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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1426
Toll Brothers
TOL
$13.5B
| $50K | ﹤0.01% |
1,200
| – | – |
|
1427
UGI
UGI
$7.07B
| $50K | ﹤0.01% |
+1,567
| New | +$50K |
|
|
GATO
1428
DELISTED
Gatos Silver, Inc.
GATO
| $50K | ﹤0.01% |
18,728
+7,926
| +73% | +$21.2K |
|
|
NS
1429
DELISTED
NuStar Energy L.P.
NS
| $50K | ﹤0.01% |
3,761
+2,448
| +186% | +$32.5K |
|
|
IRNT
1430
DELISTED
IronNet, Inc.
IRNT
| $50K | ﹤0.01% |
73,998
+9,407
| +15% | +$6.36K |
|
1431
BigBear.ai
BBAI
$2.54B
| $49K | ﹤0.01% |
31,504
+26,974
| +595% | +$42K |
|
1432
National Vision
EYE
$2.13B
| $49K | ﹤0.01% |
1,510
-246
| -14% | -$7.98K |
|
1433
iShares Gold Trust
IAU
$54.9B
| $49K | ﹤0.01% |
1,579
-2,416
| -60% | -$75K |
|
1434
Ring Energy
REI
$202M
| $49K | ﹤0.01% |
21,511
+11,478
| +114% | +$26.1K |
|
1435
Wheels Up
UP
$1.75B
| $49K | ﹤0.01% |
4,270
+2,928
| +218% | +$33.6K |
|
|
SEV
1436
DELISTED
Sono Group N.V. Common Shares
SEV
| $49K | ﹤0.01% |
19,639
+6,083
| +45% | +$15.2K |
|
|
VISL
1437
DELISTED
Vislink Technologies, Inc. Common Stock
VISL
| $49K | ﹤0.01% |
5,799
| – | – |
|
|
FINV
1438
FinVolution Group
FINV
$1.94B
| $48K | ﹤0.01% |
+11,322
| New | +$48K |
|
1439
IAMGOLD
IAG
$6.52B
| $48K | ﹤0.01% |
45,476
-4,169
| -8% | -$4.4K |
|
1440
Patrick Industries
PATK
$3.53B
| $48K | ﹤0.01% |
+1,676
| New | +$48K |
|
1441
Performance Food Group
PFGC
$16.5B
| $48K | ﹤0.01% |
+1,121
| New | +$48K |
|
1442
ProShares Short QQQ
PSQ
$532M
| $48K | ﹤0.01% |
645
-8,292
| -93% | -$617K |
|
1443
Vanguard Mortgage-Backed Securities ETF
VMBS
$15B
| $48K | ﹤0.01% |
+1,081
| New | +$48K |
|
1444
Westwater Resources
WWR
$63.9M
| $48K | ﹤0.01% |
42,114
+29,221
| +227% | +$33.3K |
|
1445
Clean Energy Fuels
CLNE
$581M
| $47K | ﹤0.01% |
8,972
+4,036
| +82% | +$21.1K |
|
1446
Castor Maritime
CTRM
$21.5M
| $47K | ﹤0.01% |
4,247
-1,022
| -19% | -$11.3K |
|
1447
Designer Brands
DBI
$205M
| $47K | ﹤0.01% |
+3,079
| New | +$47K |
|
1448
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.21B
| $47K | ﹤0.01% |
1,446
+1,134
| +363% | +$36.9K |
|
1449
FTC Solar
FTCI
$120M
| $47K | ﹤0.01% |
1,601
-154
| -9% | -$4.52K |
|
1450
Pixelworks
PXLW
$57.4M
| $47K | ﹤0.01% |
+2,484
| New | +$47K |
|