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 |
Gilead Sciences
GILD
|
$16.8M |
| 2 |
Apple
AAPL
|
$16.2M |
| 3 |
Booking.com
BKNG
|
$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$15.3M |
| 5 |
Wells Fargo
WFC
|
$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BUFF
476
DELISTED
Blue Buffalo Pet Products, Inc
BUFF
| $240K | 0.02% |
+10,137
| New | +$240K |
|
|
TERP
477
DELISTED
TerraForm Power, Inc
TERP
| $239K | 0.02% |
17,214
+5,971
| +53% | +$82.9K |
|
478
HP
HPQ
$27.4B
| $237K | 0.02% |
15,307
+7,307
| +91% | +$113K |
|
|
BBG
479
DELISTED
Bill Barrett Corp
BBG
| $237K | 0.02% |
+42,670
| New | +$237K |
|
|
CVRR
480
DELISTED
CVR Refining, LP
CVRR
| $236K | 0.02% |
27,007
+11,111
| +70% | +$97.1K |
|
|
SONC
481
DELISTED
Sonic Corp
SONC
| $236K | 0.02% |
9,037
-30
| -0.3% | -$783 |
|
482
Tucows
TCX
$198M
| $235K | 0.02% |
7,347
+3,078
| +72% | +$98.5K |
|
|
USCR
483
DELISTED
U S Concrete, Inc.
USCR
| $235K | 0.02% |
+5,113
| New | +$235K |
|
|
ANDV
484
DELISTED
Andeavor
ANDV
| $235K | 0.02% |
+2,955
| New | +$235K |
|
|
HAR
485
DELISTED
Harman International Industries
HAR
| $235K | 0.02% |
+2,783
| New | +$235K |
|
486
Novartis
NVS
$251B
| $234K | 0.02% |
3,311
-2,242
| -40% | -$158K |
|
|
UFS
487
DELISTED
DOMTAR CORPORATION (New)
UFS
| $234K | 0.02% |
6,318
-2,816
| -31% | -$104K |
|
488
Euronet Worldwide
EEFT
$3.74B
| $233K | 0.02% |
+2,848
| New | +$233K |
|
|
FIG
489
DELISTED
Fortress Investment Group Llc
FIG
| $230K | 0.02% |
46,589
+10,861
| +30% | +$53.6K |
|
|
PSG
490
DELISTED
Performance Sports Group Ltd.
PSG
| $229K | 0.02% |
56,426
+49,871
| +761% | +$202K |
|
491
Gray Television
GTN
$625M
| $228K | 0.02% |
22,031
+15,654
| +245% | +$162K |
|
|
PBFX
492
DELISTED
PBF LOGISTICS LP
PBFX
| $228K | 0.02% |
+11,538
| New | +$228K |
|
|
ZLTQ
493
DELISTED
ZELTIQ Aesthetics, Inc.
ZLTQ
| $228K | 0.02% |
5,827
+4,387
| +305% | +$172K |
|
494
Hewlett Packard
HPE
$31B
| $226K | 0.02% |
17,147
-35,067
| -67% | -$462K |
|
495
Sleep Number
SNBR
$220M
| $226K | 0.02% |
10,470
-14,426
| -58% | -$311K |
|
|
BKI
496
DELISTED
Black Knight, Inc. Common Stock
BKI
| $226K | 0.02% |
5,538
+3,440
| +164% | +$140K |
|
|
HNP
497
DELISTED
Huaneng Power Intl, Inc.
HNP
| $226K | 0.02% |
9,006
-2,471
| -22% | -$62K |
|
498
Esperion Therapeutics
ESPR
$540M
| $225K | 0.02% |
16,315
+11,570
| +244% | +$160K |
|
|
AMSG
499
DELISTED
Amsurg Corp
AMSG
| $225K | 0.02% |
+3,364
| New | +$225K |
|
500
Prudential
PUK
$33.7B
| $224K | 0.02% |
6,481
+1,544
| +31% | +$53.4K |
|