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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
PLAN
501
DELISTED
Anaplan, Inc.
PLAN
| $342K | ﹤0.01% |
7,296
+3,875
| +113% | +$182K |
|
502
Chord Energy
CHRD
$5.94B
| $341K | ﹤0.01% |
98,649
+23,111
| +31% | +$79.9K |
|
|
MAG
503
DELISTED
MAG Silver
MAG
| $339K | ﹤0.01% |
31,982
+29,800
| +1,366% | +$316K |
|
|
JKS
504
JinkoSolar
JKS
$1.24B
| $338K | ﹤0.01% |
21,205
+13,478
| +174% | +$215K |
|
505
Solid Biosciences
SLDB
$410M
| $336K | ﹤0.01% |
+2,171
| New | +$336K |
|
506
B&G Foods
BGS
$362M
| $335K | ﹤0.01% |
17,753
-39,532
| -69% | -$746K |
|
507
LyondellBasell Industries
LYB
$17.5B
| $335K | ﹤0.01% |
3,755
-15,130
| -80% | -$1.35M |
|
508
Tradeweb Markets
TW
$25.2B
| $334K | ﹤0.01% |
9,055
+3,716
| +70% | +$137K |
|
509
Canadian Natural Resources
CNQ
$64.8B
| $333K | ﹤0.01% |
25,543
-12,236
| -32% | -$160K |
|
|
TUP
510
DELISTED
Tupperware Brands Corporation
TUP
| $331K | ﹤0.01% |
+20,868
| New | +$331K |
|
511
Cohu
COHU
$971M
| $329K | ﹤0.01% |
24,408
+24,203
| +11,806% | +$326K |
|
512
Ericsson
ERIC
$26.6B
| $329K | ﹤0.01% |
41,279
+5,467
| +15% | +$43.6K |
|
|
MRTX
513
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $328K | ﹤0.01% |
4,215
-19,860
| -82% | -$1.55M |
|
514
Nokia
NOK
$24.6B
| $327K | ﹤0.01% |
64,667
-83,914
| -56% | -$424K |
|
515
Deckers Outdoor
DECK
$17.1B
| $325K | ﹤0.01% |
13,254
-21,642
| -62% | -$531K |
|
516
Evolent Health
EVH
$1.09B
| $325K | ﹤0.01% |
45,265
+43,172
| +2,063% | +$310K |
|
517
FS KKR Capital
FSK
$4.99B
| $325K | ﹤0.01% |
+13,970
| New | +$325K |
|
518
Alcon
ALC
$38.9B
| $324K | ﹤0.01% |
5,575
+1,553
| +39% | +$90.3K |
|
519
Cloudflare
NET
$77.3B
| $324K | ﹤0.01% |
+17,472
| New | +$324K |
|
520
Post Holdings
POST
$5.7B
| $324K | ﹤0.01% |
4,689
-185
| -4% | -$12.8K |
|
521
Everest Group
EG
$14.2B
| $323K | ﹤0.01% |
+1,215
| New | +$323K |
|
|
IAA
522
DELISTED
IAA, Inc. Common Stock
IAA
| $323K | ﹤0.01% |
+7,748
| New | +$323K |
|
523
PDF Solutions
PDFS
$770M
| $322K | ﹤0.01% |
24,710
-7,313
| -23% | -$95.3K |
|
524
Black Stone Minerals
BSM
$2.6B
| $321K | ﹤0.01% |
22,559
+7,122
| +46% | +$101K |
|
|
WPX
525
DELISTED
WPX Energy, Inc.
WPX
| $321K | ﹤0.01% |
30,325
-33,053
| -52% | -$350K |
|