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
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
Direxion Daily Energy Bear 2X Shares
ERY
$22.1M
| $191K | ﹤0.01% |
+295
| New | +$191K |
|
652
Reading International Class A
RDI
$35M
| $191K | ﹤0.01% |
13,140
+7,780
| +145% | +$113K |
|
653
Vericel Corp
VCEL
$1.58B
| $191K | ﹤0.01% |
+10,979
| New | +$191K |
|
654
Mid-America Apartment Communities
MAA
$16.6B
| $190K | ﹤0.01% |
+1,992
| New | +$190K |
|
|
AVEO
655
DELISTED
AVEO Pharmaceuticals, Inc.
AVEO
| $190K | ﹤0.01% |
+11,929
| New | +$190K |
|
|
SOHU
656
Sohu.com
SOHU
$474M
| $189K | ﹤0.01% |
10,901
+9,392
| +622% | +$163K |
|
657
Tilray
TLRY
$1.2B
| $189K | ﹤0.01% |
+2,680
| New | +$189K |
|
|
TTM
658
DELISTED
Tata Motors Limited
TTM
| $188K | ﹤0.01% |
15,502
+11,878
| +328% | +$144K |
|
|
CBPO
659
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $188K | ﹤0.01% |
2,480
-6,528
| -72% | -$495K |
|
660
ProShares Short 20+ Year Treasury ETF
TBF
$69.2M
| $187K | ﹤0.01% |
8,366
-12,031
| -59% | -$269K |
|
|
NIHD
661
DELISTED
NII Holdings, Inc. Common Stock
NIHD
| $187K | ﹤0.01% |
42,424
-57,231
| -57% | -$252K |
|
662
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$249M
| $185K | ﹤0.01% |
238
+202
| +561% | +$157K |
|
|
PRMW
663
DELISTED
Primo Water Corporation
PRMW
| $185K | ﹤0.01% |
13,261
+13,110
| +8,682% | +$183K |
|
664
Onto Innovation
ONTO
$5.2B
| $184K | ﹤0.01% |
6,738
-2,938
| -30% | -$80.2K |
|
665
Simpson Manufacturing
SSD
$7.97B
| $182K | ﹤0.01% |
3,363
+3,015
| +866% | +$163K |
|
|
ZUO
666
DELISTED
Zuora, Inc.
ZUO
| $182K | ﹤0.01% |
10,048
+1,652
| +20% | +$29.9K |
|
667
Omeros
OMER
$291M
| $181K | ﹤0.01% |
16,253
-24,534
| -60% | -$273K |
|
668
ProShares Short QQQ
PSQ
$542M
| $180K | ﹤0.01% |
1,050
+114
| +12% | +$19.5K |
|
669
Sonoco
SON
$4.54B
| $180K | ﹤0.01% |
3,392
-2,730
| -45% | -$145K |
|
670
ProShares Ultra Financials
UYG
$865M
| $180K | ﹤0.01% |
5,522
+5,188
| +1,553% | +$169K |
|
671
Apyx Medical
APYX
$74.5M
| $179K | ﹤0.01% |
27,646
+27,602
| +62,732% | +$179K |
|
|
GSKY
672
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
| $179K | ﹤0.01% |
18,721
+14,722
| +368% | +$141K |
|
673
SAP
SAP
$303B
| $177K | ﹤0.01% |
1,781
-17,185
| -91% | -$1.71M |
|
|
FIT
674
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $176K | ﹤0.01% |
35,577
+17,562
| +97% | +$86.9K |
|
675
Suburban Propane Partners
SPH
$1.2B
| $175K | ﹤0.01% |
9,119
+7,485
| +458% | +$144K |
|