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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
FTAI Aviation
FTAI
$17.4B
| $62K | ﹤0.01% |
5,134
+1,123
| +28% | +$13.6K |
|
1002
Vuzix
VUZI
$183M
| $62K | ﹤0.01% |
+12,986
| New | +$62K |
|
|
PDCO
1003
DELISTED
Patterson Companies, Inc.
PDCO
| $62K | ﹤0.01% |
+3,196
| New | +$62K |
|
1004
Booz Allen Hamilton
BAH
$12.8B
| $61K | ﹤0.01% |
+1,356
| New | +$61K |
|
1005
Popular Inc
BPOP
$8.43B
| $61K | ﹤0.01% |
1,304
-4,697
| -78% | -$220K |
|
1006
HP
HPQ
$26.5B
| $61K | ﹤0.01% |
2,997
-3,210
| -52% | -$65.3K |
|
1007
ProPetro Holding
PUMP
$506M
| $61K | ﹤0.01% |
5,022
-4,324
| -46% | -$52.5K |
|
1008
Teekay Tankers
TNK
$1.79B
| $61K | ﹤0.01% |
+8,222
| New | +$61K |
|
1009
Verastem
VSTM
$575M
| $61K | ﹤0.01% |
1,530
-638
| -29% | -$25.4K |
|
|
AJRD
1010
DELISTED
Aerojet Rocketdyne Holdings, Inc.
AJRD
| $61K | ﹤0.01% |
1,754
-8,546
| -83% | -$297K |
|
|
SWIR
1011
DELISTED
Sierra Wireless
SWIR
| $61K | ﹤0.01% |
4,556
-3,598
| -44% | -$48.2K |
|
|
XLRN
1012
DELISTED
Acceleron Pharma Inc.
XLRN
| $61K | ﹤0.01% |
1,402
-1,086
| -44% | -$47.3K |
|
|
REV
1013
DELISTED
Revlon, Inc.
REV
| $61K | ﹤0.01% |
2,458
-9,642
| -80% | -$239K |
|
1014
Owens & Minor
OMI
$423M
| $60K | ﹤0.01% |
9,628
-362
| -4% | -$2.26K |
|
|
ENLC
1015
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $60K | ﹤0.01% |
+6,405
| New | +$60K |
|
1016
Pacific Biosciences
PACB
$378M
| $59K | ﹤0.01% |
+8,045
| New | +$59K |
|
1017
Teck Resources
TECK
$20.4B
| $59K | ﹤0.01% |
+2,759
| New | +$59K |
|
|
SAVE
1018
DELISTED
Spirit Airlines, Inc.
SAVE
| $59K | ﹤0.01% |
1,020
-3,534
| -78% | -$204K |
|
|
HCR
1019
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $59K | ﹤0.01% |
16,730
+12,606
| +306% | +$44.5K |
|
|
DO
1020
DELISTED
Diamond Offshore Drilling
DO
| $59K | ﹤0.01% |
6,264
+6,198
| +9,391% | +$58.4K |
|
1021
iShares MSCI Singapore ETF
EWS
$822M
| $58K | ﹤0.01% |
+2,627
| New | +$58K |
|
1022
Logitech
LOGI
$16B
| $58K | ﹤0.01% |
1,885
+1,257
| +200% | +$38.7K |
|
1023
National CineMedia
NCMI
$443M
| $58K | ﹤0.01% |
901
+783
| +664% | +$50.4K |
|
1024
Standard Motor Products
SMP
$901M
| $58K | ﹤0.01% |
1,207
-67
| -5% | -$3.22K |
|
|
CNSL
1025
DELISTED
Consolidated Communications Holdings, Inc.
CNSL
| $58K | ﹤0.01% |
5,880
-30,187
| -84% | -$298K |
|