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
|
+$54.1M |
| 2 |
Apple
AAPL
|
+$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
+$16.5M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 2 |
McDonald's
MCD
|
+$8.52M |
| 3 |
Ralph Lauren
RL
|
+$5.22M |
| 4 |
Intel
INTC
|
+$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ONDK
501
DELISTED
On Deck Capital, Inc.
ONDK
| $180K | 0.02% |
+15,548
| New | +$180K |
|
502
Gogo Inc
GOGO
$1.44B
| $179K | 0.02% |
8,363
+7,471
| +838% | +$160K |
|
503
Pembina Pipeline
PBA
$22.1B
| $179K | 0.02% |
5,550
+3,398
| +158% | +$110K |
|
|
INVN
504
DELISTED
Invensense Inc
INVN
| $179K | 0.02% |
+11,883
| New | +$179K |
|
|
AM
505
DELISTED
ANTERO MIDSTREAM PARTNERS LP
AM
| $179K | 0.02% |
+6,271
| New | +$179K |
|
|
POM
506
DELISTED
PEPCO HOLDINGS, INC.
POM
| $179K | 0.02% |
6,648
-10,357
| -61% | -$279K |
|
507
Ameriprise Financial
AMP
$46.4B
| $177K | 0.01% |
1,422
+280
| +25% | +$34.9K |
|
|
MLNX
508
DELISTED
Mellanox Technologies, Ltd.
MLNX
| $177K | 0.01% |
+3,647
| New | +$177K |
|
509
Campbell Soup
CPB
$10.1B
| $176K | 0.01% |
+3,708
| New | +$176K |
|
510
Methode Electronics
MEI
$255M
| $176K | 0.01% |
+6,413
| New | +$176K |
|
511
Truist Financial
TFC
$59.3B
| $175K | 0.01% |
4,346
+3,690
| +563% | +$149K |
|
512
Harley-Davidson
HOG
$3.77B
| $174K | 0.01% |
3,104
+2,212
| +248% | +$124K |
|
513
Haoxi Health Technology Ltd
HAO
$3.45M
| $174K | 0.01% |
+221
| New | +$174K |
|
514
Delek US
DK
$1.82B
| $173K | 0.01% |
4,699
+4,085
| +665% | +$150K |
|
515
iShares MSCI ACWI ETF
ACWI
$22.3B
| $172K | 0.01% |
+2,897
| New | +$172K |
|
|
CVRR
516
DELISTED
CVR Refining, LP
CVRR
| $172K | 0.01% |
+9,420
| New | +$172K |
|
|
ZEN
517
DELISTED
ZENDESK INC
ZEN
| $171K | 0.01% |
7,723
+5,519
| +250% | +$122K |
|
|
HIFR
518
DELISTED
InfraREIT, Inc.
HIFR
| $171K | 0.01% |
+6,037
| New | +$171K |
|
|
FSL
519
DELISTED
FREESCALE SEMICONDUCTOR LTD
FSL
| $171K | 0.01% |
+4,298
| New | +$171K |
|
520
CarMax
KMX
$9.21B
| $170K | 0.01% |
2,571
-54
| -2% | -$3.57K |
|
521
Larimar Therapeutics
LRMR
$336M
| $170K | 0.01% |
+409
| New | +$170K |
|
|
CERN
522
DELISTED
Cerner Corp
CERN
| $170K | 0.01% |
2,463
-2,169
| -47% | -$150K |
|
|
JCP
523
DELISTED
J.C. Penney Company, Inc.
JCP
| $170K | 0.01% |
+20,182
| New | +$170K |
|
|
EGN
524
DELISTED
Energen
EGN
| $170K | 0.01% |
2,500
+3
| +0.1% | +$204 |
|
|
QLIK
525
DELISTED
QLIK TECHNOLOGIES INC COM STK (DE)
QLIK
| $170K | 0.01% |
+4,871
| New | +$170K |
|