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 | |
|---|---|---|---|---|---|---|
|
SEA
1001
DELISTED
Invesco Shipping ETF
SEA
| $67K | ﹤0.01% |
+7,606
| New | +$67K |
|
1002
iShare MSCI Eurozone ETF
EZU
$7.98B
| $66K | ﹤0.01% |
1,721
-400
| -19% | -$15.3K |
|
1003
Hyster-Yale Materials Handling
HY
$655M
| $66K | ﹤0.01% |
+1,206
| New | +$66K |
|
1004
Tower Semiconductor
TSEM
$7.38B
| $66K | ﹤0.01% |
3,436
-16,595
| -83% | -$319K |
|
1005
Gran Tierra Energy
GTE
$139M
| $65K | ﹤0.01% |
5,277
+2,127
| +68% | +$26.2K |
|
1006
Hormel Foods
HRL
$14B
| $65K | ﹤0.01% |
+1,500
| New | +$65K |
|
1007
Douglas Dynamics
PLOW
$765M
| $65K | ﹤0.01% |
+1,472
| New | +$65K |
|
1008
RPC Inc
RES
$1.03B
| $65K | ﹤0.01% |
11,673
+10,921
| +1,452% | +$60.8K |
|
|
VG
1009
DELISTED
Vonage Holdings Corporation
VG
| $65K | ﹤0.01% |
+5,799
| New | +$65K |
|
1010
Direxion Daily Technology Bear 3x Shares
TECS
$51.6M
| $64K | ﹤0.01% |
6
-1
| -14% | -$10.7K |
|
1011
Energy Fuels
UUUU
$2.89B
| $64K | ﹤0.01% |
+33,491
| New | +$64K |
|
|
EVA
1012
DELISTED
Enviva Inc.
EVA
| $64K | ﹤0.01% |
2,018
+500
| +33% | +$15.9K |
|
|
ATCO
1013
DELISTED
Atlas Corp.
ATCO
| $64K | ﹤0.01% |
+6,094
| New | +$64K |
|
1014
ProShares UltraShort FTSE Europe
EPV
$15.7M
| $63K | ﹤0.01% |
406
-200
| -33% | -$31K |
|
1015
IAMGOLD
IAG
$6.35B
| $63K | ﹤0.01% |
18,550
-83,896
| -82% | -$285K |
|
|
ATSG
1016
DELISTED
Air Transport Services Group, Inc.
ATSG
| $63K | ﹤0.01% |
+3,020
| New | +$63K |
|
1017
Element Solutions
ESI
$6.37B
| $62K | ﹤0.01% |
6,165
-68,178
| -92% | -$686K |
|
1018
Ingredion
INGR
$8.14B
| $62K | ﹤0.01% |
763
-727
| -49% | -$59.1K |
|
1019
Openlane
KAR
$3.15B
| $62K | ﹤0.01% |
+2,542
| New | +$62K |
|
1020
Kennametal
KMT
$1.6B
| $62K | ﹤0.01% |
2,036
-2,864
| -58% | -$87.2K |
|
1021
McEwen Inc.
MUX
$747M
| $62K | ﹤0.01% |
4,020
+3,343
| +494% | +$51.6K |
|
1022
Amicus Therapeutics
FOLD
$2.47B
| $61K | ﹤0.01% |
7,704
-21,785
| -74% | -$172K |
|
1023
Fortuna Silver Mines
FSM
$2.59B
| $61K | ﹤0.01% |
20,018
-31,615
| -61% | -$96.3K |
|
1024
Gates Industrial
GTES
$6.71B
| $61K | ﹤0.01% |
6,152
+524
| +9% | +$5.2K |
|
1025
iShares US Oil & Gas Exploration & Production ETF
IEO
$474M
| $61K | ﹤0.01% |
1,204
+1,190
| +8,500% | +$60.3K |
|