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 |
Broadcom
AVGO
|
+$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 4 |
Walt Disney
DIS
|
+$14.5M |
| 5 |
Alibaba
BABA
|
+$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
Citizens
CIA
$274M
| $49K | ﹤0.01% |
+6,883
| New | +$49K |
|
852
MDU Resources
MDU
$3.32B
| $49K | ﹤0.01% |
+6,748
| New | +$49K |
|
853
Meritage Homes
MTH
$5.61B
| $49K | ﹤0.01% |
2,742
-7,606
| -74% | -$136K |
|
854
Radian Group
RDN
$4.76B
| $49K | ﹤0.01% |
3,954
+1,481
| +60% | +$18.4K |
|
|
JO
855
DELISTED
iPath Bloomberg Coffee Subindex Total Return ETN due June 24, 2038
JO
| $49K | ﹤0.01% |
2,509
-29,567
| -92% | -$577K |
|
856
BioMarin Pharmaceuticals
BMRN
$10.4B
| $48K | ﹤0.01% |
+592
| New | +$48K |
|
857
Ferrari
RACE
$85.1B
| $48K | ﹤0.01% |
+1,156
| New | +$48K |
|
858
Banco Santander
SAN
$149B
| $48K | ﹤0.01% |
11,552
+3,951
| +52% | +$16.4K |
|
859
Stellantis
STLA
$26.9B
| $48K | ﹤0.01% |
6,011
-22,665
| -79% | -$181K |
|
|
CNSL
860
DELISTED
Consolidated Communications Holdings, Inc.
CNSL
| $48K | ﹤0.01% |
+1,902
| New | +$48K |
|
|
AWH
861
DELISTED
Allied World Assurance Co Hld Lt
AWH
| $48K | ﹤0.01% |
1,399
+918
| +191% | +$31.5K |
|
862
Encore Capital Group
ECPG
$1.02B
| $47K | ﹤0.01% |
+1,845
| New | +$47K |
|
863
Flex
FLEX
$21.4B
| $47K | ﹤0.01% |
+5,189
| New | +$47K |
|
|
STKL
864
SunOpta
STKL
$740M
| $47K | ﹤0.01% |
10,625
-17,786
| -63% | -$78.7K |
|
865
Canadian Natural Resources
CNQ
$64.9B
| $46K | ﹤0.01% |
+3,537
| New | +$46K |
|
866
First Bancorp
FBP
$3.49B
| $46K | ﹤0.01% |
16,043
+15,985
| +27,560% | +$45.8K |
|
867
Gogo Inc
GOGO
$1.31B
| $46K | ﹤0.01% |
4,265
+1,196
| +39% | +$12.9K |
|
868
Jabil
JBL
$23B
| $46K | ﹤0.01% |
2,415
-1,579
| -40% | -$30.1K |
|
869
Synovus
SNV
$7.18B
| $46K | ﹤0.01% |
+1,625
| New | +$46K |
|
870
SPX Corp
SPXC
$9.21B
| $46K | ﹤0.01% |
3,063
+1,210
| +65% | +$18.2K |
|
|
NSTG
871
DELISTED
NanoString Technologies, Inc.
NSTG
| $46K | ﹤0.01% |
3,049
+1,593
| +109% | +$24K |
|
|
STML
872
DELISTED
Stemline Therapeutics, Inc.
STML
| $46K | ﹤0.01% |
+9,883
| New | +$46K |
|
|
RMP
873
DELISTED
Rice Midstream Partners LP
RMP
| $46K | ﹤0.01% |
+3,090
| New | +$46K |
|
|
MORE
874
DELISTED
Monogram Residential Trust, Inc.
MORE
| $46K | ﹤0.01% |
+4,758
| New | +$46K |
|
|
BHI
875
DELISTED
Baker Hughes
BHI
| $46K | ﹤0.01% |
1,057
-8,607
| -89% | -$375K |
|