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 | |
|---|---|---|---|---|---|---|
801
Coherent
COHR
$16.3B
| $465K | ﹤0.01% |
+6,807
| New | +$465K |
|
802
Southern Copper
SCCO
$84.3B
| $465K | ﹤0.01% |
7,922
-12,792
| -62% | -$751K |
|
803
Amneal Pharmaceuticals
AMRX
$3.2B
| $464K | ﹤0.01% |
+96,998
| New | +$464K |
|
804
Bio-Techne
TECH
$8.14B
| $464K | ﹤0.01% |
+3,592
| New | +$464K |
|
805
SPDR S&P Bank ETF
KBE
$1.56B
| $463K | ﹤0.01% |
+8,490
| New | +$463K |
|
806
JB Hunt Transport Services
JBHT
$13.5B
| $463K | ﹤0.01% |
+2,266
| New | +$463K |
|
807
CleanSpark
CLSK
$2.93B
| $459K | ﹤0.01% |
48,245
+41,119
| +577% | +$391K |
|
808
LPL Financial
LPLA
$27.5B
| $457K | ﹤0.01% |
+2,860
| New | +$457K |
|
|
HLTH
809
DELISTED
Cue Health Inc. Common Stock
HLTH
| $456K | ﹤0.01% |
+34,046
| New | +$456K |
|
810
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$13.1M
| $455K | ﹤0.01% |
28,332
+6,342
| +29% | +$102K |
|
811
Darden Restaurants
DRI
$24.8B
| $454K | ﹤0.01% |
+3,019
| New | +$454K |
|
812
Signet Jewelers
SIG
$3.8B
| $454K | ﹤0.01% |
5,224
+4,428
| +556% | +$385K |
|
813
Vanguard Total World Stock ETF
VT
$52.8B
| $453K | ﹤0.01% |
+4,219
| New | +$453K |
|
814
NOV
NOV
$4.91B
| $452K | ﹤0.01% |
33,410
-84,808
| -72% | -$1.15M |
|
815
TechnipFMC
FTI
$16.8B
| $449K | ﹤0.01% |
75,933
+18,909
| +33% | +$112K |
|
816
Hecla Mining
HL
$7.56B
| $449K | ﹤0.01% |
86,053
-53,826
| -38% | -$281K |
|
817
iShares S&P GSCI Commodity-Indexed Trust
GSG
$994M
| $447K | ﹤0.01% |
26,160
-53,618
| -67% | -$916K |
|
|
SILV
818
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $447K | ﹤0.01% |
56,573
-6,512
| -10% | -$51.5K |
|
|
MFGP
819
DELISTED
Micro Focus International plc. American Depositary Shares, each representing One Ordinary Share
MFGP
| $447K | ﹤0.01% |
+80,332
| New | +$447K |
|
820
Impinj
PI
$5.54B
| $446K | ﹤0.01% |
5,037
+4,413
| +707% | +$391K |
|
|
MRO
821
DELISTED
Marathon Oil Corporation
MRO
| $445K | ﹤0.01% |
27,159
-177,704
| -87% | -$2.91M |
|
822
SandRidge Energy
SD
$426M
| $444K | ﹤0.01% |
42,450
+25,865
| +156% | +$271K |
|
823
Boise Cascade
BCC
$3.31B
| $443K | ﹤0.01% |
6,226
+3,235
| +108% | +$230K |
|
824
Thor Industries
THO
$5.76B
| $443K | ﹤0.01% |
4,274
-6,303
| -60% | -$653K |
|
825
Mercury Systems
MRCY
$4.43B
| $439K | ﹤0.01% |
7,987
+7,137
| +840% | +$392K |
|