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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
876
CRH
CRH
$76.8B
| $150K | ﹤0.01% |
4,591
-5,703
| -55% | -$186K |
|
877
Cytosorbents Corp
CTSO
$59.8M
| $150K | ﹤0.01% |
11,691
-2,194
| -16% | -$28.2K |
|
878
National Fuel Gas
NFG
$7.95B
| $150K | ﹤0.01% |
2,688
+2,520
| +1,500% | +$141K |
|
|
ENV
879
DELISTED
ENVESTNET, INC.
ENV
| $149K | ﹤0.01% |
2,452
-11,719
| -83% | -$712K |
|
880
Dolby
DLB
$6.91B
| $148K | ﹤0.01% |
+2,124
| New | +$148K |
|
|
HIMX
881
Himax Technologies
HIMX
$1.45B
| $148K | ﹤0.01% |
25,226
-24,458
| -49% | -$143K |
|
882
MasterCraft Boat Holdings
MCFT
$378M
| $148K | ﹤0.01% |
4,142
-4,408
| -52% | -$158K |
|
883
ProShares Ultra Health Care
RXL
$68.2M
| $148K | ﹤0.01% |
5,128
+2,064
| +67% | +$59.6K |
|
884
Syndax Pharmaceuticals
SNDX
$1.41B
| $148K | ﹤0.01% |
18,438
+17,941
| +3,610% | +$144K |
|
885
Surmodics
SRDX
$461M
| $148K | ﹤0.01% |
1,991
-7,160
| -78% | -$532K |
|
886
TopBuild
BLD
$12B
| $147K | ﹤0.01% |
2,602
+2,286
| +723% | +$129K |
|
887
Global X MSCI China Consumer Discretionary ETF
CHIQ
$249M
| $147K | ﹤0.01% |
9,551
-1,340
| -12% | -$20.6K |
|
888
Spectrum Brands
SPB
$1.33B
| $147K | ﹤0.01% |
1,969
-120
| -6% | -$8.96K |
|
889
TechTarget
TTGT
$429M
| $146K | ﹤0.01% |
7,519
-19,801
| -72% | -$384K |
|
890
Goosehead Insurance
GSHD
$2.05B
| $145K | ﹤0.01% |
+4,309
| New | +$145K |
|
|
VCRA
891
DELISTED
VOCERA COMMUNICATIONS, INC.
VCRA
| $145K | ﹤0.01% |
3,991
+1,536
| +63% | +$55.8K |
|
892
EchoStar
SATS
$22.2B
| $144K | ﹤0.01% |
3,835
-3,576
| -48% | -$134K |
|
893
Wingstop
WING
$7.67B
| $144K | ﹤0.01% |
2,114
-24,054
| -92% | -$1.64M |
|
894
Alarm.com
ALRM
$2.82B
| $142K | ﹤0.01% |
2,484
-5,750
| -70% | -$329K |
|
|
XLRN
895
DELISTED
Acceleron Pharma Inc.
XLRN
| $142K | ﹤0.01% |
2,488
-16,366
| -87% | -$934K |
|
|
SPN
896
DELISTED
Superior Energy Services, Inc.
SPN
| $142K | ﹤0.01% |
14,680
+13,297
| +961% | +$129K |
|
897
Axon Enterprise
AXON
$59B
| $141K | ﹤0.01% |
+2,063
| New | +$141K |
|
898
Green Plains
GPRE
$641M
| $141K | ﹤0.01% |
8,219
+6,421
| +357% | +$110K |
|
899
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$248M
| $141K | ﹤0.01% |
36
-19
| -35% | -$74.4K |
|
900
Ooma
OOMA
$353M
| $141K | ﹤0.01% |
+8,541
| New | +$141K |
|