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 |
Apple
AAPL
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SP
901
DELISTED
SP Plus Corporation
SP
| $181K | ﹤0.01% |
5,923
+5,889
| +17,321% | +$180K |
|
902
Corsair Gaming
CRSR
$965M
| $180K | ﹤0.01% |
13,770
-46,878
| -77% | -$613K |
|
903
Goodyear
GT
$2.45B
| $180K | ﹤0.01% |
+16,837
| New | +$180K |
|
904
ProPetro Holding
PUMP
$506M
| $180K | ﹤0.01% |
18,037
+11,465
| +174% | +$114K |
|
905
Carter's
CRI
$1.1B
| $179K | ﹤0.01% |
2,553
+2,310
| +951% | +$162K |
|
|
AMJ
906
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $179K | ﹤0.01% |
9,491
+7,989
| +532% | +$151K |
|
|
CLVS
907
DELISTED
Clovis Oncology, Inc.
CLVS
| $178K | ﹤0.01% |
99,358
-50,486
| -34% | -$90.4K |
|
908
Mercury Systems
MRCY
$4.38B
| $177K | ﹤0.01% |
2,761
-1,105
| -29% | -$70.8K |
|
909
Riskified
RSKD
$732M
| $177K | ﹤0.01% |
39,959
+23,087
| +137% | +$102K |
|
910
Beam Global
BEEM
$42.9M
| $176K | ﹤0.01% |
11,350
-1,393
| -11% | -$21.6K |
|
911
Bloomin' Brands
BLMN
$589M
| $176K | ﹤0.01% |
10,595
-6,980
| -40% | -$116K |
|
912
Nordic American Tanker
NAT
$692M
| $175K | ﹤0.01% |
82,255
-75,464
| -48% | -$161K |
|
|
AMPS
913
DELISTED
Altus Power, Inc.
AMPS
| $175K | ﹤0.01% |
27,734
-2,782
| -9% | -$17.6K |
|
914
American Resources Corp
AREC
$179M
| $174K | ﹤0.01% |
120,063
-30,255
| -20% | -$43.8K |
|
|
WEBR
915
DELISTED
Weber Inc.
WEBR
| $174K | ﹤0.01% |
24,241
+9,405
| +63% | +$67.5K |
|
|
AGEN
916
Agenus
AGEN
$151M
| $173K | ﹤0.01% |
4,563
+1,431
| +46% | +$54.3K |
|
917
Idexx Laboratories
IDXX
$51.6B
| $173K | ﹤0.01% |
495
-595
| -55% | -$208K |
|
918
JB Hunt Transport Services
JBHT
$13.7B
| $173K | ﹤0.01% |
1,104
-3,927
| -78% | -$615K |
|
919
Fidelity Nasdaq Composite Index ETF
ONEQ
$8.74B
| $173K | ﹤0.01% |
4,024
-5,329
| -57% | -$229K |
|
920
Cenntro
CENN
$28.4M
| $172K | ﹤0.01% |
11,433
-3,211
| -22% | -$48.3K |
|
921
NeueHealth
NEUE
$60.9M
| $172K | ﹤0.01% |
1,187
+1,045
| +736% | +$151K |
|
|
MUDS
922
DELISTED
Mudrick Capital Acquisition Corporation II Class A Common Stock
MUDS
| $171K | ﹤0.01% |
17,026
-13,600
| -44% | -$137K |
|
923
Denison Mines
DNN
$2.18B
| $170K | ﹤0.01% |
175,204
+45,978
| +36% | +$44.6K |
|
924
DarioHealth
DRIO
$17M
| $170K | ﹤0.01% |
1,390
+745
| +116% | +$91.1K |
|
925
First Trust Preferred Securities and Income ETF
FPE
$6.19B
| $170K | ﹤0.01% |
9,919
+9,733
| +5,233% | +$167K |
|