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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
CALL
Union Pacific
UNP
$174B
| $163M | 0.14% |
808,100
+332,800
| +70% | +$67.4M |
|
77
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $163M | 0.14% |
526,300
-88,000
| -14% | -$27.1M |
|
78
CALL
Procter & Gamble
PG
$345B
| $162M | 0.14% |
1,087,400
-161,600
| -13% | -$23.1M |
|
79
CALL
Snowflake
SNOW
$94.2B
| $161M | 0.14% |
1,044,500
+288,300
| +38% | +$42.3M |
|
80
CALL
TSMC
TSM
$2.2T
| $161M | 0.14% |
1,728,000
+368,100
| +27% | +$33M |
|
81
PUT
Palo Alto Networks
PANW
$279B
| $161M | 0.14% |
1,608,400
+247,600
| +18% | +$21M |
|
82
CALL
UnitedHealth
UNH
$396B
| $160M | 0.14% |
338,800
-95,000
| -22% | -$45.8M |
|
83
PUT
FedEx
FDX
$75.2B
| $159M | 0.14% |
693,900
+261,500
| +60% | +$53.1M |
|
84
PUT
PayPal
PYPL
$49.3B
| $157M | 0.14% |
2,068,700
-214,900
| -9% | -$16.6M |
|
85
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $157M | 0.14% |
2,840,300
+25,300
| +0.9% | +$1.63M |
|
86
PUT
Mastercard
MA
$476B
| $156M | 0.14% |
429,400
+41,300
| +11% | +$15M |
|
|
87
CALL
PayPal
PYPL
$49.3B
| $156M | 0.14% |
2,053,700
-1,418,600
| -41% | -$109M |
|
88
CALL
Coinbase
COIN
$46.3B
| $156M | 0.14% |
2,302,500
+637,900
| +38% | +$38.2M |
|
89
CALL
Cisco
CSCO
$442B
| $156M | 0.14% |
2,975,300
-671,500
| -18% | -$32.8M |
|
90
PUT
PepsiCo
PEP
$184B
| $155M | 0.14% |
848,300
+405,200
| +91% | +$70.8M |
|
91
CALL
Visa
V
$677B
| $154M | 0.14% |
681,800
-228,500
| -25% | -$50.9M |
|
92
CALL
Walt Disney
DIS
$167B
| $153M | 0.13% |
1,526,500
-740,400
| -33% | -$74.6M |
|
93
PUT
Vanguard S&P 500 ETF
VOO
$981B
| $153M | 0.13% |
641,800
+26,800
| +4% | +$9.83M |
|
|
XYZ
94
CALL
Block Inc
XYZ
$47.8B
| $152M | 0.13% |
2,215,600
+494,300
| +29% | +$37M |
|
95
CALL
Nike
NKE
$63.7B
| $152M | 0.13% |
1,236,600
-346,800
| -22% | -$42.6M |
|
96
CALL
Moderna
MRNA
$23.7B
| $151M | 0.13% |
982,600
+348,000
| +55% | +$57.4M |
|
|
97
PUT
Walmart Inc
WMT
$878B
| $151M | 0.13% |
3,064,800
-46,800
| -2% | -$2.22M |
|
98
CALL
Chevron
CVX
$381B
| $150M | 0.13% |
920,800
+268,000
| +41% | +$44.9M |
|
|
99
PUT
TSMC
TSM
$2.2T
| $148M | 0.13% |
1,588,200
+295,600
| +23% | +$26.5M |
|
|
100
CALL
Citigroup
C
$223B
| $147M | 0.13% |
3,128,400
-957,300
| -23% | -$47M |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.