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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1876
Gulf Resources
GURE
$9.34M
| $1K | ﹤0.01% |
279
+100
| +56% | +$358 |
|
1877
HP
HPQ
$26.1B
| $1K | ﹤0.01% |
+100
| New | +$1K |
|
1878
Heron Therapeutics
HRTX
$193M
| $1K | ﹤0.01% |
83
-52,172
| -100% | -$629K |
|
1879
Identive
INVE
$85.9M
| $1K | ﹤0.01% |
378
+164
| +77% | +$434 |
|
1880
Natera
NTRA
$23.1B
| $1K | ﹤0.01% |
26
-3,050
| -99% | -$117K |
|
1881
Orion
OEC
$521M
| $1K | ﹤0.01% |
158
-237
| -60% | -$1.5K |
|
1882
Penske Automotive Group
PAG
$11.9B
| $1K | ﹤0.01% |
+29
| New | +$1K |
|
1883
Pebblebrook Hotel Trust
PEB
$1.38B
| $1K | ﹤0.01% |
+103
| New | +$1K |
|
1884
Peoples Bancorp
PEBO
$1.08B
| $1K | ﹤0.01% |
89
-532
| -86% | -$5.98K |
|
1885
ePlus
PLUS
$1.97B
| $1K | ﹤0.01% |
34
-132
| -80% | -$3.88K |
|
1886
Saia
SAIA
$8.33B
| $1K | ﹤0.01% |
13
-6,815
| -100% | -$524K |
|
1887
Sundial Growers
SNDL
$620M
| $1K | ﹤0.01% |
176
-1,704
| -91% | -$9.68K |
|
|
SOS
1888
SOS Limited
SOS
$16.5M
| $1K | ﹤0.01% |
+1
| New | +$1K |
|
1889
Stoneridge
SRI
$228M
| $1K | ﹤0.01% |
+68
| New | +$1K |
|
1890
Sensient Technologies
SXT
$4.52B
| $1K | ﹤0.01% |
+38
| New | +$1K |
|
|
TRVG
1891
trivago
TRVG
$238M
| $1K | ﹤0.01% |
104
-286
| -73% | -$2.75K |
|
1892
Unitil
UTL
$827M
| $1K | ﹤0.01% |
+27
| New | +$1K |
|
1893
VirnetX
VHC
$74.7M
| $1K | ﹤0.01% |
10
-2,375
| -100% | -$238K |
|
1894
Watts Water Technologies
WTS
$9.39B
| $1K | ﹤0.01% |
13
-613
| -98% | -$47.2K |
|
1895
Xenon Pharmaceuticals
XENE
$2.79B
| $1K | ﹤0.01% |
+126
| New | +$1K |
|
1896
Xeris Biopharma Holdings
XERS
$1.21B
| $1K | ﹤0.01% |
+473
| New | +$1K |
|
|
XHR
1897
Xenia Hotels & Resorts
XHR
$1.41B
| $1K | ﹤0.01% |
160
-2,742
| -94% | -$17.1K |
|
1898
Invesco S&P MidCap Low Volatility ETF
XMLV
$817M
| $1K | ﹤0.01% |
37
-138
| -79% | -$3.73K |
|
|
VRN
1899
DELISTED
Veren
VRN
| $1K | ﹤0.01% |
+769
| New | +$1K |
|
|
HTB
1900
HomeTrust Bancshares, Inc.
HTB
$713M
| $1K | ﹤0.01% |
+117
| New | +$1K |
|