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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
ConocoPhillips
COP
$124B
| $6.25M | 0.02% |
93,704
+81,731
| +683% | +$5.45M |
|
27
Lumen
LUMN
$4.92B
| $5.86M | 0.02% |
+488,637
| New | +$5.86M |
|
28
PepsiCo
PEP
$206B
| $5.63M | 0.02% |
45,906
+20,868
| +83% | +$2.56M |
|
29
DuPont de Nemours
DD
$32.2B
| $5.6M | 0.02% |
105,020
+2,433
| +2% | +$130K |
|
30
iShares MSCI Japan ETF
EWJ
$15.3B
| $5.55M | 0.02% |
+101,341
| New | +$5.55M |
|
31
Bristol-Myers Squibb
BMY
$96.5B
| $5.44M | 0.02% |
114,093
+9,772
| +9% | +$466K |
|
32
JD.com
JD
$44.8B
| $5.41M | 0.02% |
179,451
+2,398
| +1% | +$72.3K |
|
33
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.32B
| $5.18M | 0.01% |
180,360
+83,588
| +86% | +$2.4M |
|
34
Colgate-Palmolive
CL
$67.9B
| $5.08M | 0.01% |
74,180
+31,331
| +73% | +$2.15M |
|
35
Texas Instruments
TXN
$184B
| $5.05M | 0.01% |
+47,592
| New | +$5.05M |
|
|
RDS.B
36
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $4.96M | 0.01% |
77,556
+68,876
| +794% | +$4.4M |
|
|
ONCE
37
DELISTED
Spark Therapeutics, Inc. Common Stock
ONCE
| $4.93M | 0.01% |
43,259
+26,327
| +155% | +$3M |
|
38
MongoDB
MDB
$25.9B
| $4.7M | 0.01% |
31,935
+28,995
| +986% | +$4.26M |
|
39
Constellation Brands
STZ
$26.7B
| $4.64M | 0.01% |
+26,480
| New | +$4.64M |
|
40
American Tower
AMT
$95.5B
| $4.6M | 0.01% |
+23,356
| New | +$4.6M |
|
41
Philip Morris
PM
$260B
| $4.6M | 0.01% |
51,986
+51,686
| +17,229% | +$4.57M |
|
|
APC
42
DELISTED
Anadarko Petroleum
APC
| $4.51M | 0.01% |
+99,243
| New | +$4.51M |
|
43
iShares MSCI EAFE ETF
EFA
$65.3B
| $4.41M | 0.01% |
67,982
+63,854
| +1,547% | +$4.14M |
|
44
SAP
SAP
$310B
| $4.39M | 0.01% |
38,058
+36,277
| +2,037% | +$4.19M |
|
|
NBIS
45
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.7B
| $4.34M | 0.01% |
126,458
+110,862
| +711% | +$3.81M |
|
46
Citigroup
C
$174B
| $4.32M | 0.01% |
69,480
-19,361
| -22% | -$1.2M |
|
47
Southern Company
SO
$102B
| $4.19M | 0.01% |
+81,172
| New | +$4.19M |
|
48
Nutanix
NTNX
$18B
| $4.17M | 0.01% |
110,476
+7,063
| +7% | +$267K |
|
49
PG&E
PCG
$33.7B
| $4.08M | 0.01% |
229,224
+228,224
| +22,822% | +$4.06M |
|
50
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.92B
| $4.02M | 0.01% |
130,821
-265,135
| -67% | -$8.15M |
|