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 |
Amazon
AMZN
|
$102M |
| 2 |
TSMC
TSM
|
$29.6M |
| 3 |
JPMorgan Chase
JPM
|
$21.9M |
| 4 |
Boeing
BA
|
$18.8M |
| 5 |
Target
TGT
|
$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$94.2M |
| 2 |
Tesla
TSLA
|
$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$81.5M |
| 4 |
NVIDIA
NVDA
|
$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
GE Aerospace
GE
$293B
| $4.62M | 0.01% |
741,064
+510,617
| +222% | +$3.18M |
|
77
Duke Energy
DUK
$94.5B
| $4.51M | 0.01% |
+50,929
| New | +$4.51M |
|
78
iShares Core S&P 500 ETF
IVV
$660B
| $4.42M | 0.01% |
13,144
+10,903
| +487% | +$3.66M |
|
79
Bank of New York Mellon
BK
$73.8B
| $4.39M | 0.01% |
+127,697
| New | +$4.39M |
|
80
TripAdvisor
TRIP
$2B
| $4.29M | 0.01% |
219,163
+67,114
| +44% | +$1.31M |
|
81
Spotify
SPOT
$143B
| $4.28M | 0.01% |
17,653
-23,877
| -57% | -$5.79M |
|
82
NIO
NIO
$14.2B
| $4.17M | 0.01% |
196,472
-309,901
| -61% | -$6.58M |
|
83
ProShares Ultra Gold
UGL
$609M
| $4.14M | 0.01% |
60,365
+58,839
| +3,856% | +$4.03M |
|
84
3M
MMM
$81B
| $4.12M | 0.01% |
25,741
+3,509
| +16% | +$562K |
|
85
Vale
VALE
$43.6B
| $4.08M | 0.01% |
+385,773
| New | +$4.08M |
|
86
iShares MSCI Australia ETF
EWA
$1.51B
| $4.06M | 0.01% |
205,830
+138,697
| +207% | +$2.73M |
|
87
Align Technology
ALGN
$9.59B
| $4.04M | 0.01% |
+12,342
| New | +$4.04M |
|
|
ATVI
88
DELISTED
Activision Blizzard Inc.
ATVI
| $4.03M | 0.01% |
49,799
+41,901
| +531% | +$3.39M |
|
89
TJX Companies
TJX
$155B
| $3.97M | 0.01% |
71,252
+71,172
| +88,965% | +$3.96M |
|
90
Marvell Technology
MRVL
$53.7B
| $3.94M | 0.01% |
+99,158
| New | +$3.94M |
|
91
Bilibili
BILI
$9.2B
| $3.8M | 0.01% |
91,353
+26,946
| +42% | +$1.12M |
|
92
Carnival Corp
CCL
$42.5B
| $3.74M | 0.01% |
246,231
+245,531
| +35,076% | +$3.73M |
|
93
VanEck Semiconductor ETF
SMH
$26.6B
| $3.63M | ﹤0.01% |
+20,816
| New | +$3.63M |
|
94
Freeport-McMoran
FCX
$66.3B
| $3.57M | ﹤0.01% |
228,036
+93,169
| +69% | +$1.46M |
|
95
Microchip Technology
MCHP
$34.2B
| $3.51M | ﹤0.01% |
34,204
-3,632
| -10% | -$373K |
|
96
DexCom
DXCM
$30.9B
| $3.51M | ﹤0.01% |
8,503
+3,359
| +65% | +$1.38M |
|
97
Tyson Foods
TSN
$20B
| $3.5M | ﹤0.01% |
58,901
+21,361
| +57% | +$1.27M |
|
98
Ferrari
RACE
$88.2B
| $3.45M | ﹤0.01% |
18,753
+4,751
| +34% | +$875K |
|
99
iShares Core S&P Small-Cap ETF
IJR
$84.4B
| $3.44M | ﹤0.01% |
49,036
+45,405
| +1,250% | +$3.19M |
|
100
ProShares Ultra S&P500
SSO
$7.13B
| $3.42M | ﹤0.01% |
46,562
+35,671
| +328% | +$1.82M |
|