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 |
Apple
AAPL
|
+$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$38.8M |
| 4 |
Amazon
AMZN
|
+$38.6M |
| 5 |
Tesla
TSLA
|
+$36M |
Top Sells
| 1 |
Alibaba
BABA
|
+$46.4M |
| 2 |
Boeing
BA
|
+$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
NVIDIA
NVDA
|
+$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
801
Vanguard Total World Stock ETF
VT
$52.2B
| $167K | ﹤0.01% |
2,072
-4,186
| -67% | -$337K |
|
|
FXS
802
DELISTED
Invesco CurrencyShares Swedish Krona Trust
FXS
| $167K | ﹤0.01% |
+1,700
| New | +$167K |
|
|
PEI
803
DELISTED
Pennsylvania Real Estate Investment Trust
PEI
| $166K | ﹤0.01% |
2,083
+983
| +89% | +$78.3K |
|
804
Avnet
AVT
$4.45B
| $164K | ﹤0.01% |
+3,868
| New | +$164K |
|
805
Calavo Growers
CVGW
$485M
| $164K | ﹤0.01% |
+1,820
| New | +$164K |
|
|
CEQP
806
DELISTED
Crestwood Equity Partners LP
CEQP
| $164K | ﹤0.01% |
+5,340
| New | +$164K |
|
|
SIOX
807
DELISTED
Sio Gene Therapies Inc. Common Stock
SIOX
| $164K | ﹤0.01% |
32,130
-32,917
| -51% | -$168K |
|
|
KDMN
808
DELISTED
Kadmon Holdings, Inc.
KDMN
| $164K | ﹤0.01% |
36,394
+33,043
| +986% | +$149K |
|
809
Rogers Communications
RCI
$19.3B
| $163K | ﹤0.01% |
+3,296
| New | +$163K |
|
810
Artivion
AORT
$2.05B
| $162K | ﹤0.01% |
+6,010
| New | +$162K |
|
811
Invesco
IVZ
$9.81B
| $162K | ﹤0.01% |
+9,048
| New | +$162K |
|
812
Spirit AeroSystems
SPR
$4.82B
| $162K | ﹤0.01% |
+2,233
| New | +$162K |
|
813
Enterprise Products Partners
EPD
$68.3B
| $161K | ﹤0.01% |
+5,750
| New | +$161K |
|
814
ODP
ODP
$642M
| $161K | ﹤0.01% |
+5,911
| New | +$161K |
|
|
DHC
815
Diversified Healthcare Trust
DHC
$1.04B
| $160K | ﹤0.01% |
+18,982
| New | +$160K |
|
816
CryoPort
CYRX
$503M
| $159K | ﹤0.01% |
+9,706
| New | +$159K |
|
817
General Dynamics
GD
$86.8B
| $159K | ﹤0.01% |
+904
| New | +$159K |
|
818
Idexx Laboratories
IDXX
$52.2B
| $159K | ﹤0.01% |
+611
| New | +$159K |
|
819
KeyCorp
KEY
$21B
| $159K | ﹤0.01% |
7,900
-18,428
| -70% | -$371K |
|
|
ADMS
820
DELISTED
Adamas Pharmaceuticals, Inc.
ADMS
| $159K | ﹤0.01% |
42,188
+28,197
| +202% | +$106K |
|
821
Arbor Realty Trust
ABR
$2.28B
| $158K | ﹤0.01% |
+11,048
| New | +$158K |
|
|
CMBT
822
CMB.TECH NV
CMBT
$2.86B
| $157K | ﹤0.01% |
12,528
+11,660
| +1,343% | +$146K |
|
823
Antero Resources
AR
$9.94B
| $156K | ﹤0.01% |
55,064
+54,193
| +6,222% | +$154K |
|
824
Omeros
OMER
$290M
| $156K | ﹤0.01% |
+11,097
| New | +$156K |
|
825
Prothena Corp
PRTA
$449M
| $156K | ﹤0.01% |
9,874
-7,448
| -43% | -$118K |
|