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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
276
Coterra Energy
CTRA
$18.2B
| $2.16M | ﹤0.01% |
120,905
+23,388
| +24% | +$417K |
|
277
Fifth Third Bancorp
FITB
$30.3B
| $2.15M | ﹤0.01% |
55,601
+100
| +0.2% | +$3.87K |
|
278
Johnson & Johnson
JNJ
$431B
| $2.15M | ﹤0.01% |
12,937
+1,526
| +13% | +$253K |
|
279
Trip.com Group
TCOM
$47.7B
| $2.11M | ﹤0.01% |
59,792
+2,062
| +4% | +$72.9K |
|
280
Invesco Solar ETF
TAN
$759M
| $2.1M | ﹤0.01% |
23,794
+1,523
| +7% | +$134K |
|
281
Under Armour
UAA
$2.22B
| $2.1M | ﹤0.01% |
98,611
+1,100
| +1% | +$23.4K |
|
|
TEN
282
DELISTED
Tenneco Inc. Class A Voting Common Stock
TEN
| $2.1M | ﹤0.01% |
105,522
-5
| -0% | -$99 |
|
|
NKLA
283
DELISTED
Nikola Corporation Common Stock
NKLA
| $2.1M | ﹤0.01% |
4,115
-562
| -12% | -$286K |
|
284
Campbell Soup
CPB
$10.1B
| $2.09M | ﹤0.01% |
45,754
-1,272
| -3% | -$58.1K |
|
285
Digital Turbine
APPS
$466M
| $2.07M | ﹤0.01% |
26,503
-2,679
| -9% | -$210K |
|
286
DXC Technology
DXC
$2.63B
| $2.07M | ﹤0.01% |
51,234
-100
| -0.2% | -$4.04K |
|
287
Hartford Financial Services
HIG
$37.2B
| $2.06M | ﹤0.01% |
32,789
+400
| +1% | +$25.1K |
|
288
Suncor Energy
SU
$48.2B
| $2.05M | ﹤0.01% |
84,009
-2,289
| -3% | -$55.8K |
|
289
Pacific Biosciences
PACB
$375M
| $2.04M | ﹤0.01% |
59,308
-2,107
| -3% | -$72.4K |
|
290
McKesson
MCK
$85.7B
| $2.04M | ﹤0.01% |
10,564
+600
| +6% | +$116K |
|
291
JetBlue
JBLU
$1.85B
| $2.03M | ﹤0.01% |
118,785
-18,444
| -13% | -$316K |
|
292
Vanguard FTSE Europe ETF
VGK
$26.9B
| $2.03M | ﹤0.01% |
29,959
| – | – |
|
293
Halliburton
HAL
$19B
| $2.03M | ﹤0.01% |
85,124
-4,159
| -5% | -$98.9K |
|
294
Tenet Healthcare
THC
$17.3B
| $2.03M | ﹤0.01% |
29,825
| – | – |
|
295
The SPAC and New Issue ETF
SPCX
$9.22M
| $2M | ﹤0.01% |
68,789
-199
| -0.3% | -$5.79K |
|
296
EPR Properties
EPR
$4.02B
| $2M | ﹤0.01% |
37,897
| – | – |
|
297
iShares US Home Construction ETF
ITB
$3.36B
| $2M | ﹤0.01% |
28,395
+300
| +1% | +$21.1K |
|
298
Williams-Sonoma
WSM
$24.5B
| $2M | ﹤0.01% |
24,924
| – | – |
|
299
ArcelorMittal
MT
$25.8B
| $1.98M | ﹤0.01% |
63,395
-100
| -0.2% | -$3.12K |
|
300
XPO
XPO
$15.5B
| $1.98M | ﹤0.01% |
23,522
-18,846
| -44% | -$1.58M |
|