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 | |
|---|---|---|---|---|---|---|
526
Robert Half
RHI
$3.56B
| $591K | ﹤0.01% |
+7,737
| New | +$591K |
|
527
Canadian Natural Resources
CNQ
$64.9B
| $588K | ﹤0.01% |
25,276
-55,424
| -69% | -$1.29M |
|
|
MVO
528
MV Oil Trust
MVO
$68.9M
| $587K | ﹤0.01% |
47,138
+34,271
| +266% | +$427K |
|
|
PACW
529
DELISTED
PacWest Bancorp
PACW
| $583K | ﹤0.01% |
+25,812
| New | +$583K |
|
530
General Dynamics
GD
$86.9B
| $582K | ﹤0.01% |
2,744
-1,386
| -34% | -$294K |
|
531
Perrigo
PRGO
$3.04B
| $581K | ﹤0.01% |
16,302
+11,102
| +214% | +$396K |
|
|
FTCV
532
DELISTED
FinTech Acquisition Corp. V Class A Common Stock
FTCV
| $580K | ﹤0.01% |
+58,300
| New | +$580K |
|
533
Schwab US Dividend Equity ETF
SCHD
$71.6B
| $579K | ﹤0.01% |
26,181
+2,796
| +12% | +$61.8K |
|
534
AppFolio
APPF
$9.92B
| $578K | ﹤0.01% |
5,529
-1,017
| -16% | -$106K |
|
535
Vanguard Small-Cap Growth ETF
VBK
$20.3B
| $575K | ﹤0.01% |
+2,951
| New | +$575K |
|
536
ProShares VIX Mid-Term Futures ETF
VIXM
$41.2M
| $571K | ﹤0.01% |
16,110
+14,647
| +1,001% | +$519K |
|
537
ADT
ADT
$7.05B
| $569K | ﹤0.01% |
76,036
-5,705
| -7% | -$42.7K |
|
538
Eli Lilly
LLY
$676B
| $565K | ﹤0.01% |
+1,748
| New | +$565K |
|
539
Huntsman Corp
HUN
$1.88B
| $563K | ﹤0.01% |
+22,953
| New | +$563K |
|
|
DQ
540
Daqo New Energy
DQ
$1.77B
| $560K | ﹤0.01% |
+10,562
| New | +$560K |
|
541
Boyd Gaming
BYD
$6.84B
| $556K | ﹤0.01% |
11,669
-19,514
| -63% | -$930K |
|
542
Array Technologies
ARRY
$1.25B
| $554K | ﹤0.01% |
+33,433
| New | +$554K |
|
543
MBIA
MBI
$374M
| $551K | ﹤0.01% |
59,939
-4,865
| -8% | -$44.7K |
|
544
Watsco
WSO
$15.8B
| $551K | ﹤0.01% |
+2,141
| New | +$551K |
|
|
GRIN
545
DELISTED
Grindrod Shipping Holdings Ltd. Ordinary Shares
GRIN
| $551K | ﹤0.01% |
+23,065
| New | +$551K |
|
546
Comerica
CMA
$8.9B
| $549K | ﹤0.01% |
7,735
-636
| -8% | -$45.1K |
|
|
TCDA
547
DELISTED
Tricida, Inc. Common Stock
TCDA
| $548K | ﹤0.01% |
52,350
+29,231
| +126% | +$306K |
|
548
SSR Mining
SSRM
$4.46B
| $547K | ﹤0.01% |
37,188
+30,342
| +443% | +$446K |
|
549
Electronic Arts
EA
$42.6B
| $546K | ﹤0.01% |
+4,721
| New | +$546K |
|
550
HSBC
HSBC
$237B
| $546K | ﹤0.01% |
20,977
-68,145
| -76% | -$1.77M |
|