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 | |
|---|---|---|---|---|---|---|
1676
Retractable Technologies
RVP
$24.5M
| $74K | ﹤0.01% |
10,756
-18,555
| -63% | -$128K |
|
1677
Zurn Elkay Water Solutions
ZWS
$7.82B
| $74K | ﹤0.01% |
+2,046
| New | +$74K |
|
|
TTCF
1678
DELISTED
Tattooed Chef, Inc Class A Common Stock
TTCF
| $74K | ﹤0.01% |
4,808
-3,604
| -43% | -$55.5K |
|
1679
Greenlane Holdings
GNLN
$5.23M
| – | – |
0
| – | -$121K |
|
1680
Warrior Met Coal
HCC
$3.04B
| $73K | ﹤0.01% |
2,844
-4,868
| -63% | -$125K |
|
1681
Insteel Industries
IIIN
$749M
| $73K | ﹤0.01% |
1,849
+1,146
| +163% | +$45.2K |
|
1682
Katapult Holdings
KPLT
$88.7M
| $73K | ﹤0.01% |
+867
| New | +$73K |
|
1683
Seres Therapeutics
MCRB
$139M
| $73K | ﹤0.01% |
441
-2,667
| -86% | -$441K |
|
|
NOA
1684
North American Construction
NOA
$399M
| $73K | ﹤0.01% |
4,878
-4,454
| -48% | -$66.7K |
|
|
NVEE
1685
DELISTED
NV5 Global
NVEE
| $73K | ﹤0.01% |
2,116
+1,360
| +180% | +$46.9K |
|
1686
Stem
STEM
$124M
| $73K | ﹤0.01% |
+193
| New | +$73K |
|
|
RESN
1687
DELISTED
Resonant Inc.
RESN
| $73K | ﹤0.01% |
42,812
+27,452
| +179% | +$46.8K |
|
1688
Fidelity MSCI Consumer Discretionary Index ETF
FDIS
$1.91B
| $72K | ﹤0.01% |
824
+294
| +55% | +$25.7K |
|
1689
Lightspeed Commerce
LSPD
$1.61B
| $72K | ﹤0.01% |
1,800
-18,509
| -91% | -$740K |
|
1690
iShares MSCI Global Metals & Mining Producers ETF
PICK
$841M
| $72K | ﹤0.01% |
+1,692
| New | +$72K |
|
1691
Regis Corp
RGS
$70.8M
| $72K | ﹤0.01% |
2,085
+571
| +38% | +$19.7K |
|
|
ENZ
1692
DELISTED
Enzo Biochem, Inc.
ENZ
| $72K | ﹤0.01% |
22,481
-35,479
| -61% | -$114K |
|
|
NIB
1693
DELISTED
iPath Bloomberg Cocoa Subindex Total Return ETN due June 24, 2038
NIB
| $72K | ﹤0.01% |
2,502
-1,344
| -35% | -$38.7K |
|
1694
Aegon
AEG
$12.2B
| $71K | ﹤0.01% |
15,059
+7,241
| +93% | +$34.1K |
|
1695
Celestica
CLS
$27.8B
| $71K | ﹤0.01% |
6,416
-124
| -2% | -$1.37K |
|
1696
Cohu
COHU
$964M
| $71K | ﹤0.01% |
1,886
-10,729
| -85% | -$404K |
|
1697
Flux Power
FLUX
$30.5M
| $71K | ﹤0.01% |
+16,697
| New | +$71K |
|
|
BRSL
1698
Brightstar Lottery PLC
BRSL
$3.12B
| $71K | ﹤0.01% |
+2,484
| New | +$71K |
|
1699
Extreme Networks
EXTR
$2.95B
| $70K | ﹤0.01% |
4,466
-19,856
| -82% | -$311K |
|
1700
National Vision
EYE
$1.82B
| $70K | ﹤0.01% |
1,463
+1,448
| +9,653% | +$69.3K |
|