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 |
Goldman Sachs
GS
|
$38.4M |
| 2 |
Micron Technology
MU
|
$23.7M |
| 3 |
NVIDIA
NVDA
|
$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$21.7M |
| 5 |
Wells Fargo
WFC
|
$20.4M |
Top Sells
| 1 |
Citigroup
C
|
$21.6M |
| 2 |
Apple
AAPL
|
$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$13.3M |
| 4 |
Eli Lilly
LLY
|
$9.69M |
| 5 |
Mastercard
MA
|
$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1
SPDR S&P 500 ETF Trust
SPY
$658B
| $70.8M | 3.06% | 300,183 +72,313 | +32% | +$17M |
|
2
Meta Platforms (Facebook)
META
$1.86T
| $56.8M | 2.46% | 399,955 -27,707 | -6% | -$3.94M |
|
3
Alphabet (Google) Class C
GOOG
$2.58T
| $40.5M | 1.75% | 48,818 +11,853 | +32% | +$9.83M |
|
|
4
Goldman Sachs
GS
$226B
| $38.5M | 1.66% | 167,448 +167,148 | +55,716% | +$38.4M |
|
|
5
Apple
AAPL
$3.45T
| $38.1M | 1.65% | 265,361 -119,428 | -31% | -$17.2M |
|
6
Gilead Sciences
GILD
$140B
| $32.5M | 1.41% | 479,046 +170,682 | +55% | +$11.6M |
|
7
Amazon
AMZN
$2.44T
| $31.9M | 1.38% | 35,995 +352 | +1% | +$312K |
|
8
Booking.com
BKNG
$181B
| $30.1M | 1.3% | 16,920 +10,073 | +147% | +$17.9M |
|
|
9
NVIDIA
NVDA
$4.24T
| $26.2M | 1.14% | 240,928 +216,679 | +894% | +$23.6M |
|
|
10
Micron Technology
MU
$133B
| $24.5M | 1.06% | 849,207 +820,298 | +2,838% | +$23.7M |
|
|
11
iShares 20+ Year Treasury Bond ETF
TLT
$47.8B
| $21.7M | 0.94% | +179,511 | New | +$21.7M |
|
12
Netflix
NFLX
$513B
| $21.5M | 0.93% | 145,564 +6,921 | +5% | +$1.02M |
|
13
AT&T
T
$209B
| $20.8M | 0.9% | 501,773 +428,856 | +588% | +$17.8M |
|
|
14
Wells Fargo
WFC
$263B
| $20.4M | 0.88% | +365,792 | New | +$20.4M |
|
15
CVS Health
CVS
$92.8B
| $18.5M | 0.8% | 235,318 +218,456 | +1,296% | +$17.1M |
|
|
16
Alphabet (Google) Class A
GOOGL
$2.57T
| $17.4M | 0.76% | 20,581 -1,647 | -7% | -$1.4M |
|
17
Humana
HUM
$36.5B
| $16.9M | 0.73% | 82,084 +81,946 | +59,381% | +$16.9M |
|
18
AbbVie
ABBV
$372B
| $16.3M | 0.7% | +249,834 | New | +$16.3M |
|
19
Starbucks
SBUX
$100B
| $15.8M | 0.68% | 270,436 +202,195 | +296% | +$11.8M |
|
20
Altria Group
MO
$113B
| $13.2M | 0.57% | +184,406 | New | +$13.2M |
|
21
Energy Select Sector SPDR Fund
XLE
$27.6B
| $12.5M | 0.54% | +178,313 | New | +$12.5M |
|
22
Berkshire Hathaway Class B
BRK.B
$1.09T
| $11.9M | 0.52% | +71,515 | New | +$11.9M |
|
23
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.18B
| $11.8M | 0.51% | 111,693 +65,303 | +141% | +$6.91M |
|
24
Bank of America
BAC
$376B
| $11.1M | 0.48% | +472,345 | New | +$11.1M |
|
25
Colgate-Palmolive
CL
$67.9B
| $10.7M | 0.46% | +145,573 | New | +$10.7M |
|