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
|
+$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 4 |
Alibaba
BABA
|
+$9.66M |
| 5 |
Intel
INTC
|
+$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.8M |
| 2 |
Gilead Sciences
GILD
|
+$31.2M |
| 3 |
Booking.com
BKNG
|
+$29M |
| 4 |
Amazon
AMZN
|
+$25.6M |
| 5 |
Baidu
BIDU
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
EPZM
776
DELISTED
Epizyme, Inc
EPZM
| $54K | 0.01% |
2,899
+2,633
| +990% | +$49K |
|
777
American Electric Power
AEP
$57.9B
| $53K | 0.01% |
+956
| New | +$53K |
|
778
AGCO
AGCO
$8.02B
| $53K | 0.01% |
1,113
-1,988
| -64% | -$94.7K |
|
779
ATI
ATI
$10.5B
| $53K | 0.01% |
1,771
+1,593
| +895% | +$47.7K |
|
780
Clean Harbors
CLH
$12.6B
| $53K | 0.01% |
+940
| New | +$53K |
|
781
Invesco Water Resources ETF
PHO
$2.2B
| $53K | 0.01% |
+2,159
| New | +$53K |
|
782
World Acceptance Corp
WRLD
$904M
| $53K | 0.01% |
733
+650
| +783% | +$47K |
|
|
TEN
783
DELISTED
Tenneco Inc. Class A Voting Common Stock
TEN
| $53K | 0.01% |
939
+58
| +7% | +$3.27K |
|
|
MNTA
784
DELISTED
Momenta Pharmaceuticals, Inc.
MNTA
| $53K | 0.01% |
3,522
+1,694
| +93% | +$25.5K |
|
|
GCAP
785
DELISTED
Gain Capital Holdings, Inc.
GCAP
| $53K | 0.01% |
+5,505
| New | +$53K |
|
|
ETP
786
DELISTED
Energy Transfer Partners, L.P.
ETP
| $53K | 0.01% |
+1,302
| New | +$53K |
|
|
PKT
787
DELISTED
PROCERA NETWORKS INC NEW COM STK (DE)
PKT
| $53K | 0.01% |
+5,665
| New | +$53K |
|
788
Autodesk
ADSK
$69B
| $52K | 0.01% |
+900
| New | +$52K |
|
789
Allstate
ALL
$52.7B
| $52K | 0.01% |
+743
| New | +$52K |
|
790
Graphic Packaging
GPK
$6.14B
| $52K | 0.01% |
3,637
+793
| +28% | +$11.3K |
|
791
Hain Celestial
HAIN
$176M
| $52K | 0.01% |
816
-3,154
| -79% | -$201K |
|
792
Hanesbrands
HBI
$2.21B
| $52K | 0.01% |
+1,562
| New | +$52K |
|
793
Itaú Unibanco
ITUB
$75.9B
| $52K | 0.01% |
11,542
+7,677
| +199% | +$34.6K |
|
|
ADAM
794
Adamas Trust, Inc. Common Stock
ADAM
$653M
| $52K | 0.01% |
+1,690
| New | +$52K |
|
795
Pegasystems
PEGA
$9.66B
| $52K | 0.01% |
4,814
+2,074
| +76% | +$22.4K |
|
796
RLI Corp
RLI
$6.08B
| $52K | 0.01% |
+1,994
| New | +$52K |
|
|
SVC
797
Service Properties Trust
SVC
$469M
| $52K | 0.01% |
1,611
+612
| +61% | +$19.8K |
|
798
Universal Insurance Holdings
UVE
$696M
| $52K | 0.01% |
2,040
+1,575
| +339% | +$40.1K |
|
799
Metallus
MTUS
$695M
| $52K | 0.01% |
1,986
-1,091
| -35% | -$28.6K |
|
|
AUY
800
DELISTED
Yamana Gold, Inc.
AUY
| $52K | 0.01% |
+14,746
| New | +$52K |
|