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 |
Financial Select Sector SPDR Fund
XLF
|
$42.3M |
| 2 |
Shopify
SHOP
|
$37.4M |
| 3 |
Verizon
VZ
|
$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
$33M |
| 5 |
Merck
MRK
|
$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
$38.3M |
| 2 |
Carnival Corp
CCL
|
$37.6M |
| 3 |
GE Aerospace
GE
|
$33M |
| 4 |
Advanced Micro Devices
AMD
|
$30.6M |
| 5 |
Micron Technology
MU
|
$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$770M
| $2.62M | ﹤0.01% |
3,640
+3,183
| +696% | +$2.29M |
|
252
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$246M
| $2.61M | ﹤0.01% |
118,896
+20,260
| +21% | +$444K |
|
253
Coterra Energy
CTRA
$18.3B
| $2.6M | ﹤0.01% |
136,792
+15,887
| +13% | +$302K |
|
254
Prologis
PLD
$105B
| $2.58M | ﹤0.01% |
+15,339
| New | +$2.58M |
|
255
Equifax
EFX
$30.8B
| $2.56M | ﹤0.01% |
8,734
+6,214
| +247% | +$1.82M |
|
256
Charles River Laboratories
CRL
$8.07B
| $2.54M | ﹤0.01% |
+6,740
| New | +$2.54M |
|
|
DM
257
DELISTED
Desktop Metal, Inc.
DM
| $2.52M | ﹤0.01% |
50,823
+43,791
| +623% | +$2.17M |
|
258
KB Home
KBH
$4.63B
| $2.51M | ﹤0.01% |
56,064
-21,956
| -28% | -$982K |
|
|
ZGNX
259
DELISTED
Zogenix, Inc.
ZGNX
| $2.5M | ﹤0.01% |
153,860
+120,093
| +356% | +$1.95M |
|
260
CrowdStrike
CRWD
$105B
| $2.5M | ﹤0.01% |
+12,201
| New | +$2.5M |
|
261
NextEra Energy, Inc.
NEE
$146B
| $2.49M | ﹤0.01% |
26,713
-23,386
| -47% | -$2.18M |
|
262
T Rowe Price
TROW
$23.8B
| $2.49M | ﹤0.01% |
+12,645
| New | +$2.49M |
|
|
NEWR
263
DELISTED
New Relic, Inc.
NEWR
| $2.48M | ﹤0.01% |
22,571
-4,770
| -17% | -$524K |
|
264
Sonos
SONO
$1.78B
| $2.45M | ﹤0.01% |
82,161
+62,048
| +308% | +$1.85M |
|
265
Greenidge Generation Holdings
GREE
$18.5M
| $2.45M | ﹤0.01% |
+15,245
| New | +$2.45M |
|
|
SPLK
266
DELISTED
Splunk Inc
SPLK
| $2.43M | ﹤0.01% |
21,001
-63,330
| -75% | -$7.33M |
|
|
LSI
267
DELISTED
Life Storage, Inc.
LSI
| $2.43M | ﹤0.01% |
15,842
+8,706
| +122% | +$1.33M |
|
268
Floor & Decor
FND
$9.42B
| $2.41M | ﹤0.01% |
18,514
+14,082
| +318% | +$1.83M |
|
269
CSX Corp
CSX
$60.6B
| $2.4M | ﹤0.01% |
63,908
+63,529
| +16,762% | +$2.39M |
|
270
Ventas
VTR
$30.9B
| $2.38M | ﹤0.01% |
46,561
+35,693
| +328% | +$1.82M |
|
|
HZNP
271
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $2.36M | ﹤0.01% |
21,935
+3,166
| +17% | +$341K |
|
272
BioMarin Pharmaceuticals
BMRN
$11.1B
| $2.34M | ﹤0.01% |
26,465
+14,151
| +115% | +$1.25M |
|
|
DQ
273
Daqo New Energy
DQ
$1.96B
| $2.34M | ﹤0.01% |
57,964
+18,185
| +46% | +$733K |
|
274
Goodyear
GT
$2.43B
| $2.34M | ﹤0.01% |
109,530
+94,115
| +611% | +$2.01M |
|
|
CERN
275
DELISTED
Cerner Corp
CERN
| $2.33M | ﹤0.01% |
+25,103
| New | +$2.33M |
|