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 | |
|---|---|---|---|---|---|---|
951
Winnebago Industries
WGO
$988M
| $81K | ﹤0.01% |
2,133
-6,198
| -74% | -$235K |
|
952
Direxion Daily FTSE China Bear 3X Shares
YANG
$160M
| $81K | ﹤0.01% |
+74
| New | +$81K |
|
|
AKRX
953
DELISTED
Akorn, Inc.
AKRX
| $81K | ﹤0.01% |
+21,361
| New | +$81K |
|
954
Astec Industries
ASTE
$1.09B
| $80K | ﹤0.01% |
2,578
-217
| -8% | -$6.73K |
|
955
CF Industries
CF
$14B
| $80K | ﹤0.01% |
1,627
-15,748
| -91% | -$774K |
|
956
Microchip Technology
MCHP
$35.1B
| $80K | ﹤0.01% |
1,724
-1,924
| -53% | -$89.3K |
|
957
Viper Energy
VNOM
$6.58B
| $80K | ﹤0.01% |
2,925
+1,103
| +61% | +$30.2K |
|
958
Columbus McKinnon
CMCO
$428M
| $79K | ﹤0.01% |
+2,169
| New | +$79K |
|
959
VOC Energy
VOC
$46.2M
| $79K | ﹤0.01% |
+15,050
| New | +$79K |
|
960
Ligand Pharmaceuticals
LGND
$3.26B
| $78K | ﹤0.01% |
+1,257
| New | +$78K |
|
961
Wave Life Sciences
WVE
$1.14B
| $78K | ﹤0.01% |
3,802
-2,075
| -35% | -$42.6K |
|
962
Cytokinetics
CYTK
$6.38B
| $77K | ﹤0.01% |
+6,795
| New | +$77K |
|
963
Magnite
MGNI
$3.44B
| $77K | ﹤0.01% |
8,875
+2,350
| +36% | +$20.4K |
|
964
Rigel Pharmaceuticals
RIGL
$678M
| $77K | ﹤0.01% |
+4,164
| New | +$77K |
|
965
BlueLinx
BXC
$651M
| $76K | ﹤0.01% |
+2,365
| New | +$76K |
|
966
PG&E
PCG
$34.6B
| $76K | ﹤0.01% |
+7,614
| New | +$76K |
|
|
DCPH
967
DELISTED
Deciphera Pharmaceuticals, Inc. Common Stock
DCPH
| $76K | ﹤0.01% |
+2,264
| New | +$76K |
|
|
FLXN
968
DELISTED
Flexion Therapeutics, Inc.
FLXN
| $76K | ﹤0.01% |
5,569
-4,668
| -46% | -$63.7K |
|
|
TOO
969
DELISTED
Teekay Offshore Partners L.P.
TOO
| $76K | ﹤0.01% |
65,741
-8,110
| -11% | -$9.38K |
|
970
Vera Bradley
VRA
$58.7M
| $75K | ﹤0.01% |
7,485
+2,614
| +54% | +$26.2K |
|
|
HCR
971
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $75K | ﹤0.01% |
43,299
+7,576
| +21% | +$13.1K |
|
|
STI
972
DELISTED
SunTrust Banks, Inc.
STI
| $75K | ﹤0.01% |
+1,092
| New | +$75K |
|
973
The Greenbrier Companies
GBX
$1.46B
| $74K | ﹤0.01% |
2,461
-20,050
| -89% | -$603K |
|
974
Gerdau
GGB
$6.21B
| $74K | ﹤0.01% |
29,778
+575
| +2% | +$1.43K |
|
975
Navios Maritime Partners
NMM
$1.4B
| $74K | ﹤0.01% |
4,218
+2,943
| +231% | +$51.6K |
|