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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1626
Enova International
ENVA
$3.17B
| $15K | ﹤0.01% |
284
-546
| -66% | -$28.8K |
|
1627
ESSA Pharma
EPIX
$9.93M
| $15K | ﹤0.01% |
+5,689
| New | +$15K |
|
1628
First Financial Bankshares
FFIN
$5.09B
| $15K | ﹤0.01% |
+527
| New | +$15K |
|
1629
Hasbro
HAS
$10.5B
| $15K | ﹤0.01% |
+234
| New | +$15K |
|
1630
Mativ Holdings
MATV
$697M
| $15K | ﹤0.01% |
+1,038
| New | +$15K |
|
1631
MasterBrand
MBC
$1.7B
| $15K | ﹤0.01% |
1,364
+1,058
| +346% | +$11.6K |
|
1632
Murphy USA
MUSA
$7.37B
| $15K | ﹤0.01% |
49
-1,390
| -97% | -$426K |
|
|
NAK
1633
Northern Dynasty Minerals
NAK
$452M
| $15K | ﹤0.01% |
+64,000
| New | +$15K |
|
|
PEO
1634
Adams Natural Resources Fund
PEO
$585M
| $15K | ﹤0.01% |
759
+533
| +236% | +$10.5K |
|
1635
SFL Corp
SFL
$1.07B
| $15K | ﹤0.01% |
1,688
-21,458
| -93% | -$191K |
|
1636
SGHC Ltd
SGHC
$5.91B
| $15K | ﹤0.01% |
5,487
+686
| +14% | +$1.88K |
|
1637
Silgan Holdings
SLGN
$4.62B
| $15K | ﹤0.01% |
+320
| New | +$15K |
|
1638
SPDR Portfolio TIPS ETF
SPIP
$987M
| $15K | ﹤0.01% |
599
-2,471
| -80% | -$61.9K |
|
1639
Sempra
SRE
$53.8B
| $15K | ﹤0.01% |
+210
| New | +$15K |
|
1640
Sensus Healthcare
SRTS
$51.6M
| $15K | ﹤0.01% |
4,989
+3,145
| +171% | +$9.46K |
|
1641
Vanguard Mid-Cap Value ETF
VOE
$19B
| $15K | ﹤0.01% |
109
-2,548
| -96% | -$351K |
|
1642
Expro
XPRO
$1.43B
| $15K | ﹤0.01% |
884
-5,501
| -86% | -$93.3K |
|
1643
Arena Group
AREN
$277M
| $14K | ﹤0.01% |
+3,094
| New | +$14K |
|
1644
Aterian
ATER
$9.99M
| $14K | ﹤0.01% |
2,610
+2,602
| +32,525% | +$14K |
|
1645
Churchill Downs
CHDN
$6.76B
| $14K | ﹤0.01% |
+105
| New | +$14K |
|
1646
Citizens
CIA
$281M
| $14K | ﹤0.01% |
+5,951
| New | +$14K |
|
1647
Encore Capital Group
ECPG
$1.06B
| $14K | ﹤0.01% |
299
-13
| -4% | -$609 |
|
1648
Gaia
GAIA
$152M
| $14K | ﹤0.01% |
6,444
+685
| +12% | +$1.49K |
|
1649
Heartland Express
HTLD
$658M
| $14K | ﹤0.01% |
+895
| New | +$14K |
|
1650
Hydrofarm Holdings
HYFM
$15.1M
| $14K | ﹤0.01% |
1,856
-15,854
| -90% | -$120K |
|