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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
Iron Mountain
IRM
$28.8B
| $48K | ﹤0.01% |
1,576
+729
| +86% | +$22.2K |
|
952
Sangamo Therapeutics
SGMO
$160M
| $48K | ﹤0.01% |
+8,624
| New | +$48K |
|
953
Tempest Therapeutics
TPST
$46.6M
| $48K | ﹤0.01% |
+2
| New | +$48K |
|
954
Cerus
CERS
$226M
| $47K | ﹤0.01% |
10,468
-3,152
| -23% | -$14.2K |
|
955
Gaming and Leisure Properties
GLPI
$13.6B
| $47K | ﹤0.01% |
+1,601
| New | +$47K |
|
|
JKS
956
JinkoSolar
JKS
$1.22B
| $47K | ﹤0.01% |
2,145
-1,498
| -41% | -$32.8K |
|
957
Leggett & Platt
LEG
$1.34B
| $47K | ﹤0.01% |
1,154
+932
| +420% | +$38K |
|
958
Petrobras
PBR
$81.6B
| $47K | ﹤0.01% |
11,000
| – | – |
|
959
SolarEdge
SEDG
$1.75B
| $47K | ﹤0.01% |
+2,058
| New | +$47K |
|
960
Universal Corp
UVV
$1.38B
| $47K | ﹤0.01% |
952
-353
| -27% | -$17.4K |
|
961
Technology Select Sector SPDR Fund
XLK
$86.6B
| $47K | ﹤0.01% |
1,192
+160
| +16% | +$6.31K |
|
|
ECYT
962
DELISTED
Endocyte, Inc. Common Stock
ECYT
| $47K | ﹤0.01% |
10,337
+9,999
| +2,958% | +$45.5K |
|
963
Ameren
AEE
$27.1B
| $46K | ﹤0.01% |
+1,105
| New | +$46K |
|
964
New Oriental
EDU
$8.93B
| $46K | ﹤0.01% |
2,297
-310
| -12% | -$6.21K |
|
965
LivePerson
LPSN
$91.8M
| $46K | ﹤0.01% |
6,209
+6,208
| +620,800% | +$46K |
|
|
HNGR
966
DELISTED
Hanger Inc.
HNGR
| $46K | ﹤0.01% |
3,425
+1,960
| +134% | +$26.3K |
|
|
RUSL
967
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $46K | ﹤0.01% |
1,729
-7,154
| -81% | -$190K |
|
|
WES
968
DELISTED
Western Gas Partners Lp
WES
| $46K | ﹤0.01% |
991
-874
| -47% | -$40.6K |
|
969
Hecla Mining
HL
$7.47B
| $45K | ﹤0.01% |
+22,990
| New | +$45K |
|
970
International Bancshares
IBOC
$4.4B
| $45K | ﹤0.01% |
1,806
+1,156
| +178% | +$28.8K |
|
971
US Global Jets ETF
JETS
$834M
| $45K | ﹤0.01% |
1,949
+1,353
| +227% | +$31.2K |
|
972
OneMain Financial
OMF
$7.22B
| $45K | ﹤0.01% |
+1,034
| New | +$45K |
|
973
Schwab US REIT ETF
SCHH
$8.46B
| $45K | ﹤0.01% |
2,432
+1,354
| +126% | +$25.1K |
|
|
NBSE
974
DELISTED
NeuBase Therapeutics, Inc. Common Stock
NBSE
| $45K | ﹤0.01% |
+41
| New | +$45K |
|
|
LM
975
DELISTED
Legg Mason, Inc.
LM
| $45K | ﹤0.01% |
+1,088
| New | +$45K |
|