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 | |
|---|---|---|---|---|---|---|
|
SXE
1176
DELISTED
Southcross Energy Partners, L.P.
SXE
| $17K | ﹤0.01% |
8,850
+7,267
| +459% | +$14K |
|
1177
Barnes & Noble Education
BNED
$277M
| $16K | ﹤0.01% |
16
-4
| -20% | -$4K |
|
1178
Box
BOX
$4.7B
| $16K | ﹤0.01% |
1,605
+1,052
| +190% | +$10.5K |
|
1179
Cerus
CERS
$236M
| $16K | ﹤0.01% |
+2,597
| New | +$16K |
|
1180
Curtiss-Wright
CW
$19.2B
| $16K | ﹤0.01% |
196
| – | – |
|
1181
Darling Ingredients
DAR
$4.97B
| $16K | ﹤0.01% |
1,077
-10,225
| -90% | -$152K |
|
1182
CGI
GIB
$20.8B
| $16K | ﹤0.01% |
376
+152
| +68% | +$6.47K |
|
1183
Identive
INVE
$85.9M
| $16K | ﹤0.01% |
9,099
-150
| -2% | -$264 |
|
1184
Kodak
KODK
$486M
| $16K | ﹤0.01% |
1,026
-2,852
| -74% | -$44.5K |
|
1185
Lipocine
LPCN
$16.1M
| $16K | ﹤0.01% |
320
-17
| -5% | -$850 |
|
1186
Simpson Manufacturing
SSD
$7.86B
| $16K | ﹤0.01% |
+406
| New | +$16K |
|
1187
STMicroelectronics
STM
$23.1B
| $16K | ﹤0.01% |
2,878
+1,978
| +220% | +$11K |
|
|
VRN
1188
DELISTED
Veren
VRN
| $16K | ﹤0.01% |
1,036
+1,004
| +3,138% | +$15.5K |
|
|
TXNM
1189
TXNM Energy, Inc.
TXNM
$5.99B
| $16K | ﹤0.01% |
+470
| New | +$16K |
|
|
GASL
1190
DELISTED
Direxion Daily Natural Gas Related Bull 3X Shares
GASL
| $16K | ﹤0.01% |
+1
| New | +$16K |
|
|
PHH
1191
DELISTED
PHH Corporation
PHH
| $16K | ﹤0.01% |
1,271
-1,030
| -45% | -$13K |
|
|
RPXC
1192
DELISTED
RPX Corporation
RPXC
| $16K | ﹤0.01% |
1,801
+1,634
| +978% | +$14.5K |
|
|
FTR
1193
DELISTED
Frontier Communications Corp.
FTR
| $16K | ﹤0.01% |
+220
| New | +$16K |
|
|
FDML
1194
DELISTED
Federal-Mogul Holdings Corporation
FDML
| $16K | ﹤0.01% |
+2,038
| New | +$16K |
|
1195
AXIS Capital
AXS
$7.75B
| $15K | ﹤0.01% |
+282
| New | +$15K |
|
1196
ProShares Trust UltraShort MSCI Emerging Markets
EEV
$3M
| $15K | ﹤0.01% |
169
-985
| -85% | -$87.4K |
|
1197
iShares S&P 500 Growth ETF
IVW
$65.4B
| $15K | ﹤0.01% |
544
-2,568
| -83% | -$70.8K |
|
1198
Liberty Latin America Class A
LILA
$1.5B
| $15K | ﹤0.01% |
+505
| New | +$15K |
|
1199
McEwen Inc.
MUX
$748M
| $15K | ﹤0.01% |
+400
| New | +$15K |
|
1200
OneSpan
OSPN
$588M
| $15K | ﹤0.01% |
916
-955
| -51% | -$15.6K |
|