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 |
AMC Entertainment Holdings
AMC
|
$84.2M |
| 2 |
NVIDIA
NVDA
|
$35.3M |
| 3 |
AT&T
T
|
$28.5M |
| 4 |
Micron Technology
MU
|
$23.1M |
| 5 |
Baidu
BIDU
|
$22.7M |
Top Sells
| 1 |
Palantir
PLTR
|
$29.3M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$26.2M |
| 3 |
PARA
Paramount Global Class B
PARA
|
$21.7M |
| 4 |
Exxon Mobil
XOM
|
$18M |
| 5 |
Lam Research
LRCX
|
$16.3M |
Sector Composition
| 1 | Technology | 17.69% |
| 2 | Consumer Discretionary | 14.79% |
| 3 | Communication Services | 10.15% |
| 4 | Healthcare | 9.69% |
| 5 | Financials | 9.42% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
United Parks & Resorts
PRKS
$2.99B
| $2.4M | ﹤0.01% |
+48,045
| New | +$2.4M |
|
252
Pultegroup
PHM
$27.2B
| $2.4M | ﹤0.01% |
43,948
+5,461
| +14% | +$298K |
|
253
CRISPR Therapeutics
CRSP
$4.8B
| $2.39M | ﹤0.01% |
14,774
+12,794
| +646% | +$2.07M |
|
254
Cedar Fair
FUN
$2.59B
| $2.39M | ﹤0.01% |
53,329
+16,886
| +46% | +$757K |
|
255
NovoCure
NVCR
$1.34B
| $2.38M | ﹤0.01% |
10,748
+2,488
| +30% | +$552K |
|
256
Advanced Micro Devices
AMD
$263B
| $2.37M | ﹤0.01% |
+25,265
| New | +$2.37M |
|
257
AvalonBay Communities
AVB
$27.4B
| $2.36M | ﹤0.01% |
11,331
+3,470
| +44% | +$724K |
|
258
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.15B
| $2.35M | ﹤0.01% |
6,331
+4,145
| +190% | +$1.54M |
|
259
Berkshire Hathaway Class B
BRK.B
$1.09T
| $2.34M | ﹤0.01% |
8,432
+8,332
| +8,332% | +$2.32M |
|
260
Celanese
CE
$5.08B
| $2.33M | ﹤0.01% |
15,362
-1,784
| -10% | -$270K |
|
261
Public Storage
PSA
$51.3B
| $2.32M | ﹤0.01% |
7,707
+808
| +12% | +$243K |
|
262
Arrowhead Research
ARWR
$3.87B
| $2.31M | ﹤0.01% |
27,896
-2,954
| -10% | -$245K |
|
263
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$803M
| $2.31M | ﹤0.01% |
39,717
+7,913
| +25% | +$460K |
|
264
Pool Corp
POOL
$11.8B
| $2.31M | ﹤0.01% |
+5,028
| New | +$2.31M |
|
265
Uber
UBER
$192B
| $2.3M | ﹤0.01% |
+45,951
| New | +$2.3M |
|
266
JetBlue
JBLU
$1.85B
| $2.3M | ﹤0.01% |
137,229
+28,084
| +26% | +$471K |
|
|
MRO
267
DELISTED
Marathon Oil Corporation
MRO
| $2.3M | ﹤0.01% |
168,616
-115,225
| -41% | -$1.57M |
|
|
MIC
268
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $2.25M | ﹤0.01% |
58,689
+53,078
| +946% | +$2.03M |
|
269
Centene
CNC
$14.1B
| $2.24M | ﹤0.01% |
30,756
-10,156
| -25% | -$741K |
|
270
Digital Turbine
APPS
$460M
| $2.22M | ﹤0.01% |
+29,182
| New | +$2.22M |
|
271
Vanguard Total Stock Market ETF
VTI
$529B
| $2.2M | ﹤0.01% |
9,880
-183
| -2% | -$40.8K |
|
272
Agnico Eagle Mines
AEM
$74.5B
| $2.18M | ﹤0.01% |
36,097
-17,305
| -32% | -$1.05M |
|
273
Church & Dwight Co
CHD
$23.2B
| $2.17M | ﹤0.01% |
25,487
+24,845
| +3,870% | +$2.12M |
|
274
Tower Semiconductor
TSEM
$7.04B
| $2.16M | ﹤0.01% |
73,549
+21,080
| +40% | +$620K |
|
275
Canadian Solar
CSIQ
$650M
| $2.16M | ﹤0.01% |
48,247
+20,154
| +72% | +$904K |
|