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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
Carlyle Group
CG
$24.4B
| $87K | ﹤0.01% |
5,509
-30,048
| -85% | -$475K |
|
952
First Trust Natural Gas ETF
FCG
$336M
| $87K | ﹤0.01% |
+3,574
| New | +$87K |
|
953
Rambus
RMBS
$10.5B
| $87K | ﹤0.01% |
6,663
-5,978
| -47% | -$78.1K |
|
954
Evolution Petroleum
EPM
$188M
| $86K | ﹤0.01% |
10,758
+909
| +9% | +$7.27K |
|
955
PennyMac Financial
PFSI
$6.52B
| $86K | ﹤0.01% |
+5,048
| New | +$86K |
|
956
Protolabs
PRLB
$1.18B
| $86K | ﹤0.01% |
+1,691
| New | +$86K |
|
|
MXWL
957
DELISTED
Maxwell Technologies Inc
MXWL
| $85K | ﹤0.01% |
+14,771
| New | +$85K |
|
|
GTT
958
DELISTED
GTT Communications, Inc.
GTT
| $85K | ﹤0.01% |
+3,507
| New | +$85K |
|
959
American Axle
AXL
$743M
| $84K | ﹤0.01% |
4,492
-19,189
| -81% | -$359K |
|
960
Union Pacific
UNP
$129B
| $84K | ﹤0.01% |
800
-28,179
| -97% | -$2.96M |
|
|
SEMG
961
DELISTED
SEMGROUP CORPORATION
SEMG
| $84K | ﹤0.01% |
+2,336
| New | +$84K |
|
962
Banco Bilbao Vizcaya Argentaria
BBVA
$109B
| $83K | ﹤0.01% |
10,979
-1,988
| -15% | -$15K |
|
963
Intellia Therapeutics
NTLA
$1.33B
| $83K | ﹤0.01% |
+5,920
| New | +$83K |
|
964
Old Republic International
ORI
$9.85B
| $83K | ﹤0.01% |
+4,087
| New | +$83K |
|
|
WBA
965
DELISTED
Walgreens Boots Alliance
WBA
| $83K | ﹤0.01% |
1,005
-35,019
| -97% | -$2.89M |
|
966
DNOW Inc
DNOW
$1.6B
| $82K | ﹤0.01% |
4,842
-11,333
| -70% | -$192K |
|
967
Fossil Group
FOSL
$164M
| $82K | ﹤0.01% |
+4,724
| New | +$82K |
|
968
IDT Corp
IDT
$1.68B
| $82K | ﹤0.01% |
+7,684
| New | +$82K |
|
969
KBR
KBR
$6.29B
| $82K | ﹤0.01% |
5,476
+4,750
| +654% | +$71.1K |
|
|
VEDL
970
DELISTED
Vedanta Limited American Depostary Shares (Each representing four equity shares)
VEDL
| $82K | ﹤0.01% |
4,785
+425
| +10% | +$7.28K |
|
971
Kodak
KODK
$490M
| $81K | ﹤0.01% |
+7,075
| New | +$81K |
|
|
NGD
972
New Gold Inc
NGD
$5.11B
| $81K | ﹤0.01% |
27,328
+13,274
| +94% | +$39.3K |
|
973
Natural Health Trends
NHTC
$51.1M
| $81K | ﹤0.01% |
2,836
+2,787
| +5,688% | +$79.6K |
|
974
FreightCar America
RAIL
$167M
| $81K | ﹤0.01% |
6,506
+4,572
| +236% | +$56.9K |
|
975
Bio-Rad Laboratories Class A
BIO
$7.59B
| $80K | ﹤0.01% |
+402
| New | +$80K |
|