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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ALTU
926
DELISTED
Altitude Acquisition Corp. Class A Common Stock
ALTU
| $144K | ﹤0.01% |
14,333
+2,085
| +17% | +$20.9K |
|
927
Outdoor Holding Company Common Stock
POWW
$187M
| $143K | ﹤0.01% |
67,226
+23,019
| +52% | +$49K |
|
928
Asure Software
ASUR
$220M
| $143K | ﹤0.01% |
+11,767
| New | +$143K |
|
929
Axalta
AXTA
$6.88B
| $143K | ﹤0.01% |
4,369
+2,631
| +151% | +$86.1K |
|
930
Vanguard World Funds Extended Duration ETF
EDV
$3.76B
| $143K | ﹤0.01% |
1,652
+1,612
| +4,030% | +$140K |
|
931
DURECT Corp
DRRX
$59.3M
| $142K | ﹤0.01% |
28,727
-79,800
| -74% | -$394K |
|
932
Par Pacific Holdings
PARR
$1.71B
| $141K | ﹤0.01% |
5,336
-15,415
| -74% | -$407K |
|
|
UCAR
933
U Power Ltd
UCAR
$10.1M
| $140K | ﹤0.01% |
+198
| New | +$140K |
|
934
KraneShares Global Carbon Strategy ETF
KRBN
$166M
| $139K | ﹤0.01% |
3,682
-8,617
| -70% | -$325K |
|
935
Miller Industries
MLR
$471M
| $139K | ﹤0.01% |
+3,931
| New | +$139K |
|
936
Ingevity
NGVT
$2.14B
| $139K | ﹤0.01% |
+2,397
| New | +$139K |
|
937
OSI Systems
OSIS
$4.03B
| $139K | ﹤0.01% |
1,184
-1,108
| -48% | -$130K |
|
938
PagerDuty
PD
$1.55B
| $139K | ﹤0.01% |
+6,207
| New | +$139K |
|
939
SPDR Portfolio S&P 500 Value ETF
SPYV
$28.4B
| $139K | ﹤0.01% |
3,225
-24,527
| -88% | -$1.06M |
|
940
Ethan Allen Interiors
ETD
$753M
| $138K | ﹤0.01% |
+4,886
| New | +$138K |
|
941
St. Joe Company
JOE
$3.05B
| $138K | ﹤0.01% |
2,870
-886
| -24% | -$42.6K |
|
942
Kayne Anderson Energy Infrastructure Fund
KYN
$2.06B
| $137K | ﹤0.01% |
16,882
-2,025
| -11% | -$16.4K |
|
|
DHC
943
Diversified Healthcare Trust
DHC
$1.09B
| $136K | ﹤0.01% |
60,708
+54,282
| +845% | +$122K |
|
944
Frontier Group Holdings
ULCC
$1.23B
| $136K | ﹤0.01% |
14,133
+10,962
| +346% | +$105K |
|
|
ONC
945
BeOne Medicines Ltd. American Depositary Shares
ONC
$36.9B
| $136K | ﹤0.01% |
+768
| New | +$136K |
|
946
Embecta
EMBC
$895M
| $135K | ﹤0.01% |
6,265
+2,855
| +84% | +$61.5K |
|
947
Direxion Daily Small Cap Bear 3x Shares
TZA
$278M
| $135K | ﹤0.01% |
5,138
-39,788
| -89% | -$1.05M |
|
948
2x Long VIX Futures ETF
UVIX
$426M
| $135K | ﹤0.01% |
304
+58
| +24% | +$25.8K |
|
949
Viper Energy
VNOM
$6.58B
| $135K | ﹤0.01% |
5,067
+4,869
| +2,459% | +$130K |
|
950
Cohu
COHU
$992M
| $134K | ﹤0.01% |
+3,237
| New | +$134K |
|