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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SPWR
1101
DELISTED
SunPower Corporation Common Stock
SPWR
| $43K | ﹤0.01% |
+13,340
| New | +$43K |
|
|
CBAY
1102
DELISTED
Cymabay Therapeutics
CBAY
| $43K | ﹤0.01% |
5,497
+1,593
| +41% | +$12.5K |
|
|
WPX
1103
DELISTED
WPX Energy, Inc.
WPX
| $43K | ﹤0.01% |
3,866
-892
| -19% | -$9.92K |
|
|
INST
1104
DELISTED
Instructure, Inc.
INST
| $43K | ﹤0.01% |
1,163
-310
| -21% | -$11.5K |
|
|
WAGE
1105
DELISTED
WageWorks, Inc.
WAGE
| $43K | ﹤0.01% |
1,616
+466
| +41% | +$12.4K |
|
|
NSU
1106
DELISTED
Nevsun Resources Ltd.
NSU
| $43K | ﹤0.01% |
+9,835
| New | +$43K |
|
1107
ProShares Ultra Energy
DIG
$72.2M
| $42K | ﹤0.01% |
+1,460
| New | +$42K |
|
1108
FS KKR Capital
FSK
$4.98B
| $42K | ﹤0.01% |
2,036
-6,538
| -76% | -$135K |
|
1109
Itron
ITRI
$5.41B
| $42K | ﹤0.01% |
+894
| New | +$42K |
|
|
JWN
1110
DELISTED
Nordstrom
JWN
| $42K | ﹤0.01% |
+908
| New | +$42K |
|
|
LOMA
1111
Loma Negra
LOMA
$939M
| $42K | ﹤0.01% |
3,786
+990
| +35% | +$11K |
|
1112
M&T Bank
MTB
$31B
| $42K | ﹤0.01% |
+297
| New | +$42K |
|
1113
Pinnacle West Capital
PNW
$10.6B
| $42K | ﹤0.01% |
+500
| New | +$42K |
|
1114
ProShares Ultra Health Care
RXL
$68.2M
| $42K | ﹤0.01% |
1,872
-3,256
| -63% | -$73.1K |
|
1115
Western Midstream Partners
WES
$14.6B
| $42K | ﹤0.01% |
1,522
-12,183
| -89% | -$336K |
|
|
WIN
1116
DELISTED
Windstream Holdings Inc
WIN
| $42K | ﹤0.01% |
20,359
+18,799
| +1,205% | +$38.8K |
|
1117
Blackstone Mortgage Trust
BXMT
$3.41B
| $41K | ﹤0.01% |
1,309
-2,444
| -65% | -$76.6K |
|
1118
Cadiz
CDZI
$295M
| $41K | ﹤0.01% |
4,075
-3,167
| -44% | -$31.9K |
|
1119
Civitas Resources
CIVI
$3.13B
| $41K | ﹤0.01% |
2,017
+1,536
| +319% | +$31.2K |
|
|
CBIO
1120
Crescent Biopharma, Inc. Common Stock
CBIO
$170M
| $41K | ﹤0.01% |
+44
| New | +$41K |
|
1121
Global Net Lease
GNL
$1.81B
| $41K | ﹤0.01% |
+2,380
| New | +$41K |
|
1122
Hecla Mining
HL
$7.47B
| $41K | ﹤0.01% |
+17,686
| New | +$41K |
|
1123
Imunon
IMNN
$14.1M
| $41K | ﹤0.01% |
+152
| New | +$41K |
|
1124
Motorcar Parts of America
MPAA
$284M
| $41K | ﹤0.01% |
2,477
-8,284
| -77% | -$137K |
|
1125
SIGA Technologies
SIGA
$624M
| $41K | ﹤0.01% |
5,316
+1,635
| +44% | +$12.6K |
|