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 | |
|---|---|---|---|---|---|---|
|
FBR
926
DELISTED
Fibria Celulose Sa
FBR
| $52K | ﹤0.01% |
+3,859
| New | +$52K |
|
927
Ally Financial
ALLY
$12.7B
| $51K | ﹤0.01% |
+2,526
| New | +$51K |
|
928
Quest Diagnostics
DGX
$20.5B
| $51K | ﹤0.01% |
+843
| New | +$51K |
|
929
Global Partners
GLP
$1.77B
| $51K | ﹤0.01% |
+1,807
| New | +$51K |
|
930
Nabors Industries
NBR
$619M
| $51K | ﹤0.01% |
+108
| New | +$51K |
|
931
Schwab U.S Small- Cap ETF
SCHA
$19B
| $51K | ﹤0.01% |
4,032
-3,536
| -47% | -$44.7K |
|
932
Zumiez
ZUMZ
$356M
| $51K | ﹤0.01% |
3,272
+3,068
| +1,504% | +$47.8K |
|
|
PER
933
DELISTED
SANDRIDGE PERMIAN TRUST
PER
| $51K | ﹤0.01% |
12,134
+3,854
| +47% | +$16.2K |
|
|
SNI
934
DELISTED
Scripps Networks Interactive, Inc Common Class A
SNI
| $51K | ﹤0.01% |
+1,044
| New | +$51K |
|
|
TRNX
935
DELISTED
TORNIER N V SHARES (NLD)
TRNX
| $51K | ﹤0.01% |
2,510
-325
| -11% | -$6.6K |
|
936
CorMedix
CRMD
$977M
| $50K | ﹤0.01% |
5,038
-2,291
| -31% | -$22.7K |
|
937
Herc Holdings
HRI
$4.43B
| $50K | ﹤0.01% |
1,008
-4,172
| -81% | -$207K |
|
938
Inovio Pharmaceuticals
INO
$141M
| $50K | ﹤0.01% |
+729
| New | +$50K |
|
939
Kellanova
K
$27.5B
| $50K | ﹤0.01% |
803
-2,378
| -75% | -$148K |
|
940
Masimo
MASI
$7.94B
| $50K | ﹤0.01% |
+1,311
| New | +$50K |
|
|
EJ
941
DELISTED
E HOUSE (CHINA) HOLDINGS LIMITED
EJ
| $50K | ﹤0.01% |
8,542
-30,340
| -78% | -$178K |
|
942
Blackbaud
BLKB
$3.33B
| $49K | ﹤0.01% |
883
+161
| +22% | +$8.93K |
|
943
Celldex Therapeutics
CLDX
$1.67B
| $49K | ﹤0.01% |
312
+26
| +9% | +$4.08K |
|
944
Flotek Industries
FTK
$331M
| $49K | ﹤0.01% |
493
-405
| -45% | -$40.3K |
|
945
Gen Digital
GEN
$18B
| $49K | ﹤0.01% |
+2,563
| New | +$49K |
|
946
GameStop
GME
$11.1B
| $49K | ﹤0.01% |
4,776
-21,480
| -82% | -$220K |
|
947
iShares North American Natural Resources ETF
IGE
$625M
| $49K | ﹤0.01% |
+1,689
| New | +$49K |
|
948
SiriusPoint
SPNT
$2.18B
| $49K | ﹤0.01% |
+3,673
| New | +$49K |
|
|
MRGE
949
DELISTED
MERGE HEALTHCARE INC COM STK (WI)
MRGE
| $49K | ﹤0.01% |
6,965
+6,903
| +11,134% | +$48.6K |
|
950
Ardmore Shipping
ASC
$502M
| $48K | ﹤0.01% |
4,047
+3,793
| +1,493% | +$45K |
|