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 | |
|---|---|---|---|---|---|---|
726
CALL
Coupang
CPNG
$28.1B
| $11.8M | 0.01% |
707,800
+24,100
| +4% | +$417K |
|
727
CALL
Humana
HUM
$47.4B
| $11.8M | 0.01% |
24,300
+5,200
| +27% | +$2.53M |
|
728
PUT
Teck Resources
TECK
$29.4B
| $11.8M | 0.01% |
387,500
-209,200
| -35% | -$6.46M |
|
729
CALL
United States Natural Gas Fund
UNG
$473M
| $11.8M | 0.01% |
125,750
-73,700
| -37% | -$8.08M |
|
730
PUT
Archer Daniels Midland
ADM
$41.6B
| $11.7M | 0.01% |
146,000
-26,100
| -15% | -$2.15M |
|
731
GSK
GSK
$102B
| $11.7M | 0.01% |
398,118
+275,509
| +225% | +$10.4M |
|
732
CALL
Franco-Nevada
FNV
$41.3B
| $11.7M | 0.01% |
97,800
+3,200
| +3% | +$402K |
|
733
PUT
Dell
DELL
$284B
| $11.6M | 0.01% |
343,700
+200,800
| +141% | +$8.45M |
|
734
PUT
Robinhood
HOOD
$91.2B
| $11.6M | 0.01% |
1,145,600
-1,104,100
| -49% | -$10.6M |
|
735
PUT
Macy's
M
$6.14B
| $11.6M | 0.01% |
737,800
+57,600
| +8% | +$1.02M |
|
736
First Solar
FSLR
$22.1B
| $11.6M | 0.01% |
+87,335
| New | +$9.36M |
|
737
CALL
Enbridge
ENB
$123B
| $11.5M | 0.01% |
310,700
-90,400
| -23% | -$3.81M |
|
738
PUT
Western Digital
WDC
$192B
| $11.5M | 0.01% |
468,474
+41,410
| +10% | +$1.37M |
|
739
CALL
Constellation Brands
STZ
$22.1B
| $11.5M | 0.01% |
50,100
-28,400
| -36% | -$6.92M |
|
740
PUT
Teladoc Health
TDOC
$1.56B
| $11.5M | 0.01% |
453,700
-96,500
| -18% | -$3.39M |
|
741
CALL
Toyota
TM
$209B
| $11.5M | 0.01% |
88,200
+17,700
| +25% | +$2.68M |
|
742
CALL
Sunrun
RUN
$2.48B
| $11.5M | 0.01% |
415,400
-111,700
| -21% | -$3.47M |
|
743
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.24B
| $11.5M | 0.01% |
130,355
+9,018
| +7% | +$840K |
|
744
PUT
Dutch Bros
BROS
$8.78B
| $11.4M | 0.01% |
366,200
+225,500
| +160% | +$8.49M |
|
745
PUT
Wayfair
W
$10.9B
| $11.4M | 0.01% |
349,400
+7,900
| +2% | +$417K |
|
746
PUT
SoFi Technologies
SOFI
$21.4B
| $11.4M | 0.01% |
2,328,200
+337,000
| +17% | +$2.13M |
|
747
CALL
Carvana
CVNA
$43.1B
| $11.3M | 0.01% |
2,795,000
+82,500
| +3% | +$538K |
|
748
CALL
Cardinal Health
CAH
$52.9B
| $11.3M | 0.01% |
169,800
+110,100
| +184% | +$6.98M |
|
749
PUT
Fidelity National Information Services
FIS
$20.7B
| $11.3M | 0.01% |
149,800
-55,400
| -27% | -$5.16M |
|
750
PUT
Post Holdings
POST
$4.09B
| $11.2M | 0.01% |
138,000
+68,100
| +97% | +$5.89M |
|
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.