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 | |
|---|---|---|---|---|---|---|
451
iShares MSCI Spain ETF
EWP
$1.36B
| $261K | 0.02% |
+9,735
| New | +$261K |
|
|
DERM
452
DELISTED
Dermira, Inc.
DERM
| $261K | 0.02% |
7,733
-3,551
| -31% | -$120K |
|
|
SC
453
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $260K | 0.02% |
21,399
-7,392
| -26% | -$89.8K |
|
454
Sibanye-Stillwater
SBSW
$6.08B
| $258K | 0.02% |
+19,430
| New | +$258K |
|
455
Teucrium Wheat Fund
WEAT
$117M
| $258K | 0.02% |
+35,982
| New | +$258K |
|
456
NGL Energy Partners
NGL
$735M
| $256K | 0.02% |
+13,631
| New | +$256K |
|
|
COHR
457
DELISTED
Coherent Inc
COHR
| $256K | 0.02% |
+2,323
| New | +$256K |
|
458
U-Haul Holding Co
UHAL
$11.2B
| $255K | 0.02% |
7,870
-5,880
| -43% | -$191K |
|
459
Vanguard Growth ETF
VUG
$186B
| $254K | 0.02% |
2,268
-2,358
| -51% | -$264K |
|
|
NUAN
460
DELISTED
Nuance Communications, Inc.
NUAN
| $254K | 0.02% |
+20,301
| New | +$254K |
|
|
TLN
461
DELISTED
Talen Energy Corporation
TLN
| $254K | 0.02% |
18,378
+5,495
| +43% | +$75.9K |
|
|
BGG
462
DELISTED
Briggs & Stratton Corp.
BGG
| $253K | 0.02% |
+13,589
| New | +$253K |
|
463
WisdomTree India Earnings Fund ETF
EPI
$2.89B
| $252K | 0.02% |
11,697
-38,301
| -77% | -$825K |
|
464
VanEck Retail ETF
RTH
$262M
| $252K | 0.02% |
+3,240
| New | +$252K |
|
|
SODA
465
DELISTED
SodaStream International Ltd
SODA
| $252K | 0.02% |
9,525
-2,692
| -22% | -$71.2K |
|
466
CACI
CACI
$10.4B
| $251K | 0.02% |
2,495
+55
| +2% | +$5.53K |
|
|
CKEC
467
DELISTED
Carmike Cinemas Inc
CKEC
| $250K | 0.02% |
7,654
+6,074
| +384% | +$198K |
|
468
AGNC Investment
AGNC
$10.8B
| $249K | 0.02% |
12,770
+12,564
| +6,099% | +$245K |
|
469
Chart Industries
GTLS
$8.96B
| $249K | 0.02% |
7,598
+7,086
| +1,384% | +$232K |
|
470
Ingredion
INGR
$8.24B
| $248K | 0.02% |
+1,865
| New | +$248K |
|
|
CSC
471
DELISTED
Computer Sciences
CSC
| $248K | 0.02% |
4,760
+4,631
| +3,590% | +$241K |
|
|
SIGM
472
DELISTED
Sigma Designs Inc
SIGM
| $244K | 0.02% |
31,450
+714
| +2% | +$5.54K |
|
|
TGI
473
DELISTED
Triumph Group
TGI
| $242K | 0.02% |
+8,697
| New | +$242K |
|
474
Invesco DB US Dollar Index Bullish Fund
UUP
$174M
| $242K | 0.02% |
+9,839
| New | +$242K |
|
|
EMES
475
DELISTED
Emerge Energy Services LP
EMES
| $240K | 0.02% |
18,420
+17,977
| +4,058% | +$234K |
|