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 | |
|---|---|---|---|---|---|---|
676
Schwab US Broad Market ETF
SCHB
$36.9B
| $374K | ﹤0.01% |
+26,763
| New | +$374K |
|
677
Clene
CLNN
$62.3M
| $370K | ﹤0.01% |
6,621
+6,543
| +8,388% | +$366K |
|
678
Zoetis
ZTS
$66.7B
| $370K | ﹤0.01% |
2,497
-1,520
| -38% | -$225K |
|
679
HCA Healthcare
HCA
$94.4B
| $368K | ﹤0.01% |
2,007
-11,319
| -85% | -$2.08M |
|
680
Occidental Petroleum
OXY
$45.3B
| $368K | ﹤0.01% |
6,000
-154,189
| -96% | -$9.46M |
|
|
ESTE
681
DELISTED
Earthstone Energy Inc. Class A Common Stock
ESTE
| $366K | ﹤0.01% |
29,729
-59,183
| -67% | -$729K |
|
682
BorgWarner
BWA
$9.58B
| $364K | ﹤0.01% |
+13,194
| New | +$364K |
|
683
Ternium
TX
$6.89B
| $361K | ﹤0.01% |
+13,190
| New | +$361K |
|
684
B2Gold
BTG
$5.9B
| $359K | ﹤0.01% |
111,648
-26,544
| -19% | -$85.4K |
|
685
LendingClub
LC
$1.92B
| $359K | ﹤0.01% |
32,579
+23,612
| +263% | +$260K |
|
686
Algonquin Power & Utilities
AQN
$4.29B
| $358K | ﹤0.01% |
32,861
+23,907
| +267% | +$260K |
|
687
Grab
GRAB
$22.4B
| $358K | ﹤0.01% |
136,269
-172,925
| -56% | -$454K |
|
688
Kennametal
KMT
$1.61B
| $358K | ﹤0.01% |
+17,399
| New | +$358K |
|
689
MannKind Corp
MNKD
$1.66B
| $358K | ﹤0.01% |
+115,937
| New | +$358K |
|
690
Digimarc
DMRC
$199M
| $354K | ﹤0.01% |
26,167
+25,823
| +7,507% | +$349K |
|
691
Rocket Lab Corporation Common Stock
RKLB
$23.4B
| $354K | ﹤0.01% |
87,087
+50,990
| +141% | +$207K |
|
692
Burlington
BURL
$17.6B
| $353K | ﹤0.01% |
+3,158
| New | +$353K |
|
693
Neurocrine Biosciences
NBIX
$14.2B
| $352K | ﹤0.01% |
3,318
-10,785
| -76% | -$1.14M |
|
694
Columbia Sportswear
COLM
$3.05B
| $351K | ﹤0.01% |
+5,223
| New | +$351K |
|
695
Beyond Air
XAIR
$12M
| $351K | ﹤0.01% |
2,364
+156
| +7% | +$23.2K |
|
696
USA Compression Partners
USAC
$2.91B
| $349K | ﹤0.01% |
+20,073
| New | +$349K |
|
697
Hudbay
HBM
$5.36B
| $348K | ﹤0.01% |
86,487
-93,105
| -52% | -$375K |
|
698
Sprott Uranium Miners ETF
URNM
$1.74B
| $348K | ﹤0.01% |
10,730
+2,096
| +24% | +$68K |
|
699
ProShares UltraPro Short Dow 30
SDOW
$168M
| $347K | ﹤0.01% |
1,999
-9,606
| -83% | -$1.67M |
|
700
Encompass Health
EHC
$12.8B
| $343K | ﹤0.01% |
+7,588
| New | +$343K |
|