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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ARR
801
Armour Residential REIT
ARR
$1.72B
| $224K | ﹤0.01% |
+13,118
| New | +$224K |
|
|
TLN
802
Talen Energy Corporation Common Stock
TLN
$18.3B
| $224K | ﹤0.01% |
+1,122
| New | +$224K |
|
803
Absci
ABSI
$410M
| $223K | ﹤0.01% |
89,128
+83,570
| +1,504% | +$209K |
|
804
EVgo
EVGO
$531M
| $223K | ﹤0.01% |
84,110
-106,162
| -56% | -$281K |
|
|
HPP
805
Hudson Pacific Properties
HPP
$1.12B
| $223K | ﹤0.01% |
+75,755
| New | +$223K |
|
806
VanEck Uranium + Nuclear Energy ETF
NLR
$2.49B
| $223K | ﹤0.01% |
3,047
+779
| +34% | +$57K |
|
807
Veralto
VLTO
$27.1B
| $223K | ﹤0.01% |
2,296
-11,573
| -83% | -$1.12M |
|
808
Knife River
KNF
$4.57B
| $222K | ﹤0.01% |
+2,472
| New | +$222K |
|
809
GoPro
GPRO
$316M
| $221K | ﹤0.01% |
334,039
+172,911
| +107% | +$114K |
|
810
iRobot
IRBT
$114M
| $221K | ﹤0.01% |
82,058
+55,824
| +213% | +$150K |
|
811
Invesco
IVZ
$10.1B
| $221K | ﹤0.01% |
14,590
-111,144
| -88% | -$1.68M |
|
812
Alliant Energy
LNT
$16.6B
| $221K | ﹤0.01% |
3,439
+1,040
| +43% | +$66.8K |
|
813
Alexandria Real Estate Equities
ARE
$14.5B
| $220K | ﹤0.01% |
2,381
-44,750
| -95% | -$4.13M |
|
814
GigaCloud Technology
GCT
$1.09B
| $219K | ﹤0.01% |
15,492
-20,289
| -57% | -$287K |
|
815
Ultra Clean Holdings
UCTT
$1.16B
| $219K | ﹤0.01% |
+10,261
| New | +$219K |
|
816
Children's Place
PLCE
$162M
| $218K | ﹤0.01% |
+24,995
| New | +$218K |
|
817
Air Lease Corp
AL
$7.1B
| $218K | ﹤0.01% |
4,520
+4,335
| +2,343% | +$209K |
|
818
Camtek
CAMT
$3.84B
| $218K | ﹤0.01% |
3,723
-5,165
| -58% | -$302K |
|
819
Navitas Semiconductor
NVTS
$1.3B
| $218K | ﹤0.01% |
106,534
-146,223
| -58% | -$299K |
|
820
Copa Holdings
CPA
$4.82B
| $217K | ﹤0.01% |
2,352
-3,166
| -57% | -$292K |
|
821
iShares Russell Mid-Cap Growth ETF
IWP
$20.7B
| $216K | ﹤0.01% |
+1,840
| New | +$216K |
|
|
LOMA
822
Loma Negra
LOMA
$922M
| $216K | ﹤0.01% |
19,725
+3,711
| +23% | +$40.6K |
|
823
Ginkgo Bioworks
DNA
$618M
| $215K | ﹤0.01% |
37,775
-9,328
| -20% | -$53.1K |
|
824
Equinor
EQNR
$61.1B
| $213K | ﹤0.01% |
+8,057
| New | +$213K |
|
825
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $213K | ﹤0.01% |
12,176
+6,684
| +122% | +$117K |
|