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 | |
|---|---|---|---|---|---|---|
876
First Trust Natural Gas ETF
FCG
$334M
| $54K | ﹤0.01% |
1,144
+1,060
| +1,262% | +$50K |
|
|
ESL
877
DELISTED
Esterline Technologies
ESL
| $54K | ﹤0.01% |
569
+240
| +73% | +$22.8K |
|
|
BBG
878
DELISTED
Bill Barrett Corp
BBG
| $54K | ﹤0.01% |
6,388
+6,042
| +1,746% | +$51.1K |
|
|
ALJ
879
DELISTED
Alon U S A Energy Inc
ALJ
| $54K | ﹤0.01% |
+2,893
| New | +$54K |
|
880
Interactive Brokers
IBKR
$27.8B
| $53K | ﹤0.01% |
5,120
-4,328
| -46% | -$44.8K |
|
881
Sasol
SSL
$4.54B
| $53K | ﹤0.01% |
1,435
-6,131
| -81% | -$226K |
|
|
MKTO
882
DELISTED
MARKETO INC COM STK (DE)
MKTO
| $53K | ﹤0.01% |
1,905
+1,708
| +867% | +$47.5K |
|
|
LPNT
883
DELISTED
LifePoint Health, Inc.
LPNT
| $53K | ﹤0.01% |
+615
| New | +$53K |
|
884
Calavo Growers
CVGW
$479M
| $52K | ﹤0.01% |
1,018
+164
| +19% | +$8.38K |
|
885
Jazz Pharmaceuticals
JAZZ
$7.7B
| $52K | ﹤0.01% |
300
-2,156
| -88% | -$374K |
|
886
First Trust Cloud Computing ETF
SKYY
$3.24B
| $52K | ﹤0.01% |
1,782
-443
| -20% | -$12.9K |
|
887
Stellantis
STLA
$25.3B
| $52K | ﹤0.01% |
5,549
-5,503
| -50% | -$51.6K |
|
888
Talphera
TLPH
$17.4M
| $52K | ﹤0.01% |
624
+391
| +168% | +$32.6K |
|
889
Vanda Pharmaceuticals
VNDA
$265M
| $52K | ﹤0.01% |
4,160
+3,437
| +475% | +$43K |
|
|
CONN
890
DELISTED
Conn's Inc.
CONN
| $52K | ﹤0.01% |
1,318
-7,165
| -84% | -$283K |
|
|
DBD
891
DELISTED
Diebold Nixdorf Incorporated
DBD
| $52K | ﹤0.01% |
1,514
+1,384
| +1,065% | +$47.5K |
|
|
IMMU
892
DELISTED
Immunomedics Inc
IMMU
| $52K | ﹤0.01% |
12,934
+7,814
| +153% | +$31.4K |
|
|
PRXL
893
DELISTED
Parexel International Corp
PRXL
| $52K | ﹤0.01% |
+819
| New | +$52K |
|
894
AeroVironment
AVAV
$12.3B
| $51K | ﹤0.01% |
+1,979
| New | +$51K |
|
895
Ciena
CIEN
$18.4B
| $51K | ﹤0.01% |
2,154
-15,096
| -88% | -$357K |
|
896
Cognizant
CTSH
$33.8B
| $51K | ﹤0.01% |
+845
| New | +$51K |
|
897
Generac Holdings
GNRC
$10.9B
| $51K | ﹤0.01% |
1,298
-812
| -38% | -$31.9K |
|
898
Teekay Tankers
TNK
$1.79B
| $51K | ﹤0.01% |
978
-440
| -31% | -$22.9K |
|
|
WW
899
DELISTED
WW International
WW
| $51K | ﹤0.01% |
10,681
+9,860
| +1,201% | +$47.1K |
|
900
Direxion Daily FTSE China Bear 3X Shares
YANG
$173M
| $51K | ﹤0.01% |
15
+12
| +400% | +$40.8K |
|