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 | |
|---|---|---|---|---|---|---|
1051
Aurinia Pharmaceuticals
AUPH
$1.65B
| $93K | ﹤0.01% |
14,057
-22,711
| -62% | -$150K |
|
1052
Ormat Technologies
ORA
$5.53B
| $93K | ﹤0.01% |
1,721
+626
| +57% | +$33.8K |
|
1053
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$162M
| $93K | ﹤0.01% |
1,784
-411
| -19% | -$21.4K |
|
1054
WD-40
WDFC
$2.85B
| $93K | ﹤0.01% |
+542
| New | +$93K |
|
|
CRZO
1055
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $93K | ﹤0.01% |
3,711
+2,332
| +169% | +$58.4K |
|
1056
Toro Company
TTC
$7.73B
| $92K | ﹤0.01% |
+1,549
| New | +$92K |
|
1057
iShares MSCI Malaysia ETF
EWM
$244M
| $91K | ﹤0.01% |
2,813
+1,513
| +116% | +$48.9K |
|
1058
ProShares UltraShort Euro
EUO
$33.6M
| $90K | ﹤0.01% |
+3,870
| New | +$90K |
|
1059
iShares MSCI Germany ETF
EWG
$2.39B
| $90K | ﹤0.01% |
+3,054
| New | +$90K |
|
1060
Exact Sciences
EXAS
$10.3B
| $90K | ﹤0.01% |
1,151
-11,157
| -91% | -$872K |
|
1061
Keysight
KEYS
$29.2B
| $90K | ﹤0.01% |
+1,360
| New | +$90K |
|
1062
Nokia
NOK
$24.2B
| $90K | ﹤0.01% |
16,301
-27,364
| -63% | -$151K |
|
1063
Waters Corp
WAT
$17.7B
| $90K | ﹤0.01% |
+465
| New | +$90K |
|
|
PRTY
1064
DELISTED
Party City Holdco Inc.
PRTY
| $90K | ﹤0.01% |
+6,659
| New | +$90K |
|
1065
Fortuna Silver Mines
FSM
$2.56B
| $89K | ﹤0.01% |
20,453
+696
| +4% | +$3.03K |
|
1066
MGIC Investment
MTG
$6.61B
| $89K | ﹤0.01% |
6,696
-477
| -7% | -$6.34K |
|
|
BOLD
1067
DELISTED
Audentes Therapeutics, Inc
BOLD
| $88K | ﹤0.01% |
+2,247
| New | +$88K |
|
1068
Virtu Financial
VIRT
$3.07B
| $87K | ﹤0.01% |
+4,293
| New | +$87K |
|
1069
Invesco DB Commodity Index Tracking Fund
DBC
$1.28B
| $86K | ﹤0.01% |
4,806
+4,500
| +1,471% | +$80.5K |
|
1070
GATX Corp
GATX
$6.12B
| $86K | ﹤0.01% |
998
-3,067
| -75% | -$264K |
|
1071
Haemonetics
HAE
$2.52B
| $86K | ﹤0.01% |
+756
| New | +$86K |
|
1072
iShares MSCI Saudi Arabia ETF
KSA
$560M
| $86K | ﹤0.01% |
2,890
-5,830
| -67% | -$173K |
|
1073
Medifast
MED
$152M
| $85K | ﹤0.01% |
+384
| New | +$85K |
|
|
TA
1074
DELISTED
TravelCenters of America LLC
TA
| $85K | ﹤0.01% |
+2,995
| New | +$85K |
|
1075
Cal-Maine
CALM
$5.37B
| $84K | ﹤0.01% |
1,752
-2,959
| -63% | -$142K |
|