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 |
LNKD
LinkedIn Corporation
LNKD
|
$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$14.9M |
| 4 |
Biogen
BIIB
|
$13.7M |
| 5 |
Visa
V
|
$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
$15.8M |
| 4 |
Citigroup
C
|
$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
SPDR Gold Trust
GLD
$107B
| $38M | 2.54% | 300,392 +143,482 | +91% | +$18.1M |
|
|
LNKD
2
DELISTED
LinkedIn Corporation
LNKD
| $32.3M | 2.16% | 170,797 +154,591 | +954% | +$29.3M |
|
|
QIHU
3
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $30.7M | 2.05% | 419,681 +203,477 | +94% | +$14.9M |
|
4
Meta Platforms (Facebook)
META
$1.86T
| $25.8M | 1.73% | 225,926 +90,557 | +67% | +$10.3M |
|
|
5
Biogen
BIIB
$19.4B
| $13.7M | 0.91% | +56,467 | New | +$13.7M |
|
|
6
Visa
V
$683B
| $13.3M | 0.89% | +179,528 | New | +$13.3M |
|
7
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$306M
| $12.1M | 0.81% | 380,742 +378,526 | +17,081% | +$12M |
|
|
CELG
8
DELISTED
Celgene Corp
CELG
| $11.5M | 0.77% | 116,614 +107,696 | +1,208% | +$10.6M |
|
9
WisdomTree Japan Hedged Equity Fund
DXJ
$3.7B
| $11.4M | 0.76% | 294,195 +219,436 | +294% | +$8.51M |
|
10
Invesco CurrencyShares British Pound Sterling Trust
FXB
$91M
| $8.41M | 0.56% | 64,597 +58,795 | +1,013% | +$7.65M |
|
11
Lockheed Martin
LMT
$106B
| $7.93M | 0.53% | 31,960 +28,274 | +767% | +$7.02M |
|
12
Bausch Health
BHC
$2.74B
| $7.77M | 0.52% | 385,788 +134,833 | +54% | +$2.72M |
|
13
Starbucks
SBUX
$100B
| $7.69M | 0.51% | +134,572 | New | +$7.69M |
|
14
Chipotle Mexican Grill
CMG
$56.5B
| $7.51M | 0.5% | +18,652 | New | +$7.51M |
|
15
Kellanova
K
$27.6B
| $6.9M | 0.46% | 84,479 +82,214 | +3,630% | +$6.71M |
|
|
AGN
16
DELISTED
Allergan plc
AGN
| $6.87M | 0.46% | +29,744 | New | +$6.87M |
|
17
Mastercard
MA
$538B
| $6.46M | 0.43% | 73,401 +36,281 | +98% | +$3.19M |
|
18
Marathon Petroleum
MPC
$54.6B
| $6.43M | 0.43% | 169,368 +162,918 | +2,526% | +$6.18M |
|
19
Verizon
VZ
$186B
| $6.28M | 0.42% | 112,395 +69,994 | +165% | +$3.91M |
|
20
BP
BP
$90.8B
| $5.79M | 0.39% | 163,178 +113,851 | +231% | +$4.04M |
|
|
VXX
21
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $5.56M | 0.37% | 402,760 +272,130 | +208% | +$3.76M |
|
22
McDonald's
MCD
$224B
| $5.38M | 0.36% | +44,680 | New | +$5.38M |
|
23
NVIDIA
NVDA
$4.24T
| $5.12M | 0.34% | +108,815 | New | +$5.12M |
|
|
YHOO
24
DELISTED
Yahoo Inc
YHOO
| $5.1M | 0.34% | +135,897 | New | +$5.1M |
|
25
Goldman Sachs
GS
$226B
| $5.07M | 0.34% | 34,153 +15,935 | +87% | +$2.37M |
|