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 | |
|---|---|---|---|---|---|---|
26
Invesco CurrencyShares British Pound Sterling Trust
FXB
$90.4M
| $5.13M | 0.35% |
40,551
-24,046
| -37% | -$3.04M |
|
27
Simon Property Group
SPG
$58.7B
| $4.96M | 0.34% |
+23,942
| New | +$4.96M |
|
28
Electronic Arts
EA
$42B
| $4.95M | 0.34% |
58,002
+50,384
| +661% | +$4.3M |
|
29
NVIDIA
NVDA
$4.15T
| $4.71M | 0.32% |
68,758
-40,057
| -37% | -$2.74M |
|
30
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$694M
| $4.61M | 0.31% |
276,843
-28,117
| -9% | +$3.84M |
|
31
Salesforce
CRM
$245B
| $4.52M | 0.31% |
63,332
+46,293
| +272% | +$3.3M |
|
32
AstraZeneca
AZN
$255B
| $4.51M | 0.31% |
137,226
+97,089
| +242% | +$3.19M |
|
33
Mastercard
MA
$536B
| $4.46M | 0.3% |
43,820
-29,581
| -40% | -$3.01M |
|
|
CBPO
34
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $4.42M | 0.3% |
35,509
+12,255
| +53% | +$1.53M |
|
35
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.86B
| $4.27M | 0.29% |
111,078
+24,833
| +29% | +$955K |
|
36
Intuitive Surgical
ISRG
$158B
| $4.26M | 0.29% |
+5,883
| New | +$4.26M |
|
37
iShares Russell 2000 ETF
IWM
$66.6B
| $4.26M | 0.29% |
34,327
+8,433
| +33% | +$1.05M |
|
38
iShares Biotechnology ETF
IBB
$5.68B
| $4.22M | 0.29% |
14,578
+5,378
| +58% | +$1.56M |
|
39
Blackstone
BX
$131B
| $3.82M | 0.26% |
149,769
+94,598
| +171% | +$2.41M |
|
40
Nike
NKE
$110B
| $3.62M | 0.25% |
+68,740
| New | +$3.62M |
|
41
Charter Communications
CHTR
$35.7B
| $3.62M | 0.25% |
13,402
+3,234
| +32% | +$873K |
|
42
Colgate-Palmolive
CL
$67.7B
| $3.6M | 0.24% |
48,583
+34,198
| +238% | +$2.53M |
|
43
Eli Lilly
LLY
$661B
| $3.51M | 0.24% |
+43,675
| New | +$3.51M |
|
44
Bausch Health
BHC
$2.72B
| $3.45M | 0.23% |
140,719
-245,069
| -64% | -$6.02M |
|
|
VIAB
45
DELISTED
Viacom Inc. Class B
VIAB
| $3.36M | 0.23% |
88,108
+40,070
| +83% | +$1.53M |
|
|
YHOO
46
DELISTED
Yahoo Inc
YHOO
| $3.35M | 0.23% |
77,820
-58,077
| -43% | -$2.5M |
|
47
The Mosaic Company
MOS
$10.4B
| $3.32M | 0.23% |
135,813
+76,912
| +131% | +$1.88M |
|
48
Trip.com Group
TCOM
$46.6B
| $3.27M | 0.22% |
+70,190
| New | +$3.27M |
|
|
CIT
49
DELISTED
CIT Group Inc.
CIT
| $3.24M | 0.22% |
+89,385
| New | +$3.24M |
|
50
NXP Semiconductors
NXPI
$57.5B
| $3.22M | 0.22% |
31,594
+27,744
| +721% | +$2.83M |
|