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 | |
|---|---|---|---|---|---|---|
326
American International
AIG
$43.6B
| $1.59M | ﹤0.01% |
21,687
+11,267
| +108% | +$825K |
|
327
Altice USA
ATUS
$1.05B
| $1.59M | ﹤0.01% |
644,648
+432,337
| +204% | +$1.06M |
|
328
LyondellBasell Industries
LYB
$17.6B
| $1.58M | ﹤0.01% |
+16,519
| New | +$1.58M |
|
329
PayPal
PYPL
$65.3B
| $1.57M | ﹤0.01% |
+20,162
| New | +$1.57M |
|
330
Cigna
CI
$80.3B
| $1.57M | ﹤0.01% |
4,527
-8,332
| -65% | -$2.89M |
|
331
Under Armour
UAA
$2.19B
| $1.56M | ﹤0.01% |
175,482
-260,307
| -60% | -$2.32M |
|
332
iShares MSCI Emerging Markets ETF
EEM
$19.4B
| $1.56M | ﹤0.01% |
+34,045
| New | +$1.56M |
|
333
Public Service Enterprise Group
PEG
$40B
| $1.56M | ﹤0.01% |
+17,481
| New | +$1.56M |
|
334
Capri Holdings
CPRI
$2.44B
| $1.56M | ﹤0.01% |
36,666
+32,742
| +834% | +$1.39M |
|
335
Roper Technologies
ROP
$56.3B
| $1.54M | ﹤0.01% |
+2,767
| New | +$1.54M |
|
336
Universal Display
OLED
$6.91B
| $1.53M | ﹤0.01% |
7,304
+224
| +3% | +$47K |
|
337
Kanzhun
BZ
$11.1B
| $1.53M | ﹤0.01% |
+88,210
| New | +$1.53M |
|
338
Verisk Analytics
VRSK
$38.1B
| $1.53M | ﹤0.01% |
5,708
+5,479
| +2,393% | +$1.47M |
|
339
InMode
INMD
$966M
| $1.53M | ﹤0.01% |
90,079
-20,757
| -19% | -$352K |
|
340
Emcor
EME
$27.8B
| $1.52M | ﹤0.01% |
+3,537
| New | +$1.52M |
|
341
SPDR Portfolio S&P 500 Growth ETF
SPYG
$41B
| $1.52M | ﹤0.01% |
18,360
-24,548
| -57% | -$2.03M |
|
342
Novo Nordisk
NVO
$241B
| $1.51M | ﹤0.01% |
12,717
-104,650
| -89% | -$12.5M |
|
|
EXE
343
Expand Energy Corporation Common Stock
EXE
$22.5B
| $1.5M | ﹤0.01% |
+18,233
| New | +$1.5M |
|
344
Acadia Healthcare
ACHC
$2.08B
| $1.5M | ﹤0.01% |
23,607
-3,805
| -14% | -$241K |
|
345
Blackstone Mortgage Trust
BXMT
$3.42B
| $1.48M | ﹤0.01% |
78,018
+73,845
| +1,770% | +$1.4M |
|
|
HES
346
DELISTED
Hess
HES
| $1.47M | ﹤0.01% |
10,834
+7,599
| +235% | +$1.03M |
|
347
TAL Education Group
TAL
$6.32B
| $1.47M | ﹤0.01% |
124,195
+92,562
| +293% | +$1.1M |
|
|
SILV
348
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $1.47M | ﹤0.01% |
158,855
-182,023
| -53% | -$1.68M |
|
349
Post Holdings
POST
$5.77B
| $1.46M | ﹤0.01% |
12,639
+1,815
| +17% | +$210K |
|
350
Iovance Biotherapeutics
IOVA
$861M
| $1.46M | ﹤0.01% |
155,572
+70,850
| +84% | +$665K |
|