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 | |
|---|---|---|---|---|---|---|
801
JetBlue
JBLU
$1.87B
| $75K | 0.01% |
4,564
+2,641
| +137% | +$43.4K |
|
802
Microchip Technology
MCHP
$34.7B
| $75K | 0.01% |
+2,984
| New | +$75K |
|
803
OSI Systems
OSIS
$4.03B
| $75K | 0.01% |
+1,293
| New | +$75K |
|
804
Verisk Analytics
VRSK
$36.8B
| $75K | 0.01% |
937
-2,702
| -74% | -$216K |
|
|
ZAGG
805
DELISTED
ZAGG Inc Common Stock (Delaware)
ZAGG
| $75K | 0.01% |
14,312
+11,880
| +488% | +$62.3K |
|
|
HW
806
DELISTED
Headwaters Inc
HW
| $75K | 0.01% |
+4,217
| New | +$75K |
|
|
ENV
807
DELISTED
ENVESTNET, INC.
ENV
| $75K | 0.01% |
2,281
+383
| +20% | +$12.6K |
|
|
ETP
808
DELISTED
Energy Transfer Partners L.p.
ETP
| $75K | 0.01% |
1,995
-19,446
| -91% | -$731K |
|
809
News Corp Class A
NWSA
$16.3B
| $74K | ﹤0.01% |
6,564
+6,104
| +1,327% | +$68.8K |
|
|
QIWI
810
DELISTED
QIWI PLC
QIWI
| $74K | ﹤0.01% |
5,677
-1,068
| -16% | -$13.9K |
|
|
ALFA
811
DELISTED
AlphaClone Alternative Alpha ETF
ALFA
| $74K | ﹤0.01% |
+2,216
| New | +$74K |
|
812
Liberty Latin America Class C
LILAK
$1.54B
| $73K | ﹤0.01% |
+2,406
| New | +$73K |
|
813
NRG Energy
NRG
$30.9B
| $73K | ﹤0.01% |
+4,927
| New | +$73K |
|
|
PTLA
814
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
| $73K | ﹤0.01% |
3,126
-13,951
| -82% | -$326K |
|
815
Global Partners
GLP
$1.76B
| $72K | ﹤0.01% |
+5,256
| New | +$72K |
|
816
iShares Russell 2000 Growth ETF
IWO
$12.7B
| $72K | ﹤0.01% |
+527
| New | +$72K |
|
|
ECOM
817
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $71K | ﹤0.01% |
4,955
+4,666
| +1,615% | +$66.9K |
|
818
Cardiff Oncology
CRDF
$138M
| $70K | ﹤0.01% |
217
-2
| -0.9% | -$645 |
|
819
DNOW Inc
DNOW
$1.64B
| $70K | ﹤0.01% |
3,880
-2,984
| -43% | -$53.8K |
|
820
Western Union
WU
$2.73B
| $70K | ﹤0.01% |
+3,693
| New | +$70K |
|
|
ARGS
821
DELISTED
Argos Therapeutics, Inc.
ARGS
| $70K | ﹤0.01% |
+577
| New | +$70K |
|
822
Gray Television
GTN
$575M
| $69K | ﹤0.01% |
+6,377
| New | +$69K |
|
|
EBSB
823
DELISTED
Meridian Bancorp, Inc.
EBSB
| $69K | ﹤0.01% |
4,717
-1,236
| -21% | -$18.1K |
|
|
LBY
824
DELISTED
Libbey, Inc.
LBY
| $69K | ﹤0.01% |
+4,354
| New | +$69K |
|
|
RATE
825
DELISTED
Bankrate Inc
RATE
| $69K | ﹤0.01% |
9,285
+3,349
| +56% | +$24.9K |
|