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
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MDCO
201
DELISTED
Medicines Co
MDCO
| $1.21M | 0.05% |
32,549
+25,678
| +374% | +$951K |
|
202
TechnipFMC
FTI
$15.7B
| $1.2M | 0.05% |
+43,126
| New | +$1.2M |
|
203
Kinder Morgan
KMI
$59.4B
| $1.2M | 0.05% |
62,665
-15,840
| -20% | -$304K |
|
204
Palo Alto Networks
PANW
$128B
| $1.18M | 0.05% |
8,187
-12,848
| -61% | -$1.85M |
|
205
Tyson Foods
TSN
$20B
| $1.17M | 0.05% |
16,610
+13,016
| +362% | +$917K |
|
206
Hain Celestial
HAIN
$164M
| $1.17M | 0.05% |
28,345
+27,045
| +2,080% | +$1.11M |
|
207
Vipshop
VIPS
$8.36B
| $1.16M | 0.05% |
132,324
+48,686
| +58% | +$428K |
|
|
ILG
208
DELISTED
ILG, Inc Common Stock
ILG
| $1.16M | 0.05% |
43,512
-86,542
| -67% | -$2.31M |
|
209
American Electric Power
AEP
$58.8B
| $1.16M | 0.05% |
16,530
+15,400
| +1,363% | +$1.08M |
|
210
Financial Select Sector SPDR Fund
XLF
$53.6B
| $1.15M | 0.05% |
+44,337
| New | +$1.15M |
|
211
Blackstone
BX
$131B
| $1.14M | 0.05% |
+34,120
| New | +$1.14M |
|
212
VanEck Oil Services ETF
OIH
$862M
| $1.13M | 0.05% |
43,194
+36,394
| +535% | +$949K |
|
213
Hexcel
HXL
$5.08B
| $1.11M | 0.05% |
+19,310
| New | +$1.11M |
|
214
Helmerich & Payne
HP
$2B
| $1.1M | 0.04% |
21,032
+6,592
| +46% | +$343K |
|
|
BCR
215
DELISTED
CR Bard Inc.
BCR
| $1.09M | 0.04% |
3,415
+1,625
| +91% | +$521K |
|
|
ZGNX
216
DELISTED
Zogenix, Inc.
ZGNX
| $1.06M | 0.04% |
+30,352
| New | +$1.06M |
|
|
NBL
217
DELISTED
Noble Energy, Inc.
NBL
| $1.06M | 0.04% |
+37,209
| New | +$1.06M |
|
218
Dominion Energy
D
$50.3B
| $1.05M | 0.04% |
+13,644
| New | +$1.05M |
|
219
Ambarella
AMBA
$3.36B
| $1.04M | 0.04% |
21,299
+18,272
| +604% | +$895K |
|
220
Charles Schwab
SCHW
$175B
| $1.04M | 0.04% |
+23,740
| New | +$1.04M |
|
221
Infosys
INFY
$69B
| $1.03M | 0.04% |
70,821
+50,856
| +255% | +$742K |
|
|
SBNY
222
DELISTED
Signature Bank
SBNY
| $1.03M | 0.04% |
8,064
+6,476
| +408% | +$829K |
|
223
KraneShares CSI China Internet ETF
KWEB
$8.51B
| $1.03M | 0.04% |
18,104
-2,287
| -11% | -$130K |
|
224
Agnico Eagle Mines
AEM
$74.7B
| $1.03M | 0.04% |
22,762
+17,019
| +296% | +$769K |
|
225
Cognex
CGNX
$7.38B
| $1.03M | 0.04% |
9,299
+2,013
| +28% | +$222K |
|