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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Infosys
INFY
$70.4B
| $139K | 0.01% |
14,640
-85,796
| -85% | -$815K |
|
577
Papa John's
PZZA
$1.63B
| $139K | 0.01% |
+2,038
| New | +$139K |
|
578
Urban Outfitters
URBN
$6.33B
| $139K | 0.01% |
4,748
-1,617
| -25% | -$47.3K |
|
579
ANI Pharmaceuticals
ANIP
$2.11B
| $138K | 0.01% |
+3,514
| New | +$138K |
|
|
ACAS
580
DELISTED
American Capital Ltd
ACAS
| $138K | 0.01% |
11,350
+11,334
| +70,838% | +$138K |
|
|
CBM
581
DELISTED
Cambrex Corporation
CBM
| $137K | 0.01% |
3,467
-2,857
| -45% | -$113K |
|
|
CUDA
582
DELISTED
Barracuda Networks, Inc.
CUDA
| $137K | 0.01% |
8,804
+8,576
| +3,761% | +$133K |
|
|
HAR
583
DELISTED
Harman International Industries
HAR
| $137K | 0.01% |
1,432
-1,622
| -53% | -$155K |
|
584
PTC Therapeutics
PTCT
$4.63B
| $136K | 0.01% |
+5,112
| New | +$136K |
|
585
Genesis Energy
GEL
$2.03B
| $135K | 0.01% |
+3,530
| New | +$135K |
|
586
Ovintiv
OVV
$11B
| $135K | 0.01% |
4,203
+3,968
| +1,689% | +$127K |
|
587
Teck Resources
TECK
$19.8B
| $135K | 0.01% |
28,140
+27,809
| +8,402% | +$133K |
|
588
Thermo Fisher Scientific
TMO
$180B
| $135K | 0.01% |
1,109
-6,336
| -85% | -$771K |
|
|
BITA
589
DELISTED
Bitauto Holdings Limited
BITA
| $135K | 0.01% |
4,552
-2,313
| -34% | -$68.6K |
|
590
WEC Energy
WEC
$35.2B
| $134K | 0.01% |
2,579
+2,462
| +2,104% | +$128K |
|
|
BHR
591
Braemar Hotels & Resorts
BHR
$199M
| $133K | 0.01% |
9,602
+8,592
| +851% | +$119K |
|
592
Aramark
ARMK
$10B
| $132K | 0.01% |
6,183
+4,463
| +259% | +$95.3K |
|
593
Delek Logistics
DKL
$2.35B
| $132K | 0.01% |
+4,399
| New | +$132K |
|
594
JD.com
JD
$47.2B
| $132K | 0.01% |
5,088
-31,653
| -86% | -$821K |
|
595
Pfizer
PFE
$140B
| $132K | 0.01% |
4,431
-19,732
| -82% | -$588K |
|
|
ESRX
596
DELISTED
Express Scripts Holding Company
ESRX
| $132K | 0.01% |
+1,631
| New | +$132K |
|
597
American Eagle Outfitters
AEO
$3.34B
| $131K | 0.01% |
8,444
-13,240
| -61% | -$205K |
|
598
Insmed
INSM
$30.8B
| $131K | 0.01% |
+7,107
| New | +$131K |
|
|
LOCK
599
DELISTED
LifeLock, Inc.
LOCK
| $131K | 0.01% |
+15,004
| New | +$131K |
|
600
HDFC Bank
HDB
$180B
| $130K | 0.01% |
+4,258
| New | +$130K |
|