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 | |
|---|---|---|---|---|---|---|
201
GE Aerospace
GE
$296B
| $1.57M | ﹤0.01% |
46,236
-25,172
| -35% | -$856K |
|
202
Alkermes
ALKS
$4.94B
| $1.57M | ﹤0.01% |
80,741
+59,130
| +274% | +$1.15M |
|
203
Freeport-McMoran
FCX
$66.5B
| $1.56M | ﹤0.01% |
134,867
-131,200
| -49% | -$1.52M |
|
|
SNP
204
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $1.55M | ﹤0.01% |
36,882
+7,267
| +25% | +$305K |
|
205
Bausch Health
BHC
$2.72B
| $1.54M | ﹤0.01% |
+84,227
| New | +$1.54M |
|
206
Linde
LIN
$220B
| $1.54M | ﹤0.01% |
+7,254
| New | +$1.54M |
|
207
Direxion Daily Energy Bull 2X Shares
ERX
$218M
| $1.53M | ﹤0.01% |
101,570
+87,005
| +597% | +$1.31M |
|
208
Axon Enterprise
AXON
$57.2B
| $1.51M | ﹤0.01% |
15,377
+4,367
| +40% | +$428K |
|
209
iShares MSCI Germany ETF
EWG
$2.51B
| $1.49M | ﹤0.01% |
54,984
-13,230
| -19% | -$359K |
|
210
International Flavors & Fragrances
IFF
$16.9B
| $1.48M | ﹤0.01% |
12,075
+7,257
| +151% | +$888K |
|
211
MaxLinear
MXL
$1.36B
| $1.47M | ﹤0.01% |
68,652
+65,546
| +2,110% | +$1.41M |
|
|
AMRN
212
Amarin Corp
AMRN
$317M
| $1.45M | ﹤0.01% |
10,484
-18,736
| -64% | -$2.59M |
|
213
Booking.com
BKNG
$178B
| $1.44M | ﹤0.01% |
907
+673
| +288% | +$1.07M |
|
214
Seagate
STX
$40B
| $1.44M | ﹤0.01% |
+29,819
| New | +$1.44M |
|
|
KRA
215
DELISTED
Kraton Corporation
KRA
| $1.44M | ﹤0.01% |
83,452
+80,992
| +3,292% | +$1.4M |
|
216
HDFC Bank
HDB
$181B
| $1.44M | ﹤0.01% |
31,681
+7,997
| +34% | +$363K |
|
|
DFS
217
DELISTED
Discover Financial Services
DFS
| $1.44M | ﹤0.01% |
+28,703
| New | +$1.44M |
|
218
Vanguard Dividend Appreciation ETF
VIG
$95.8B
| $1.43M | ﹤0.01% |
12,231
+2,573
| +27% | +$301K |
|
219
Tyler Technologies
TYL
$24.2B
| $1.4M | ﹤0.01% |
4,045
+327
| +9% | +$113K |
|
220
Ventas
VTR
$30.9B
| $1.4M | ﹤0.01% |
38,138
-22,224
| -37% | -$813K |
|
221
Teladoc Health
TDOC
$1.38B
| $1.39M | ﹤0.01% |
+7,302
| New | +$1.39M |
|
222
iRobot
IRBT
$102M
| $1.39M | ﹤0.01% |
16,599
+16,499
| +16,499% | +$1.38M |
|
223
Chewy
CHWY
$17.5B
| $1.39M | ﹤0.01% |
31,009
+18,685
| +152% | +$835K |
|
224
ProShares Ultra S&P500
SSO
$7.2B
| $1.36M | ﹤0.01% |
43,564
+38,364
| +738% | +$1.2M |
|
|
NUAN
225
DELISTED
Nuance Communications, Inc.
NUAN
| $1.36M | ﹤0.01% |
+53,695
| New | +$1.36M |
|