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 |
NVIDIA
NVDA
|
$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
$18M |
| 4 |
Netflix
NFLX
|
$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
$41.3M |
| 3 |
Walt Disney
DIS
|
$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
APC
26
DELISTED
Anadarko Petroleum
APC
| $6.4M | 0.02% |
90,724
-8,519
| -9% | -$601K |
|
27
Delta Air Lines
DAL
$40B
| $6.3M | 0.02% |
111,008
+108,145
| +3,777% | +$6.14M |
|
28
SPDR S&P Metals & Mining ETF
XME
$2.28B
| $6.14M | 0.02% |
216,471
+157,116
| +265% | +$4.46M |
|
29
3M
MMM
$81B
| $6.12M | 0.02% |
+35,322
| New | +$6.12M |
|
30
General Mills
GIS
$26.6B
| $6M | 0.02% |
114,158
+59,365
| +108% | +$3.12M |
|
31
Baidu
BIDU
$33.1B
| $5.82M | 0.02% |
49,590
-57,084
| -54% | -$6.7M |
|
32
Dominion Energy
D
$50.3B
| $5.79M | 0.02% |
+74,882
| New | +$5.79M |
|
|
ALXN
33
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $5.55M | 0.02% |
+42,409
| New | +$5.55M |
|
|
CTXS
34
DELISTED
Citrix Systems Inc
CTXS
| $5.52M | 0.02% |
56,246
+17,718
| +46% | +$1.74M |
|
35
Royal Caribbean
RCL
$96.4B
| $5.13M | 0.01% |
42,312
+27,481
| +185% | +$3.33M |
|
|
36
Walt Disney
DIS
$211B
| $4.98M | 0.01% |
35,697
-192,774
| -84% | -$26.9M |
|
37
AbbVie
ABBV
$374B
| $4.67M | 0.01% |
+64,174
| New | +$4.67M |
|
38
Occidental Petroleum
OXY
$45.6B
| $4.65M | 0.01% |
92,532
+85,163
| +1,156% | +$4.28M |
|
39
Shopify
SHOP
$182B
| $4.56M | 0.01% |
15,194
+12,466
| +457% | +$3.74M |
|
40
Palo Alto Networks
PANW
$128B
| $4.39M | 0.01% |
+21,525
| New | +$4.39M |
|
41
SAP
SAP
$316B
| $4.2M | 0.01% |
30,699
-7,359
| -19% | -$1.01M |
|
42
Merck
MRK
$210B
| $4.19M | 0.01% |
49,919
-86,411
| -63% | -$7.24M |
|
43
Amgen
AMGN
$153B
| $4.11M | 0.01% |
+22,283
| New | +$4.11M |
|
44
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$264M
| $4.02M | 0.01% |
154,481
+27,809
| +22% | +$724K |
|
|
AABA
45
DELISTED
Altaba Inc. Common Stock
AABA
| $3.95M | 0.01% |
+56,990
| New | +$3.95M |
|
46
iShares 7-10 Year Treasury Bond ETF
IEF
$35.6B
| $3.91M | 0.01% |
35,582
+4,893
| +16% | +$538K |
|
47
Boeing
BA
$176B
| $3.83M | 0.01% |
+10,515
| New | +$3.83M |
|
48
Alibaba
BABA
$325B
| $3.75M | 0.01% |
+22,131
| New | +$3.75M |
|
49
Align Technology
ALGN
$9.59B
| $3.74M | 0.01% |
+13,679
| New | +$3.74M |
|
50
Western Digital
WDC
$29.8B
| $3.73M | 0.01% |
78,421
+43,452
| +124% | +$2.07M |
|