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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
ICICI Bank
IBN
$113B
| $545K | ﹤0.01% |
+47,565
| New | +$545K |
|
377
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$291M
| $541K | ﹤0.01% |
16,779
+15,379
| +1,099% | +$496K |
|
378
Ciena
CIEN
$16.5B
| $536K | ﹤0.01% |
14,369
-17,922
| -56% | -$669K |
|
|
ZGNX
379
DELISTED
Zogenix, Inc.
ZGNX
| $536K | ﹤0.01% |
9,757
+293
| +3% | +$16.1K |
|
380
ProShares Ultra QQQ
QLD
$9.07B
| $535K | ﹤0.01% |
23,828
+9,916
| +71% | +$223K |
|
381
Pacira BioSciences
PCRX
$1.19B
| $533K | ﹤0.01% |
14,006
-19,173
| -58% | -$730K |
|
382
Direxion Daily MSCI Brazil Bull 2X Shares
BRZU
$133M
| $531K | ﹤0.01% |
542
+362
| +201% | +$355K |
|
|
BITA
383
DELISTED
Bitauto Holdings Limited
BITA
| $527K | ﹤0.01% |
33,156
+32,678
| +6,836% | +$519K |
|
384
Pan American Silver
PAAS
$12.5B
| $525K | ﹤0.01% |
39,649
+33,644
| +560% | +$445K |
|
|
CADE
385
DELISTED
Cadence Bancorporation
CADE
| $523K | ﹤0.01% |
+28,220
| New | +$523K |
|
386
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$847M
| $522K | ﹤0.01% |
5,278
-44,571
| -89% | -$4.41M |
|
387
West Pharmaceutical
WST
$18B
| $521K | ﹤0.01% |
4,735
+2,147
| +83% | +$236K |
|
388
TAL Education Group
TAL
$6.17B
| $520K | ﹤0.01% |
+14,436
| New | +$520K |
|
|
LXFT
389
DELISTED
Luxoft Holding, Inc.
LXFT
| $520K | ﹤0.01% |
8,858
+6,277
| +243% | +$368K |
|
390
Voya Financial
VOYA
$7.38B
| $519K | ﹤0.01% |
+10,396
| New | +$519K |
|
|
CCXI
391
DELISTED
ChemoCentryx, Inc.
CCXI
| $519K | ﹤0.01% |
37,401
+30,975
| +482% | +$430K |
|
392
Freeport-McMoran
FCX
$66.5B
| $517K | ﹤0.01% |
40,109
-135,154
| -77% | -$1.74M |
|
393
Mohawk Industries
MHK
$8.65B
| $517K | ﹤0.01% |
4,105
-8,466
| -67% | -$1.07M |
|
|
SFLY
394
DELISTED
Shutterfly, Inc.
SFLY
| $516K | ﹤0.01% |
+12,700
| New | +$516K |
|
395
Mattel
MAT
$6.06B
| $513K | ﹤0.01% |
+39,535
| New | +$513K |
|
|
LL
396
DELISTED
LL Flooring Holdings, Inc.
LL
| $511K | ﹤0.01% |
50,656
+18,364
| +57% | +$185K |
|
397
Esperion Therapeutics
ESPR
$540M
| $510K | ﹤0.01% |
12,708
-1,077
| -8% | -$43.2K |
|
398
Caesarstone
CSTE
$48.7M
| $504K | ﹤0.01% |
32,295
-46,176
| -59% | -$721K |
|
399
BGC Group
BGC
$4.71B
| $502K | ﹤0.01% |
94,667
+50,202
| +113% | +$266K |
|
400
Crown Castle
CCI
$41.9B
| $499K | ﹤0.01% |
3,899
+1,023
| +36% | +$131K |
|