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 | |
|---|---|---|---|---|---|---|
101
CALL
Merck
MRK
$312B
| $107M | 0.12% |
1,348,900
+170,800
| +14% | +$15.2M |
|
102
CALL
Starbucks
SBUX
$119B
| $107M | 0.12% |
1,269,600
-18,700
| -1% | -$1.59M |
|
103
PUT
Cisco
CSCO
$442B
| $106M | 0.12% |
2,659,100
+3,900
| +0.1% | +$173K |
|
104
CALL
Biogen
BIIB
$29.5B
| $105M | 0.12% |
394,400
+157,400
| +66% | +$33.4M |
|
105
CALL
Johnson & Johnson
JNJ
$599B
| $105M | 0.12% |
643,400
+43,300
| +7% | +$7.33M |
|
106
CALL
Ford
F
$56.9B
| $105M | 0.12% |
9,359,600
+2,820,600
| +43% | +$39.5M |
|
107
PUT
Morgan Stanley
MS
$340B
| $104M | 0.12% |
1,315,500
-100,600
| -7% | -$8.48M |
|
108
CALL
Mastercard
MA
$476B
| $104M | 0.12% |
365,500
+88,100
| +32% | +$29.2M |
|
109
PUT
Wells Fargo
WFC
$266B
| $103M | 0.12% |
2,552,400
-81,700
| -3% | -$3.51M |
|
110
PUT
ARK Space & Defense Innovation ETF
ARKX
$823M
| $103M | 0.12% |
2,772,700
-39,300
| -1% | -$560K |
|
|
XYZ
111
PUT
Block Inc
XYZ
$47.8B
| $103M | 0.12% |
1,865,100
+105,800
| +6% | +$7.49M |
|
112
PUT
Coca-Cola
KO
$353B
| $102M | 0.12% |
1,828,200
+370,800
| +25% | +$23M |
|
|
113
PUT
Intel
INTC
$530B
| $102M | 0.12% |
3,969,900
+214,700
| +6% | +$7.32M |
|
|
114
PUT
Pfizer
PFE
$142B
| $102M | 0.12% |
2,417,100
-245,500
| -9% | -$11.9M |
|
|
115
Microsoft
MSFT
$2.95T
| $101M | 0.11% |
+432,062
| New | +$114M |
|
116
CALL
Uber
UBER
$146B
| $100M | 0.11% |
3,778,800
+196,500
| +5% | +$5.43M |
|
117
CALL
Enphase Energy
ENPH
$5.26B
| $99.8M | 0.11% |
359,500
+63,500
| +21% | +$17.1M |
|
|
118
PUT
Johnson & Johnson
JNJ
$599B
| $99M | 0.11% |
606,300
+132,700
| +28% | +$22.5M |
|
119
CALL
Lockheed Martin
LMT
$117B
| $98.5M | 0.11% |
254,900
+67,000
| +36% | +$28M |
|
|
120
PUT
Mastercard
MA
$476B
| $97.3M | 0.11% |
342,300
+5,700
| +2% | +$1.89M |
|
121
PUT
Deere & Co
DE
$158B
| $96.7M | 0.11% |
289,500
+87,000
| +43% | +$29.8M |
|
|
122
PUT
Lockheed Martin
LMT
$117B
| $96.6M | 0.11% |
250,100
+91,800
| +58% | +$38.3M |
|
|
123
PUT
Ford
F
$56.9B
| $96.5M | 0.11% |
8,620,500
-1,183,900
| -12% | -$16.6M |
|
124
PUT
Airbnb
ABNB
$86B
| $96.1M | 0.11% |
914,900
+60,700
| +7% | +$6.73M |
|
|
125
CALL
ARK Space & Defense Innovation ETF
ARKX
$823M
| $94.8M | 0.11% |
2,681,000
-344,300
| -11% | -$4.9M |
|
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.