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
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Crown Castle
CCI
$40.9B
| $347K | 0.02% |
3,470
-17,831
| -84% | -$1.78M |
|
477
West Pharmaceutical
WST
$18.2B
| $347K | 0.02% |
3,676
+3,592
| +4,276% | +$339K |
|
|
ALDR
478
DELISTED
Alder Biopharmaceuticals, Inc.
ALDR
| $347K | 0.02% |
30,369
+29,103
| +2,299% | +$333K |
|
|
SXCP
479
DELISTED
SunCoke Energy Partners, L.P.
SXCP
| $345K | 0.02% |
19,712
+8,326
| +73% | +$146K |
|
|
SAFM
480
DELISTED
Sanderson Farms Inc
SAFM
| $344K | 0.01% |
+2,981
| New | +$344K |
|
|
KS
481
DELISTED
KapStone Paper and Pack Corp.
KS
| $343K | 0.01% |
+16,664
| New | +$343K |
|
482
Zillow
ZG
$21B
| $340K | 0.01% |
6,966
+486
| +8% | +$23.7K |
|
|
LL
483
DELISTED
LL Flooring Holdings, Inc.
LL
| $340K | 0.01% |
+13,584
| New | +$340K |
|
|
AUY
484
DELISTED
Yamana Gold, Inc.
AUY
| $340K | 0.01% |
139,974
+113,334
| +425% | +$275K |
|
485
Entravision Communication
EVC
$227M
| $339K | 0.01% |
51,419
+39,876
| +345% | +$263K |
|
486
Teleflex
TFX
$5.75B
| $339K | 0.01% |
1,633
-17
| -1% | -$3.53K |
|
|
WMGI
487
DELISTED
Wright Medical Group Inc
WMGI
| $339K | 0.01% |
12,342
-15,408
| -56% | -$423K |
|
|
APU
488
DELISTED
AmeriGas Partners, L.P.
APU
| $339K | 0.01% |
+7,515
| New | +$339K |
|
489
Azenta
AZTA
$1.35B
| $338K | 0.01% |
15,624
+1,162
| +8% | +$25.1K |
|
490
Cedar Fair
FUN
$2.41B
| $338K | 0.01% |
+4,699
| New | +$338K |
|
491
Entergy
ETR
$38.8B
| $336K | 0.01% |
+8,772
| New | +$336K |
|
492
Ross Stores
ROST
$49.6B
| $336K | 0.01% |
5,832
+3,219
| +123% | +$185K |
|
493
Lands' End
LE
$441M
| $333K | 0.01% |
22,398
+19,966
| +821% | +$297K |
|
494
Sun Life Financial
SLF
$32.9B
| $333K | 0.01% |
+9,323
| New | +$333K |
|
495
BioCryst Pharmaceuticals
BCRX
$1.72B
| $331K | 0.01% |
59,614
+55,402
| +1,315% | +$308K |
|
496
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$90.1M
| $331K | 0.01% |
+3,878
| New | +$331K |
|
497
Pampa Energía
PAM
$3.08B
| $331K | 0.01% |
+5,637
| New | +$331K |
|
498
Teekay
TK
$734M
| $331K | 0.01% |
49,710
+46,805
| +1,611% | +$312K |
|
499
Babcock & Wilcox
BW
$218M
| $330K | 0.01% |
2,814
+2,678
| +1,969% | +$314K |
|
500
Molina Healthcare
MOH
$9.51B
| $330K | 0.01% |
4,775
-16,034
| -77% | -$1.11M |
|