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 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
eHealth
EHTH
$119M
| $213K | 0.01% |
8,926
-21,503
| -71% | -$513K |
|
627
Exact Sciences
EXAS
$10.2B
| $213K | 0.01% |
4,523
-4,789
| -51% | -$226K |
|
628
abrdn Physical Gold Shares ETF
SGOL
$5.78B
| $213K | 0.01% |
17,210
-6,760
| -28% | -$83.7K |
|
629
Encompass Health
EHC
$12.7B
| $210K | 0.01% |
5,700
+3,221
| +130% | +$119K |
|
630
IAC Inc
IAC
$2.92B
| $210K | 0.01% |
10,027
+4,264
| +74% | +$89.3K |
|
|
LGF.A
631
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $209K | 0.01% |
6,274
+820
| +15% | +$27.3K |
|
|
MULE
632
DELISTED
MuleSoft, Inc.
MULE
| $209K | 0.01% |
+10,382
| New | +$209K |
|
633
Karyopharm Therapeutics
KPTI
$54.2M
| $208K | 0.01% |
+1,267
| New | +$208K |
|
634
NGL Energy Partners
NGL
$752M
| $208K | 0.01% |
18,012
+12,065
| +203% | +$139K |
|
|
CVA
635
DELISTED
Covanta Holding Corporation
CVA
| $207K | 0.01% |
13,970
+12,161
| +672% | +$180K |
|
636
Cars.com
CARS
$830M
| $206K | 0.01% |
7,743
+6,070
| +363% | +$161K |
|
637
Willis Towers Watson
WTW
$32.4B
| $205K | 0.01% |
1,333
-2,554
| -66% | -$393K |
|
638
iShares US Oil Equipment & Services ETF
IEZ
$114M
| $203K | 0.01% |
5,743
+2,259
| +65% | +$79.9K |
|
639
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$717M
| $201K | 0.01% |
118
-95
| -45% | -$162K |
|
640
Methanex
MEOH
$3.02B
| $201K | 0.01% |
4,001
+3,188
| +392% | +$160K |
|
|
STAY
641
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
| $201K | 0.01% |
+10,090
| New | +$201K |
|
642
HEICO
HEI
$44.2B
| $200K | 0.01% |
+4,369
| New | +$200K |
|
|
BFYT
643
DELISTED
Benefytt Technologies, Inc. Class A Common Stock
BFYT
| $200K | 0.01% |
13,825
+12,555
| +989% | +$182K |
|
644
Esperion Therapeutics
ESPR
$506M
| $197K | 0.01% |
3,943
+3,843
| +3,843% | +$192K |
|
|
CBIO
645
Crescent Biopharma, Inc. Common Stock
CBIO
$180M
| $197K | 0.01% |
141
+122
| +642% | +$170K |
|
|
NVTA
646
DELISTED
Invitae Corporation
NVTA
| $197K | 0.01% |
21,113
-362
| -2% | -$3.38K |
|
|
ZOES
647
DELISTED
Zoe's Kitchen, Inc.
ZOES
| $197K | 0.01% |
15,643
+15,243
| +3,811% | +$192K |
|
|
STOR
648
DELISTED
STORE Capital Corporation
STOR
| $196K | 0.01% |
7,910
-8,048
| -50% | -$199K |
|
649
Apogee Enterprises
APOG
$927M
| $195K | 0.01% |
4,059
+3,880
| +2,168% | +$186K |
|
650
New Oriental
EDU
$8.19B
| $195K | 0.01% |
2,213
-6,053
| -73% | -$533K |
|