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
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
BioNTech
BNTX
$27B
| $809K | ﹤0.01% |
+7,606
| New | +$809K |
|
477
Enphase Energy
ENPH
$5.18B
| $809K | ﹤0.01% |
20,413
-99,548
| -83% | -$3.95M |
|
478
James Hardie Industries plc
JHX
$11.7B
| $809K | ﹤0.01% |
30,096
+24,632
| +451% | +$662K |
|
479
BGC Group
BGC
$4.71B
| $807K | ﹤0.01% |
78,920
+50,826
| +181% | +$520K |
|
480
Philips
PHG
$26.5B
| $805K | ﹤0.01% |
33,591
-104,103
| -76% | -$2.49M |
|
|
ARR
481
Armour Residential REIT
ARR
$1.78B
| $803K | ﹤0.01% |
47,771
+34,653
| +264% | +$582K |
|
482
Arvinas
ARVN
$575M
| $800K | ﹤0.01% |
108,800
+23,718
| +28% | +$174K |
|
483
Alkami Technology
ALKT
$2.63B
| $797K | ﹤0.01% |
26,453
+26,344
| +24,169% | +$794K |
|
484
Nice
NICE
$8.67B
| $797K | ﹤0.01% |
4,719
-41,732
| -90% | -$7.05M |
|
485
ProShares Ultra Bitcoin ETF
BITU
$1.09B
| $797K | ﹤0.01% |
+15,411
| New | +$797K |
|
486
Redwire
RDW
$1.2B
| $794K | ﹤0.01% |
+48,768
| New | +$794K |
|
|
HPP
487
Hudson Pacific Properties
HPP
$1.16B
| $793K | ﹤0.01% |
289,685
+213,930
| +282% | +$586K |
|
488
Alpha Metallurgical Resources
AMR
$1.91B
| $792K | ﹤0.01% |
7,046
+4,901
| +228% | +$551K |
|
489
Wolverine World Wide
WWW
$2.59B
| $788K | ﹤0.01% |
43,586
-16,153
| -27% | -$292K |
|
490
Ingredion
INGR
$8.24B
| $784K | ﹤0.01% |
5,781
-749
| -11% | -$102K |
|
491
Bunge Global
BG
$16.9B
| $780K | ﹤0.01% |
+9,716
| New | +$780K |
|
492
Texas Roadhouse
TXRH
$11.2B
| $778K | ﹤0.01% |
4,156
-590
| -12% | -$110K |
|
493
Lumentum
LITE
$10.4B
| $777K | ﹤0.01% |
8,178
-3,956
| -33% | -$376K |
|
494
Equinox Gold
EQX
$7.65B
| $775K | ﹤0.01% |
134,893
-5,246
| -4% | -$30.1K |
|
495
WNS Holdings
WNS
$3.24B
| $775K | ﹤0.01% |
12,258
+10,707
| +690% | +$677K |
|
496
B2Gold
BTG
$5.52B
| $773K | ﹤0.01% |
214,242
-341,429
| -61% | -$1.23M |
|
497
Cipher Mining
CIFR
$2.96B
| $765K | ﹤0.01% |
160,178
-24,837
| -13% | -$119K |
|
498
Turning Point Brands
TPB
$1.82B
| $759K | ﹤0.01% |
10,028
+2,911
| +41% | +$220K |
|
499
Starwood Property Trust
STWD
$7.56B
| $758K | ﹤0.01% |
37,788
-20,061
| -35% | -$402K |
|
500
Thermo Fisher Scientific
TMO
$186B
| $757K | ﹤0.01% |
1,869
-4,375
| -70% | -$1.77M |
|