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 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ITCI
301
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $670K | 0.03% |
31,842
-525
| -2% | -$11K |
|
|
SNP
302
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $670K | 0.03% |
+7,577
| New | +$670K |
|
|
CERN
303
DELISTED
Cerner Corp
CERN
| $668K | 0.03% |
+11,524
| New | +$668K |
|
304
Corpay
CPAY
$22.1B
| $667K | 0.03% |
3,298
+1,727
| +110% | +$349K |
|
305
AptarGroup
ATR
$9.03B
| $662K | 0.03% |
+7,378
| New | +$662K |
|
306
WPP
WPP
$5.89B
| $661K | 0.03% |
+8,317
| New | +$661K |
|
|
GBT
307
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $658K | 0.03% |
+13,635
| New | +$658K |
|
308
Copa Holdings
CPA
$4.69B
| $656K | 0.03% |
5,101
+380
| +8% | +$48.9K |
|
309
Knight Transportation
KNX
$6.96B
| $656K | 0.03% |
+14,277
| New | +$656K |
|
310
Timken Company
TKR
$5.3B
| $655K | 0.03% |
+14,366
| New | +$655K |
|
311
Henry Schein
HSIC
$8.2B
| $648K | 0.03% |
+12,301
| New | +$648K |
|
312
Okta
OKTA
$16.5B
| $647K | 0.03% |
16,255
+15,317
| +1,633% | +$610K |
|
313
Kinder Morgan
KMI
$59.2B
| $645K | 0.03% |
+42,886
| New | +$645K |
|
|
LADR
314
Ladder Capital
LADR
$1.5B
| $645K | 0.03% |
+42,786
| New | +$645K |
|
315
AXIS Capital
AXS
$7.58B
| $643K | 0.03% |
11,184
+4,600
| +70% | +$264K |
|
316
Brunswick
BC
$4.27B
| $642K | 0.03% |
10,820
+6,242
| +136% | +$370K |
|
317
Medtronic
MDT
$121B
| $636K | 0.03% |
7,935
-20,194
| -72% | -$1.62M |
|
318
Progress Software
PRGS
$1.85B
| $636K | 0.03% |
+16,551
| New | +$636K |
|
319
iShares Russell 2000 Growth ETF
IWO
$12.6B
| $635K | 0.03% |
3,336
+2,132
| +177% | +$406K |
|
|
ETP
320
DELISTED
Energy Transfer Partners, L.P.
ETP
| $635K | 0.03% |
39,164
-59,257
| -60% | -$961K |
|
321
Wingstop
WING
$8.03B
| $634K | 0.03% |
+13,441
| New | +$634K |
|
322
Honda
HMC
$45.2B
| $630K | 0.03% |
18,168
-3,830
| -17% | -$133K |
|
323
Vanguard Total Stock Market ETF
VTI
$530B
| $630K | 0.03% |
4,644
-7,444
| -62% | -$1.01M |
|
324
iShare MSCI Eurozone ETF
EZU
$7.92B
| $624K | 0.03% |
14,405
+10,158
| +239% | +$440K |
|
325
Ironwood Pharmaceuticals
IRWD
$180M
| $623K | 0.03% |
48,273
+39,273
| +436% | +$507K |
|