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 |
Alibaba
BABA
|
$48.9M |
| 2 |
Boeing
BA
|
$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
FedEx
FDX
|
$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
$17.5M |
| 4 |
Netflix
NFLX
|
$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
IBM
IBM
$227B
| $1.9M | 0.01% |
13,050
-11,785
| -47% | -$1.71M |
|
102
Target
TGT
$42B
| $1.89M | 0.01% |
+17,684
| New | +$1.89M |
|
103
MSCI
MSCI
$42.7B
| $1.88M | 0.01% |
+8,633
| New | +$1.88M |
|
104
Nutanix
NTNX
$18.2B
| $1.88M | 0.01% |
71,537
-65,568
| -48% | -$1.72M |
|
105
Hilton Grand Vacations
HGV
$4.2B
| $1.88M | 0.01% |
58,680
+24,453
| +71% | +$782K |
|
106
iShares 3-7 Year Treasury Bond ETF
IEI
$16.8B
| $1.87M | 0.01% |
+14,735
| New | +$1.87M |
|
107
General Mills
GIS
$26.6B
| $1.85M | 0.01% |
33,588
-80,570
| -71% | -$4.44M |
|
|
KSU
108
DELISTED
Kansas City Southern
KSU
| $1.84M | 0.01% |
+13,824
| New | +$1.84M |
|
|
PFPT
109
DELISTED
Proofpoint, Inc.
PFPT
| $1.83M | 0.01% |
+14,202
| New | +$1.83M |
|
110
Aramark
ARMK
$10.2B
| $1.82M | 0.01% |
+41,728
| New | +$1.82M |
|
|
SGEN
111
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.82M | 0.01% |
21,275
+14,296
| +205% | +$1.22M |
|
|
LGF.A
112
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $1.81M | 0.01% |
196,083
+131,925
| +206% | +$1.22M |
|
113
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$29.4B
| $1.76M | 0.01% |
13,832
-7,285
| -34% | -$929K |
|
114
LPL Financial
LPLA
$28.5B
| $1.76M | 0.01% |
+21,480
| New | +$1.76M |
|
115
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$449M
| $1.75M | 0.01% |
101,999
+23,020
| +29% | +$395K |
|
116
Ferrari
RACE
$88.2B
| $1.74M | 0.01% |
11,300
-4,507
| -29% | -$694K |
|
117
Okta
OKTA
$15.8B
| $1.74M | ﹤0.01% |
17,645
-8,032
| -31% | -$791K |
|
118
Mettler-Toledo International
MTD
$26.1B
| $1.74M | ﹤0.01% |
2,467
+2,347
| +1,956% | +$1.65M |
|
119
Cencora
COR
$57.2B
| $1.71M | ﹤0.01% |
20,780
-768
| -4% | -$63.2K |
|
120
Gen Digital
GEN
$18.3B
| $1.71M | ﹤0.01% |
72,193
+43,713
| +153% | +$1.03M |
|
|
ZGNX
121
DELISTED
Zogenix, Inc.
ZGNX
| $1.7M | ﹤0.01% |
+42,457
| New | +$1.7M |
|
122
WisdomTree Japan Hedged Equity Fund
DXJ
$3.72B
| $1.68M | ﹤0.01% |
33,357
+12,966
| +64% | +$654K |
|
123
Agilent Technologies
A
$35.5B
| $1.68M | ﹤0.01% |
+21,928
| New | +$1.68M |
|
124
Pricesmart
PSMT
$3.33B
| $1.66M | ﹤0.01% |
23,378
+22,733
| +3,524% | +$1.62M |
|
125
Macy's
M
$4.42B
| $1.65M | ﹤0.01% |
+106,380
| New | +$1.65M |
|