2.21M | ﹤0.01% |
7,010
+5,488
|
|
||
273
Sonos
SONO
$2.04B
| $2.2M | ﹤0.01% |
139,519
+104,802
|
|
||
274
Scotiabank
BNS
$83.9B
| $2.19M | ﹤0.01% |
+33,924
|
|
||
275
SentinelOne
S
$5.6B
| $2.18M | ﹤0.01% |
123,899
+83,790
|
|