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 | |
|---|---|---|---|---|---|---|
1601
Hudbay
HBM
$5.35B
| $14K | ﹤0.01% |
2,810
+1,397
| +99% | +$6.96K |
|
1602
Lincoln Electric
LECO
$13.2B
| $14K | ﹤0.01% |
+158
| New | +$14K |
|
1603
Lloyds Banking Group
LYG
$67B
| $14K | ﹤0.01% |
4,886
-336
| -6% | -$963 |
|
1604
Marcus & Millichap
MMI
$1.26B
| $14K | ﹤0.01% |
410
+168
| +69% | +$5.74K |
|
1605
Maximus
MMS
$5.05B
| $14K | ﹤0.01% |
227
-276
| -55% | -$17K |
|
1606
Qualcomm
QCOM
$175B
| $14K | ﹤0.01% |
200
-186,837
| -100% | -$13.1M |
|
1607
ProShares Ultra Financials
UYG
$885M
| $14K | ﹤0.01% |
+334
| New | +$14K |
|
1608
Werner Enterprises
WERN
$1.68B
| $14K | ﹤0.01% |
417
-1,645
| -80% | -$55.2K |
|
|
NAGE
1609
Niagen Bioscience, Inc. Common Stock
NAGE
$766M
| $14K | ﹤0.01% |
+3,264
| New | +$14K |
|
|
BITA
1610
DELISTED
Bitauto Holdings Limited
BITA
| $14K | ﹤0.01% |
612
-29,704
| -98% | -$680K |
|
1611
Criteo
CRTO
$1.15B
| $13K | ﹤0.01% |
588
-505
| -46% | -$11.2K |
|
1612
CVB Financial
CVBF
$2.77B
| $13K | ﹤0.01% |
603
-1,239
| -67% | -$26.7K |
|
1613
Gold Resource Corp
GORO
$133M
| $13K | ﹤0.01% |
+2,640
| New | +$13K |
|
1614
Hallador Energy
HNRG
$763M
| $13K | ﹤0.01% |
2,208
+1,227
| +125% | +$7.22K |
|
1615
SPDR S&P Capital Markets ETF
KCE
$606M
| $13K | ﹤0.01% |
232
| – | – |
|
1616
NatWest
NWG
$58.2B
| $13K | ﹤0.01% |
+1,971
| New | +$13K |
|
1617
Sensient Technologies
SXT
$4.52B
| $13K | ﹤0.01% |
+182
| New | +$13K |
|
|
XIN
1618
DELISTED
Xinyuan Real Estate
XIN
| $13K | ﹤0.01% |
303
+6
| +2% | +$257 |
|
|
SPPI
1619
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $13K | ﹤0.01% |
800
-6,894
| -90% | -$112K |
|
1620
Anavex Life Sciences
AVXL
$805M
| $12K | ﹤0.01% |
4,549
-2,093
| -32% | -$5.52K |
|
1621
Cinemark Holdings
CNK
$3.25B
| $12K | ﹤0.01% |
+302
| New | +$12K |
|
1622
Eldorado Gold
EGO
$5.7B
| $12K | ﹤0.01% |
2,813
-740
| -21% | -$3.16K |
|
1623
Energy Recovery
ERII
$764M
| $12K | ﹤0.01% |
+1,368
| New | +$12K |
|
1624
Greif
GEF
$3.59B
| $12K | ﹤0.01% |
+228
| New | +$12K |
|
1625
Harmony Gold Mining
HMY
$9.34B
| $12K | ﹤0.01% |
7,690
+2,582
| +51% | +$4.03K |
|