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 |
Microsoft
MSFT
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
CALL
Intel
INTC
$530B
| $216M | 0.18% |
6,463,000
+1,366,000
| +27% | +$42.9M |
|
52
PUT
Palo Alto Networks
PANW
$279B
| $213M | 0.18% |
1,667,000
+58,600
| +4% | +$6.1M |
|
|
53
CALL
PayPal
PYPL
$49.3B
| $211M | 0.17% |
3,165,600
+1,111,900
| +54% | +$75.8M |
|
54
CALL
iShares Silver Trust
SLV
$28.4B
| $210M | 0.17% |
10,070,300
-3,655,100
| -27% | -$81.3M |
|
55
PUT
Goldman Sachs
GS
$320B
| $201M | 0.17% |
624,700
-226,600
| -27% | -$74.5M |
|
56
PUT
Costco
COST
$412B
| $182M | 0.15% |
337,500
-39,600
| -11% | -$20M |
|
57
CALL
Salesforce
CRM
$139B
| $181M | 0.15% |
857,200
-758,000
| -47% | -$155M |
|
|
58
PUT
Walmart Inc
WMT
$878B
| $180M | 0.15% |
3,443,400
+378,600
| +12% | +$19.1M |
|
59
CALL
Home Depot
HD
$332B
| $179M | 0.15% |
574,900
-542,100
| -49% | -$160M |
|
60
CALL
ExxonMobil
XOM
$629B
| $178M | 0.15% |
1,657,700
-345,300
| -17% | -$37.7M |
|
61
PUT
UnitedHealth
UNH
$396B
| $176M | 0.14% |
366,200
-5,100
| -1% | -$2.49M |
|
62
CALL
Oracle
ORCL
$366B
| $176M | 0.14% |
1,474,000
+791,200
| +116% | +$81.8M |
|
63
PUT
First Solar
FSLR
$22.1B
| $173M | 0.14% |
911,200
-205,000
| -18% | -$40.6M |
|
64
CALL
Uber
UBER
$146B
| $170M | 0.14% |
3,948,800
-165,700
| -4% | -$6.16M |
|
65
PUT
Bank of America
BAC
$430B
| $170M | 0.14% |
5,910,700
-397,400
| -6% | -$11.3M |
|
66
CALL
Micron Technology
MU
$1.1T
| $166M | 0.14% |
2,631,900
+493,100
| +23% | +$31.7M |
|
|
67
PUT
Micron Technology
MU
$1.1T
| $165M | 0.14% |
2,613,000
+351,400
| +16% | +$22.6M |
|
|
68
PUT
PayPal
PYPL
$49.3B
| $165M | 0.14% |
2,471,000
+402,300
| +19% | +$27.4M |
|
69
CALL
Snowflake
SNOW
$94.2B
| $165M | 0.14% |
935,000
-109,500
| -10% | -$17.8M |
|
70
PUT
Walt Disney
DIS
$167B
| $164M | 0.13% |
1,837,700
-45,100
| -2% | -$4.27M |
|
71
PUT
Eli Lilly
LLY
$1.02T
| $164M | 0.13% |
349,600
+117,600
| +51% | +$49.3M |
|
72
PUT
TSMC
TSM
$2.2T
| $159M | 0.13% |
1,579,400
-8,800
| -0.6% | -$819K |
|
73
CALL
Johnson & Johnson
JNJ
$599B
| $159M | 0.13% |
961,300
-214,600
| -18% | -$34.6M |
|
74
CALL
Shopify
SHOP
$160B
| $159M | 0.13% |
2,456,700
+150,200
| +7% | +$8.49M |
|
|
75
PUT
Uber
UBER
$146B
| $158M | 0.13% |
3,665,900
+873,800
| +31% | +$32.5M |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.