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 | |
|---|---|---|---|---|---|---|
|
AM
776
DELISTED
ANTERO MIDSTREAM PARTNERS LP
AM
| $86K | 0.01% |
3,227
+1,524
| +89% | +$40.6K |
|
777
ProShares Short High Yield
SJB
$69.2M
| $85K | 0.01% |
+3,410
| New | +$85K |
|
778
Atlassian
TEAM
$46B
| $85K | 0.01% |
+2,857
| New | +$85K |
|
|
NTP
779
DELISTED
Nam Tai Property Inc.
NTP
| $85K | 0.01% |
+10,651
| New | +$85K |
|
780
Brookfield
BN
$101B
| $84K | 0.01% |
4,486
+4,299
| +2,299% | +$80.5K |
|
781
ProShares Ultra Semiconductors
USD
$1.5B
| $84K | 0.01% |
32,736
-33,792
| -51% | -$86.7K |
|
782
Teladoc Health
TDOC
$1.33B
| $83K | 0.01% |
+4,558
| New | +$83K |
|
|
COLO
783
Global X MSCI Colombia ETF
COLO
$101M
| $83K | 0.01% |
+2,192
| New | +$83K |
|
784
Alaunos Therapeutics
TCRT
$4.87M
| $83K | 0.01% |
98
-240
| -71% | -$203K |
|
785
CVR Energy
CVI
$3.19B
| $82K | 0.01% |
6,012
+2,266
| +60% | +$30.9K |
|
786
Kulicke & Soffa
KLIC
$1.98B
| $82K | 0.01% |
+6,358
| New | +$82K |
|
787
Vanguard Health Care ETF
VHT
$15.6B
| $82K | 0.01% |
618
+314
| +103% | +$41.7K |
|
788
Vornado Realty Trust
VNO
$7.63B
| $82K | 0.01% |
+1,008
| New | +$82K |
|
|
CQH
789
DELISTED
Cheniere Energy Partners LP Holdings LLC
CQH
| $82K | 0.01% |
3,624
+310
| +9% | +$7.01K |
|
790
Advanced Energy
AEIS
$5.96B
| $81K | 0.01% |
+1,722
| New | +$81K |
|
791
Diana Shipping
DSX
$219M
| $81K | 0.01% |
44,755
+36,589
| +448% | +$66.2K |
|
|
RATE
792
DELISTED
Bankrate Inc
RATE
| $80K | 0.01% |
9,545
+260
| +3% | +$2.18K |
|
|
BDSI
793
DELISTED
BioDelivery Sciences International, Inc.
BDSI
| $80K | 0.01% |
29,693
+28,317
| +2,058% | +$76.3K |
|
|
LEAF
794
DELISTED
Leaf Group Ltd.
LEAF
| $79K | 0.01% |
13,978
-4,315
| -24% | -$24.4K |
|
|
CALL
795
DELISTED
magicJack VocalTec Ltd
CALL
| $79K | 0.01% |
13,004
+7,938
| +157% | +$48.2K |
|
|
BSFT
796
DELISTED
BroadSoft, Inc.
BSFT
| $79K | 0.01% |
+1,707
| New | +$79K |
|
797
NRG Energy
NRG
$31.2B
| $78K | 0.01% |
7,027
+2,100
| +43% | +$23.3K |
|
798
Telephone and Data Systems
TDS
$4.42B
| $78K | 0.01% |
2,897
-2,616
| -47% | -$70.4K |
|
799
Myriad Genetics
MYGN
$639M
| $77K | 0.01% |
3,747
+156
| +4% | +$3.21K |
|
800
NN Inc
NNBR
$121M
| $77K | 0.01% |
4,264
+4,008
| +1,566% | +$72.4K |
|