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 |
Apple
AAPL
|
$35.2M |
| 2 |
Micron Technology
MU
|
$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
$29.5M |
| 4 |
NVIDIA
NVDA
|
$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
$34.8M |
| 2 |
Amazon
AMZN
|
$33.4M |
| 3 |
Tesla
TSLA
|
$19.8M |
| 4 |
Netflix
NFLX
|
$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Tapestry
TPR
$21.7B
| $752K | ﹤0.01% |
+16,114
| New | +$752K |
|
352
TG Therapeutics
TGTX
$5.11B
| $749K | ﹤0.01% |
+57,018
| New | +$749K |
|
353
Embraer
ERJ
$11.2B
| $746K | ﹤0.01% |
29,999
-15,224
| -34% | -$379K |
|
|
CGC
354
Canopy Growth
CGC
$456M
| $745K | ﹤0.01% |
+2,544
| New | +$745K |
|
|
PVTL
355
DELISTED
Pivotal Software, Inc.
PVTL
| $745K | ﹤0.01% |
+30,735
| New | +$745K |
|
|
SGEN
356
DELISTED
Seagen Inc. Common Stock
SGEN
| $743K | ﹤0.01% |
11,195
+233
| +2% | +$15.5K |
|
357
PPG Industries
PPG
$24.8B
| $742K | ﹤0.01% |
+7,159
| New | +$742K |
|
358
Edgewell Personal Care
EPC
$1.09B
| $738K | ﹤0.01% |
+14,631
| New | +$738K |
|
359
Monster Beverage
MNST
$61B
| $738K | ﹤0.01% |
25,774
-15,554
| -38% | -$445K |
|
360
Lowe's Companies
LOW
$151B
| $737K | ﹤0.01% |
7,713
-12,102
| -61% | -$1.16M |
|
|
HDS
361
DELISTED
HD Supply Holdings, Inc.
HDS
| $737K | ﹤0.01% |
17,193
+16,972
| +7,680% | +$728K |
|
362
Liberty Latin America Class A
LILA
$1.6B
| $736K | ﹤0.01% |
40,853
+22,440
| +122% | +$404K |
|
363
Exact Sciences
EXAS
$10.2B
| $735K | ﹤0.01% |
12,308
-4,919
| -29% | -$294K |
|
364
Wyndham Hotels & Resorts
WH
$6.59B
| $732K | ﹤0.01% |
+12,449
| New | +$732K |
|
|
BZUN
365
Baozun
BZUN
$207M
| $731K | ﹤0.01% |
+13,375
| New | +$731K |
|
366
iShares Core S&P Small-Cap ETF
IJR
$86B
| $729K | ﹤0.01% |
+8,744
| New | +$729K |
|
367
Baker Hughes
BKR
$44.9B
| $724K | ﹤0.01% |
+21,929
| New | +$724K |
|
368
Ross Stores
ROST
$49.4B
| $721K | ﹤0.01% |
8,518
+3,530
| +71% | +$299K |
|
369
Sangamo Therapeutics
SGMO
$165M
| $720K | ﹤0.01% |
50,743
+343
| +0.7% | +$4.87K |
|
|
BITA
370
DELISTED
Bitauto Holdings Limited
BITA
| $720K | ﹤0.01% |
+30,316
| New | +$720K |
|
371
Interactive Brokers
IBKR
$26.8B
| $719K | ﹤0.01% |
44,676
+41,440
| +1,281% | +$667K |
|
372
Simpson Manufacturing
SSD
$8.15B
| $717K | ﹤0.01% |
11,541
+2,863
| +33% | +$178K |
|
373
iShares Russell 1000 Value ETF
IWD
$63.5B
| $715K | ﹤0.01% |
+5,896
| New | +$715K |
|
374
VanEck Oil Services ETF
OIH
$880M
| $714K | ﹤0.01% |
1,359
-1,313
| -49% | -$690K |
|
375
Cimpress
CMPR
$1.54B
| $711K | ﹤0.01% |
+4,906
| New | +$711K |
|