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
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $392M | 0.44% |
6,188,400
+400,400
| +7% | +$43.6M |
|
27
CALL
Netflix
NFLX
$286B
| $372M | 0.42% |
15,792,000
+1,665,000
| +12% | +$37M |
|
28
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $337M | 0.38% |
7,705,700
+2,212,400
| +40% | +$55.9M |
|
29
CALL
Alibaba
BABA
$283B
| $326M | 0.37% |
4,078,000
+347,000
| +9% | +$33.1M |
|
30
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $301M | 0.34% |
4,512,200
-1,675,100
| -27% | -$105M |
|
31
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $301M | 0.34% |
1,046,300
-145,800
| -12% | -$46.3M |
|
|
32
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $283M | 0.32% |
5,803,700
+723,900
| +14% | +$18.3M |
|
33
CALL
PayPal
PYPL
$49.3B
| $274M | 0.31% |
3,180,900
-261,100
| -8% | -$23.2M |
|
|
34
PUT
Alibaba
BABA
$283B
| $264M | 0.3% |
3,305,100
+867,600
| +36% | +$82.7M |
|
|
35
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $249M | 0.28% |
866,000
+112,000
| +15% | +$35.6M |
|
36
CALL
Advanced Micro Devices
AMD
$888B
| $247M | 0.28% |
3,897,800
-1,007,400
| -21% | -$85.8M |
|
|
TWTR
37
CALL
DELISTED
Twitter, Inc.
TWTR
| $245M | 0.28% |
5,589,600
+717,500
| +15% | +$29.2M |
|
|
38
PUT
Advanced Micro Devices
AMD
$888B
| $223M | 0.25% |
3,517,200
-816,900
| -19% | -$69.6M |
|
39
CALL
Walt Disney
DIS
$167B
| $219M | 0.25% |
2,325,900
+231,400
| +11% | +$24.8M |
|
40
CALL
ExxonMobil
XOM
$629B
| $211M | 0.24% |
2,422,900
-146,500
| -6% | -$13.4M |
|
|
41
PUT
Citigroup
C
$223B
| $210M | 0.24% |
5,045,700
+1,683,400
| +50% | +$83.2M |
|
|
TWTR
42
PUT
DELISTED
Twitter, Inc.
TWTR
| $210M | 0.24% |
4,791,100
+1,023,100
| +27% | +$41.6M |
|
43
PUT
JPMorgan Chase
JPM
$918B
| $201M | 0.23% |
1,925,400
-106,600
| -5% | -$12.2M |
|
|
44
PUT
PayPal
PYPL
$49.3B
| $199M | 0.23% |
2,314,000
+374,600
| +19% | +$33.2M |
|
45
CALL
UnitedHealth
UNH
$396B
| $183M | 0.21% |
369,500
+240,300
| +186% | +$126M |
|
|
46
PUT
Vanguard S&P 500 ETF
VOO
$981B
| $182M | 0.21% |
895,300
-55,900
| -6% | -$20.4M |
|
47
PUT
Salesforce
CRM
$139B
| $179M | 0.2% |
1,244,100
+323,500
| +35% | +$54.9M |
|
|
48
CALL
JPMorgan Chase
JPM
$918B
| $169M | 0.19% |
1,632,300
+248,700
| +18% | +$28.5M |
|
49
PUT
Micron Technology
MU
$1.1T
| $167M | 0.19% |
3,334,600
+547,600
| +20% | +$31.8M |
|
|
50
CALL
Intel
INTC
$530B
| $167M | 0.19% |
6,475,900
+1,901,800
| +42% | +$64.8M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.