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 | |
|---|---|---|---|---|---|---|
576
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.15B
| $141K | 0.01% |
+3,252
| New | +$141K |
|
577
Oil States International
OIS
$334M
| $141K | 0.01% |
3,801
+3,729
| +5,179% | +$138K |
|
578
Bio-Rad Laboratories Class A
BIO
$7.86B
| $140K | 0.01% |
+935
| New | +$140K |
|
579
Comerica
CMA
$8.83B
| $140K | 0.01% |
2,742
+2,591
| +1,716% | +$132K |
|
580
Exponent
EXPO
$3.59B
| $140K | 0.01% |
6,258
+4,462
| +248% | +$99.8K |
|
581
Hershey
HSY
$38B
| $140K | 0.01% |
1,585
-3,009
| -65% | -$266K |
|
582
Texas Capital Bancshares
TCBI
$3.99B
| $140K | 0.01% |
+2,250
| New | +$140K |
|
|
RAI
583
DELISTED
Reynolds American Inc
RAI
| $140K | 0.01% |
3,762
-22,792
| -86% | -$848K |
|
584
Liberty Global Class C
LBTYK
$4.04B
| $139K | 0.01% |
+3,412
| New | +$139K |
|
|
PVA
585
DELISTED
PENN VIRGINIA CORP
PVA
| $139K | 0.01% |
+31,824
| New | +$139K |
|
586
ODP
ODP
$642M
| $138K | 0.01% |
1,594
-1,217
| -43% | -$105K |
|
|
OMED
587
DELISTED
OncoMed Pharmaceuticals, Inc.
OMED
| $137K | 0.01% |
+6,131
| New | +$137K |
|
588
American Axle
AXL
$723M
| $137K | 0.01% |
+6,569
| New | +$137K |
|
589
First Trust NYSE Arca Biotechnology Index Fund
FBT
$1.08B
| $137K | 0.01% |
1,109
-174
| -14% | -$21.5K |
|
|
LVLT
590
DELISTED
Level 3 Communications Inc
LVLT
| $137K | 0.01% |
2,618
-109
| -4% | -$5.7K |
|
|
OWW
591
DELISTED
ORBITZ WORLDWIDE, INC
OWW
| $137K | 0.01% |
12,050
+6,757
| +128% | +$76.8K |
|
592
Helen of Troy
HELE
$563M
| $136K | 0.01% |
1,398
+1,366
| +4,269% | +$133K |
|
|
EXPR
593
DELISTED
Express, Inc.
EXPR
| $136K | 0.01% |
+378
| New | +$136K |
|
594
Moody's
MCO
$91B
| $135K | 0.01% |
1,251
-4,300
| -77% | -$464K |
|
595
Comscore
SCOR
$31.8M
| $135K | 0.01% |
127
+112
| +747% | +$119K |
|
596
United Parks & Resorts
PRKS
$2.9B
| $135K | 0.01% |
7,344
+3,377
| +85% | +$62.1K |
|
|
RICE
597
DELISTED
Rice Energy Inc.
RICE
| $135K | 0.01% |
6,489
+4,195
| +183% | +$87.3K |
|
|
SNDK
598
DELISTED
SANDISK CORP
SNDK
| $135K | 0.01% |
2,323
-22,845
| -91% | -$1.33M |
|
599
MGM Resorts International
MGM
$9.85B
| $134K | 0.01% |
7,359
-4,105
| -36% | -$74.7K |
|
600
WEX
WEX
$5.91B
| $134K | 0.01% |
+1,183
| New | +$134K |
|