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 | |
|---|---|---|---|---|---|---|
476
AES
AES
$9.06B
| $195K | 0.01% |
+20,000
| New | +$195K |
|
477
Asbury Automotive
ABG
$4.86B
| $193K | 0.01% |
+2,387
| New | +$193K |
|
478
Comerica
CMA
$8.9B
| $192K | 0.01% |
4,677
+1,935
| +71% | +$79.4K |
|
479
Fidelity National Information Services
FIS
$34.7B
| $191K | 0.01% |
2,850
-6,710
| -70% | -$450K |
|
|
FLOW
480
DELISTED
SPX FLOW, Inc.
FLOW
| $191K | 0.01% |
+5,549
| New | +$191K |
|
481
Gildan
GIL
$8.08B
| $189K | 0.01% |
6,292
+5,143
| +448% | +$154K |
|
482
Integer Holdings
ITGR
$3.59B
| $189K | 0.01% |
+3,683
| New | +$189K |
|
483
Opko Health
OPK
$1.12B
| $189K | 0.01% |
22,502
+4,677
| +26% | +$39.3K |
|
484
W.P. Carey
WPC
$14.8B
| $189K | 0.01% |
3,349
+3,251
| +3,317% | +$183K |
|
485
YPF
YPF
$11.3B
| $189K | 0.01% |
12,444
-34,594
| -74% | -$525K |
|
|
BXLT
486
DELISTED
BAXALTA INC COM STK (DE)
BXLT
| $189K | 0.01% |
+6,027
| New | +$189K |
|
487
Dynavax Technologies
DVAX
$1.14B
| $187K | 0.01% |
7,626
-13,172
| -63% | -$323K |
|
|
LLL
488
DELISTED
L3 Technologies, Inc.
LLL
| $187K | 0.01% |
+1,795
| New | +$187K |
|
|
DISCA
489
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $187K | 0.01% |
+7,192
| New | +$187K |
|
|
OAK
490
DELISTED
OAKTREE CAPITAL GROUP, LLC
OAK
| $186K | 0.01% |
+3,764
| New | +$186K |
|
491
iShares MSCI Japan Small-Cap ETF
SCJ
$148M
| $184K | 0.01% |
3,330
-4,825
| -59% | -$267K |
|
492
ProShares Short VIX Short-Term Futures ETF
SVXY
$251M
| $184K | 0.01% |
3,874
+3,574
| +1,191% | +$170K |
|
493
Affiliated Managers Group
AMG
$6.6B
| $182K | 0.01% |
1,065
-283
| -21% | -$48.4K |
|
|
WRK
494
DELISTED
WestRock Company
WRK
| $182K | 0.01% |
+3,935
| New | +$182K |
|
495
Vanguard FTSE Europe ETF
VGK
$26.9B
| $181K | 0.01% |
3,694
-7,084
| -66% | -$347K |
|
496
EOG Resources
EOG
$65.7B
| $180K | 0.01% |
+2,478
| New | +$180K |
|
|
497
Meta Platforms (Facebook)
META
$1.89T
| $179K | 0.01% |
2,000
-223,596
| -99% | -$20M |
|
|
BDBD
498
DELISTED
BOULDER BRANDS INC
BDBD
| $179K | 0.01% |
21,901
+13,456
| +159% | +$110K |
|
|
OKS
499
DELISTED
Oneok Partners LP
OKS
| $178K | 0.01% |
6,103
+2,312
| +61% | +$67.4K |
|
500
Fluor
FLR
$6.69B
| $177K | 0.01% |
4,191
-6,928
| -62% | -$293K |
|