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 |
Invesco QQQ Trust
QQQ
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
801
Cooper-Standard Automotive
CPS
$688M
| $126K | ﹤0.01% |
2,685
+1,219
| +83% | +$57.2K |
|
802
Huntington Bancshares
HBAN
$25.7B
| $126K | ﹤0.01% |
9,937
+3,597
| +57% | +$45.6K |
|
803
iShares 3-7 Year Treasury Bond ETF
IEI
$16.9B
| $126K | ﹤0.01% |
+1,028
| New | +$126K |
|
804
Navigator Holdings
NVGS
$1.12B
| $126K | ﹤0.01% |
11,471
-17,059
| -60% | -$187K |
|
|
SA
805
Seabridge Gold
SA
$1.78B
| $126K | ﹤0.01% |
10,194
-44
| -0.4% | -$544 |
|
806
KNOT Offshore Partners
KNOP
$291M
| $125K | ﹤0.01% |
6,632
-8,377
| -56% | -$158K |
|
807
Rockwell Automation
ROK
$38.8B
| $125K | ﹤0.01% |
+714
| New | +$125K |
|
808
Thor Industries
THO
$5.92B
| $125K | ﹤0.01% |
2,012
-17,367
| -90% | -$1.08M |
|
|
APHA
809
DELISTED
Aphria Inc. Common Shares
APHA
| $125K | ﹤0.01% |
13,420
-159,060
| -92% | -$1.48M |
|
810
Gogo Inc
GOGO
$1.39B
| $124K | ﹤0.01% |
+27,624
| New | +$124K |
|
811
Welltower
WELL
$113B
| $124K | ﹤0.01% |
1,600
-13,002
| -89% | -$1.01M |
|
|
ATRS
812
DELISTED
Antares Pharma, Inc.
ATRS
| $124K | ﹤0.01% |
41,250
-1,291
| -3% | -$3.88K |
|
|
TCF
813
DELISTED
TCF Financial Corporation
TCF
| $124K | ﹤0.01% |
+6,038
| New | +$124K |
|
814
Antero Resources
AR
$9.94B
| $123K | ﹤0.01% |
+13,954
| New | +$123K |
|
815
Banc of California
BANC
$2.65B
| $123K | ﹤0.01% |
8,900
-13,154
| -60% | -$182K |
|
816
Cheniere Energy
LNG
$51.5B
| $123K | ﹤0.01% |
+1,802
| New | +$123K |
|
817
SPDR S&P Retail ETF
XRT
$438M
| $123K | ﹤0.01% |
2,738
-35,243
| -93% | -$1.58M |
|
818
Global Net Lease
GNL
$1.82B
| $122K | ﹤0.01% |
6,504
+4,124
| +173% | +$77.4K |
|
|
USX
819
DELISTED
U.S. Xpress Enterprises, Inc. Class A Common Stock
USX
| $122K | ﹤0.01% |
18,512
-8,781
| -32% | -$57.9K |
|
|
WRI
820
DELISTED
Weingarten Realty Investors
WRI
| $122K | ﹤0.01% |
4,183
+3,712
| +788% | +$108K |
|
821
Premier
PINC
$2.24B
| $121K | ﹤0.01% |
3,536
-5,895
| -63% | -$202K |
|
|
BLCM
822
DELISTED
Bellicum Pharmaceuticals, Inc.
BLCM
| $121K | ﹤0.01% |
3,613
+2,982
| +473% | +$99.9K |
|
|
DNR
823
DELISTED
Denbury Resources, Inc.
DNR
| $121K | ﹤0.01% |
59,048
-36,154
| -38% | -$74.1K |
|
|
GRA
824
DELISTED
W.R. Grace & Co.
GRA
| $121K | ﹤0.01% |
1,558
+1,375
| +751% | +$107K |
|
825
iShares US Healthcare ETF
IYH
$2.79B
| $120K | ﹤0.01% |
3,115
+2,615
| +523% | +$101K |
|