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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
Willis Towers Watson
WTW
$32.1B
| $646K | ﹤0.01% |
3,349
+2,931
| +701% | +$565K |
|
327
The Mosaic Company
MOS
$10.2B
| $643K | ﹤0.01% |
+31,382
| New | +$643K |
|
328
Targa Resources
TRGP
$34.7B
| $641K | ﹤0.01% |
+15,981
| New | +$641K |
|
329
MGIC Investment
MTG
$6.51B
| $635K | ﹤0.01% |
50,486
+48,202
| +2,110% | +$606K |
|
330
ING
ING
$71B
| $632K | ﹤0.01% |
60,483
-90,293
| -60% | -$943K |
|
331
Waste Management
WM
$88.3B
| $632K | ﹤0.01% |
5,497
-13,774
| -71% | -$1.58M |
|
332
SPDR Euro Stoxx 50 ETF
FEZ
$4.56B
| $630K | ﹤0.01% |
+16,707
| New | +$630K |
|
333
US Foods
USFD
$17.6B
| $629K | ﹤0.01% |
+15,316
| New | +$629K |
|
|
MBT
334
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $622K | ﹤0.01% |
76,822
+71,175
| +1,260% | +$576K |
|
335
CRH
CRH
$74.3B
| $621K | ﹤0.01% |
18,090
+103
| +0.6% | +$3.54K |
|
336
Bausch Health
BHC
$2.67B
| $618K | ﹤0.01% |
28,287
+1,742
| +7% | +$38.1K |
|
|
JO
337
DELISTED
iPath Series B Bloomberg Coffee Subindex Total ReturnSM ETN
JO
| $615K | ﹤0.01% |
18,424
+90
| +0.5% | +$3K |
|
338
Golar LNG
GLNG
$4.23B
| $610K | ﹤0.01% |
47,000
+40,674
| +643% | +$528K |
|
339
Madrigal Pharmaceuticals
MDGL
$10B
| $608K | ﹤0.01% |
7,057
+698
| +11% | +$60.1K |
|
340
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$54.1M
| $607K | ﹤0.01% |
137
+103
| +303% | +$456K |
|
341
Alerian MLP ETF
AMLP
$10.5B
| $604K | ﹤0.01% |
13,233
-745
| -5% | -$34K |
|
342
Direxion Daily Technology Bull 3x Shares
TECL
$3.57B
| $603K | ﹤0.01% |
+36,200
| New | +$603K |
|
343
Dropbox
DBX
$8.42B
| $597K | ﹤0.01% |
29,601
+13,422
| +83% | +$271K |
|
344
Cheniere Energy
LNG
$51.5B
| $596K | ﹤0.01% |
+9,456
| New | +$596K |
|
|
HALL
345
DELISTED
Hallmark Financial Services, Inc.
HALL
| $595K | ﹤0.01% |
3,115
+1,210
| +64% | +$231K |
|
346
RE/MAX Holdings
RMAX
$187M
| $592K | ﹤0.01% |
+18,438
| New | +$592K |
|
|
TWOU
347
DELISTED
2U, Inc.
TWOU
| $586K | ﹤0.01% |
+1,201
| New | +$586K |
|
348
Arlo Technologies
ARLO
$1.83B
| $585K | ﹤0.01% |
171,657
-95,127
| -36% | -$324K |
|
349
Conduent
CNDT
$442M
| $583K | ﹤0.01% |
93,767
+69,435
| +285% | +$432K |
|
350
Tri Pointe Homes
TPH
$3.11B
| $583K | ﹤0.01% |
+38,820
| New | +$583K |
|