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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MFA
1701
MFA Financial
MFA
$1.04B
| $70K | ﹤0.01% |
3,866
+3,853
| +29,638% | +$69.8K |
|
1702
Merus
MRUS
$5.26B
| $70K | ﹤0.01% |
+2,215
| New | +$70K |
|
1703
Interface
TILE
$1.66B
| $70K | ﹤0.01% |
4,400
-18,137
| -80% | -$289K |
|
1704
Tetra Tech
TTEK
$9.5B
| $70K | ﹤0.01% |
2,085
+2,020
| +3,108% | +$67.8K |
|
1705
WisdomTree
WT
$2.11B
| $70K | ﹤0.01% |
11,531
-17,740
| -61% | -$108K |
|
|
TUEM
1706
DELISTED
Tuesday Morning Corp
TUEM
| $70K | ﹤0.01% |
1,025
+47
| +5% | +$3.21K |
|
|
ESSC
1707
DELISTED
East Stone Acquisition Corporation Ordinary Shares
ESSC
| $70K | ﹤0.01% |
+5,980
| New | +$70K |
|
|
WMC
1708
DELISTED
Western Asset Mortgage Capital Corporation
WMC
| $70K | ﹤0.01% |
3,326
+1,898
| +133% | +$39.9K |
|
|
REV
1709
DELISTED
Revlon, Inc.
REV
| $70K | ﹤0.01% |
+6,247
| New | +$70K |
|
1710
Applied Optoelectronics
AAOI
$1.69B
| $69K | ﹤0.01% |
13,442
+1,216
| +10% | +$6.24K |
|
|
MOGO
1711
Mogo
MOGO
$45.6M
| $69K | ﹤0.01% |
+6,789
| New | +$69K |
|
1712
VirnetX
VHC
$74.7M
| $69K | ﹤0.01% |
1,330
+466
| +54% | +$24.2K |
|
1713
Wipro
WIT
$29B
| $69K | ﹤0.01% |
14,250
-43,294
| -75% | -$210K |
|
1714
DXP Enterprises
DXPE
$1.85B
| $68K | ﹤0.01% |
2,651
+258
| +11% | +$6.62K |
|
1715
Flotek Industries
FTK
$341M
| $68K | ﹤0.01% |
10,123
+8,801
| +666% | +$59.1K |
|
1716
Openlane
KAR
$3.07B
| $68K | ﹤0.01% |
4,390
-51,426
| -92% | -$797K |
|
|
NYC
1717
American Strategic Investment Co
NYC
$24.9M
| $68K | ﹤0.01% |
+813
| New | +$68K |
|
1718
iShares MSCI EAFE Small-Cap ETF
SCZ
$10.9B
| $68K | ﹤0.01% |
936
+831
| +791% | +$60.4K |
|
1719
iShares MSCI USA Size Factor ETF
SIZE
$369M
| $68K | ﹤0.01% |
+500
| New | +$68K |
|
1720
Verisk Analytics
VRSK
$36.6B
| $68K | ﹤0.01% |
299
-6,412
| -96% | -$1.46M |
|
1721
Zumiez
ZUMZ
$347M
| $68K | ﹤0.01% |
+1,428
| New | +$68K |
|
1722
Tronox
TROX
$767M
| $67K | ﹤0.01% |
2,797
-5,824
| -68% | -$140K |
|
1723
Urban Edge Properties
UE
$2.66B
| $67K | ﹤0.01% |
3,566
-4,001
| -53% | -$75.2K |
|
1724
iShares MSCI All Country Asia ex Japan ETF
AAXJ
$2.99B
| $67K | ﹤0.01% |
+814
| New | +$67K |
|
1725
Crocs
CROX
$4.23B
| $67K | ﹤0.01% |
525
-9,589
| -95% | -$1.22M |
|