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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
426
Cardlytics
CDLX
$129M
| $1.13M | ﹤0.01% |
77,719
+69,829
| +885% | +$1.01M |
|
|
TEN
427
Tsakos Energy Navigation Ltd
TEN
$684M
| $1.12M | ﹤0.01% |
44,061
-780
| -2% | -$19.8K |
|
428
Thomson Reuters
TRI
$73.2B
| $1.11M | ﹤0.01% |
7,139
+2,409
| +51% | +$375K |
|
429
Trimble
TRMB
$19.7B
| $1.11M | ﹤0.01% |
+17,240
| New | +$1.11M |
|
430
Opendoor
OPEN
$7.04B
| $1.11M | ﹤0.01% |
+365,539
| New | +$1.11M |
|
431
Concentrix
CNXC
$3.59B
| $1.11M | ﹤0.01% |
+16,712
| New | +$1.11M |
|
|
SA
432
Seabridge Gold
SA
$2.06B
| $1.11M | ﹤0.01% |
73,152
+36,653
| +100% | +$554K |
|
433
Labcorp
LH
$23B
| $1.1M | ﹤0.01% |
5,043
+4,926
| +4,210% | +$1.08M |
|
434
Toast
TOST
$24B
| $1.1M | ﹤0.01% |
43,988
+25,365
| +136% | +$632K |
|
435
Republic Services
RSG
$70.9B
| $1.09M | ﹤0.01% |
+5,718
| New | +$1.09M |
|
|
BERY
436
DELISTED
Berry Global Group, Inc.
BERY
| $1.09M | ﹤0.01% |
+19,668
| New | +$1.09M |
|
437
Knight Transportation
KNX
$6.5B
| $1.09M | ﹤0.01% |
+19,836
| New | +$1.09M |
|
438
Alexandria Real Estate Equities
ARE
$14.7B
| $1.08M | ﹤0.01% |
8,341
-6,332
| -43% | -$816K |
|
439
Avery Dennison
AVY
$12.8B
| $1.07M | ﹤0.01% |
4,807
+3,694
| +332% | +$825K |
|
440
Acadia Pharmaceuticals
ACAD
$4.12B
| $1.06M | ﹤0.01% |
57,376
-2,989
| -5% | -$55.2K |
|
441
Illinois Tool Works
ITW
$76.3B
| $1.06M | ﹤0.01% |
+3,937
| New | +$1.06M |
|
442
NETGEAR
NTGR
$845M
| $1.05M | ﹤0.01% |
66,347
+40,126
| +153% | +$633K |
|
443
Global X Silver Miners ETF NEW
SIL
$3.23B
| $1.04M | ﹤0.01% |
37,999
-9,006
| -19% | -$247K |
|
444
Ardelyx
ARDX
$1.5B
| $1.04M | ﹤0.01% |
142,649
-258,030
| -64% | -$1.88M |
|
445
Sherwin-Williams
SHW
$86.5B
| $1.04M | ﹤0.01% |
2,995
-6,992
| -70% | -$2.43M |
|
446
United Parks & Resorts
PRKS
$2.82B
| $1.04M | ﹤0.01% |
+18,517
| New | +$1.04M |
|
447
Brookfield Renewable
BEPC
$6.06B
| $1.03M | ﹤0.01% |
41,934
+40,318
| +2,495% | +$990K |
|
448
Freshpet
FRPT
$2.51B
| $1.02M | ﹤0.01% |
8,813
-20,833
| -70% | -$2.41M |
|
449
PVH
PVH
$4.16B
| $1.02M | ﹤0.01% |
7,244
-16,896
| -70% | -$2.37M |
|
450
First Horizon
FHN
$11.7B
| $1.02M | ﹤0.01% |
66,004
+18,363
| +39% | +$283K |
|