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 |
Apple
AAPL
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
iShares 3-7 Year Treasury Bond ETF
IEI
$16.8B
| $2.22M | ﹤0.01% |
17,642
+2,907
| +20% | +$365K |
|
127
American Tower
AMT
$91.9B
| $2.17M | ﹤0.01% |
9,456
-13,793
| -59% | -$3.17M |
|
128
iShares MSCI ACWI ETF
ACWI
$22B
| $2.13M | ﹤0.01% |
26,881
+15,684
| +140% | +$1.24M |
|
129
ProShares Ultra QQQ
QLD
$8.89B
| $2.12M | ﹤0.01% |
+17,360
| New | +$2.12M |
|
130
Fastenal
FAST
$56.8B
| $2.11M | ﹤0.01% |
57,098
+17,823
| +45% | +$658K |
|
131
Dell
DELL
$83.9B
| $2.11M | ﹤0.01% |
+40,975
| New | +$2.11M |
|
132
Progressive
PGR
$145B
| $2.1M | ﹤0.01% |
+29,075
| New | +$2.1M |
|
|
ETFC
133
DELISTED
E*Trade Financial Corporation
ETFC
| $2.1M | ﹤0.01% |
+46,228
| New | +$2.1M |
|
134
Emerson Electric
EMR
$72.9B
| $2.1M | ﹤0.01% |
+27,480
| New | +$2.1M |
|
135
Centene
CNC
$14.8B
| $2.09M | ﹤0.01% |
+33,214
| New | +$2.09M |
|
136
Pinterest
PINS
$25.2B
| $2.08M | ﹤0.01% |
111,493
+110,257
| +8,920% | +$2.05M |
|
137
Canadian Solar
CSIQ
$663M
| $2.07M | ﹤0.01% |
93,667
+25,638
| +38% | +$567K |
|
138
Kohl's
KSS
$1.78B
| $2.07M | ﹤0.01% |
40,584
+16,161
| +66% | +$823K |
|
|
SGI
139
Somnigroup International Inc.
SGI
$17.8B
| $2.07M | ﹤0.01% |
23,734
+11,528
| +94% | +$1M |
|
140
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$264M
| $2.06M | ﹤0.01% |
+136,358
| New | +$2.06M |
|
141
HSBC
HSBC
$224B
| $2.06M | ﹤0.01% |
+52,705
| New | +$2.06M |
|
142
PPG Industries
PPG
$24.6B
| $2.05M | ﹤0.01% |
+15,334
| New | +$2.05M |
|
|
UN
143
DELISTED
Unilever NV New York Registry Shares
UN
| $2.02M | ﹤0.01% |
35,129
+15,073
| +75% | +$866K |
|
144
RH
RH
$4.14B
| $2.02M | ﹤0.01% |
9,452
+4,926
| +109% | +$1.05M |
|
145
Teledyne Technologies
TDY
$25.5B
| $2.01M | ﹤0.01% |
5,790
+2,998
| +107% | +$1.04M |
|
146
Adobe
ADBE
$148B
| $1.96M | ﹤0.01% |
5,935
-27,182
| -82% | -$8.96M |
|
147
Ferrari
RACE
$88.2B
| $1.94M | ﹤0.01% |
11,737
+437
| +4% | +$72.3K |
|
148
Eventbrite
EB
$262M
| $1.92M | ﹤0.01% |
+95,117
| New | +$1.92M |
|
149
GE Aerospace
GE
$293B
| $1.9M | ﹤0.01% |
170,678
-235,827
| -58% | -$2.63M |
|
|
EPAY
150
DELISTED
Bottomline Technologies Inc
EPAY
| $1.9M | ﹤0.01% |
35,392
+18,806
| +113% | +$1.01M |
|