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 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
UNTD
651
DELISTED
UNITED ONLINE INC COM NEW
UNTD
| $121K | 0.01% |
11,068
+10,949
| +9,201% | +$120K |
|
652
Chord Energy
CHRD
$6.1B
| $120K | 0.01% |
12,927
+4,944
| +62% | +$45.9K |
|
|
WFT
653
DELISTED
Weatherford International plc
WFT
| $120K | 0.01% |
+21,738
| New | +$120K |
|
654
Honda
HMC
$44.4B
| $119K | 0.01% |
4,699
+2,375
| +102% | +$60.1K |
|
655
Liberty Global Class A
LBTYA
$3.93B
| $119K | 0.01% |
4,105
-7,087
| -63% | -$205K |
|
|
FMI
656
DELISTED
Foundation Medicine, Inc.
FMI
| $119K | 0.01% |
6,407
+4,684
| +272% | +$87K |
|
657
Molina Healthcare
MOH
$9.71B
| $118K | 0.01% |
2,368
+1,781
| +303% | +$88.7K |
|
658
RB Global
RBA
$21.6B
| $118K | 0.01% |
3,511
+3,335
| +1,895% | +$112K |
|
659
Avanos Medical
AVNS
$558M
| $117K | 0.01% |
3,613
-6,887
| -66% | -$223K |
|
660
Performance Food Group
PFGC
$16.3B
| $117K | 0.01% |
+4,376
| New | +$117K |
|
661
Graco
GGG
$14.1B
| $116K | 0.01% |
4,434
-5,814
| -57% | -$152K |
|
662
iShares US Financials ETF
IYF
$4.03B
| $116K | 0.01% |
2,710
+2,500
| +1,190% | +$107K |
|
|
LCI
663
DELISTED
Lannett Company, Inc.
LCI
| $116K | 0.01% |
+1,223
| New | +$116K |
|
664
Icon
ICLR
$12.9B
| $115K | 0.01% |
+1,654
| New | +$115K |
|
|
SCU
665
DELISTED
Sculptor Capital Management, Inc. Class A Common Stock
SCU
| $115K | 0.01% |
3,039
+2,967
| +4,121% | +$112K |
|
|
MLNX
666
DELISTED
Mellanox Technologies, Ltd.
MLNX
| $115K | 0.01% |
+2,398
| New | +$115K |
|
667
Banco Bilbao Vizcaya Argentaria
BBVA
$109B
| $114K | 0.01% |
+20,307
| New | +$114K |
|
668
Community Health Systems
CYH
$409M
| $114K | 0.01% |
9,477
-9,159
| -49% | -$110K |
|
669
Pembina Pipeline
PBA
$22.5B
| $114K | 0.01% |
3,762
-8,237
| -69% | -$250K |
|
670
Tenaris
TS
$18.5B
| $114K | 0.01% |
+3,966
| New | +$114K |
|
|
VWTR
671
DELISTED
Vidler Water Resouces, Inc. Common Stock
VWTR
| $114K | 0.01% |
12,067
+4,063
| +51% | +$38.4K |
|
672
FibroGen
FGEN
$46.5M
| $113K | 0.01% |
+277
| New | +$113K |
|
|
LVLT
673
DELISTED
Level 3 Communications Inc
LVLT
| $113K | 0.01% |
2,198
-6,103
| -74% | -$314K |
|
|
ATCO
674
DELISTED
Atlas Corp.
ATCO
| $112K | 0.01% |
8,026
+6,108
| +318% | +$85.2K |
|
675
United States Gasoline Fund
UGA
$78M
| $111K | 0.01% |
4,301
+525
| +14% | +$13.5K |
|