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 | |
|---|---|---|---|---|---|---|
151
Tyson Foods
TSN
$20B
| $2.24M | ﹤0.01% |
37,540
-14,040
| -27% | -$838K |
|
152
US Bancorp
USB
$76.5B
| $2.18M | ﹤0.01% |
+59,287
| New | +$2.18M |
|
153
Blackstone
BX
$133B
| $2.14M | ﹤0.01% |
+37,806
| New | +$2.14M |
|
154
iShares Gold Trust
IAU
$52B
| $2.11M | ﹤0.01% |
62,164
+24,751
| +66% | +$841K |
|
|
INOV
155
DELISTED
Inovalon Holdings, Inc. Class A Common Stock
INOV
| $2.1M | ﹤0.01% |
109,254
+105,576
| +2,870% | +$2.03M |
|
156
BILL Holdings
BILL
$4.75B
| $2.09M | ﹤0.01% |
23,221
+22,943
| +8,253% | +$2.07M |
|
157
DexCom
DXCM
$31.7B
| $2.09M | ﹤0.01% |
20,576
-18,336
| -47% | -$1.86M |
|
158
ON Semiconductor
ON
$19.7B
| $2.08M | ﹤0.01% |
+104,884
| New | +$2.08M |
|
159
iShares MSCI Japan ETF
EWJ
$15.4B
| $2.07M | ﹤0.01% |
+37,737
| New | +$2.07M |
|
|
GAP
160
The Gap, Inc.
GAP
$8.88B
| $2.05M | ﹤0.01% |
+162,759
| New | +$2.05M |
|
161
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$300M
| $2.04M | ﹤0.01% |
128,069
-73,599
| -36% | -$1.17M |
|
162
Dell
DELL
$85.7B
| $2.03M | ﹤0.01% |
72,887
+20,808
| +40% | +$579K |
|
163
ProShares UltraPro Short S&P 500
SPXU
$517M
| $2.01M | ﹤0.01% |
6,830
+418
| +7% | +$123K |
|
164
Invesco DB US Dollar Index Bullish Fund
UUP
$175M
| $2.01M | ﹤0.01% |
76,277
-210,900
| -73% | -$5.55M |
|
165
Direxion Daily S&P Oil & Gas Exp & Prod Bear 2X Shares
DRIP
$44.8M
| $2M | ﹤0.01% |
3,717
-765
| -17% | -$412K |
|
166
Fortinet
FTNT
$58.6B
| $2M | ﹤0.01% |
72,875
+29,035
| +66% | +$797K |
|
|
PLAN
167
DELISTED
Anaplan, Inc.
PLAN
| $1.99M | ﹤0.01% |
44,018
+15,597
| +55% | +$707K |
|
168
ProShares UltraPro Dow 30
UDOW
$726M
| $1.99M | ﹤0.01% |
63,404
-14,618
| -19% | -$459K |
|
169
Qorvo
QRVO
$8.54B
| $1.99M | ﹤0.01% |
17,984
-24,811
| -58% | -$2.74M |
|
170
Eversource Energy
ES
$23.5B
| $1.98M | ﹤0.01% |
23,813
+8,674
| +57% | +$722K |
|
|
AYX
171
DELISTED
Alteryx, Inc.
AYX
| $1.94M | ﹤0.01% |
11,823
+4,137
| +54% | +$680K |
|
172
Electronic Arts
EA
$42B
| $1.94M | ﹤0.01% |
14,689
-17,522
| -54% | -$2.31M |
|
173
Sonos
SONO
$1.74B
| $1.9M | ﹤0.01% |
129,557
+128,983
| +22,471% | +$1.89M |
|
174
Arrowhead Research
ARWR
$3.87B
| $1.89M | ﹤0.01% |
43,654
-2,330
| -5% | -$101K |
|
175
Altice USA
ATUS
$1.09B
| $1.88M | ﹤0.01% |
83,577
+26,712
| +47% | +$602K |
|